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Conserved domains on  [gi|1789691051|ref|NP_001364252|]
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nebulette isoform 5 [Homo sapiens]

Protein Classification

Graphical summary

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List of domain hits

Name Accession Description Interval E-value
SH3_Nebulette_C cd11935
C-terminal Src Homology 3 domain of Nebulette and LIM-nebulette (or Lasp2); Nebulette is a ...
197-254 1.83e-39

C-terminal Src Homology 3 domain of Nebulette and LIM-nebulette (or Lasp2); Nebulette is a cardiac-specific protein that localizes to the Z-disc. It interacts with tropomyosin and is important in stabilizing actin thin filaments in cardiac muscles. Polymorphisms in the nebulette gene are associated with dilated cardiomyopathy, with some mutations resulting in severe heart failure. Nebulette is a 107kD protein that contains an N-terminal acidic region, multiple nebulin repeats, and a C-terminal SH3 domain. LIM-nebulette, also called Lasp2 (LIM and SH3 domain protein 2), is an alternatively spliced variant of nebulette. Although it shares a gene with nebulette, Lasp2 is not transcribed from a muscle-specific promoter, giving rise to its multiple tissue expression pattern with highest amounts in the brain. It can crosslink actin filaments and it affects cell spreading. Lasp2 is a 34kD protein containing an N-terminal LIM domain, three nebulin repeats, and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


:

Pssm-ID: 212868 [Multi-domain]  Cd Length: 58  Bit Score: 130.89  E-value: 1.83e-39
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....*...
gi 1789691051 197 RTYRAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQRTGRTGMLPANYIEFVN 254
Cdd:cd11935     1 RTYRAMYDYSAQDEDEVSFRDGDYIVNVQPIDEGWMYGTVQRTGRTGMLPANYIEFVN 58
LIM super family cl02475
LIM is a small protein-protein interaction domain, containing two zinc fingers; LIM domains ...
8-41 1.20e-22

LIM is a small protein-protein interaction domain, containing two zinc fingers; LIM domains are identified in a diverse group of proteins with wide variety of biological functions, including gene expression regulation, cell fate determination, cytoskeleton organization, tumor formation and development. LIM domains function as adaptors or scaffolds to support the assembly of multimeric protein complexes. They perform their functions through interactions with other protein partners. LIM domains are 50-60 amino acids in size and share two characteristic highly conserved zinc finger motifs. The two zinc fingers contain eight conserved residues, mostly cysteines and histidines, which coordinately bond to two zinc atoms. The consensus sequence of LIM domain has been defined as C-x(2)-C-x(16,23)-H-x(2)-[CH]-x(2)-C-x(2)-C-x(16,21)-C-x(2,3)-[CHD] (where X denotes any amino acid).


The actual alignment was detected with superfamily member cd09447:

Pssm-ID: 413332  Cd Length: 53  Bit Score: 87.43  E-value: 1.20e-22
                          10        20        30
                  ....*....|....*....|....*....|....
gi 1789691051   8 YWHKGCFHCEVCKMALNMNNYKGYEKKPYCNAHY 41
Cdd:cd09447    20 IWHKGCFKCEVCGMTLNMKNYKGYNKKPYCNAHY 53
NEBU smart00227
The Nebulin repeat is present also in Las1; Tandem arrays of these repeats are known to bind ...
82-112 9.36e-08

The Nebulin repeat is present also in Las1; Tandem arrays of these repeats are known to bind actin.


:

Pssm-ID: 128523  Cd Length: 31  Bit Score: 47.08  E-value: 9.36e-08
                           10        20        30
                   ....*....|....*....|....*....|.
gi 1789691051   82 FSIVTDTPELQRLKRTQEQISNVKYHEDFEK 112
Cdd:smart00227   1 YTSVPDTPEILLAKKNQKLISDVKYKEDYEK 31
Nebulin pfam00880
Nebulin repeat;
51-78 5.70e-07

Nebulin repeat;


:

Pssm-ID: 459977  Cd Length: 28  Bit Score: 44.69  E-value: 5.70e-07
                          10        20
                  ....*....|....*....|....*...
gi 1789691051  51 DTPENLRLKQQSELQSQVKYKRDFEESK 78
Cdd:pfam00880   1 DTPEIVHAKKNAKLQSDVKYKEDYEKEK 28
NEBU smart00227
The Nebulin repeat is present also in Las1; Tandem arrays of these repeats are known to bind ...
118-143 8.23e-03

The Nebulin repeat is present also in Las1; Tandem arrays of these repeats are known to bind actin.


:

Pssm-ID: 128523  Cd Length: 31  Bit Score: 33.21  E-value: 8.23e-03
                           10        20
                   ....*....|....*....|....*.
gi 1789691051  118 FTPVVDDPVTERVRKNTQVVSDAAYK 143
Cdd:smart00227   1 YTSVPDTPEILLAKKNQKLISDVKYK 26
 
Name Accession Description Interval E-value
SH3_Nebulette_C cd11935
C-terminal Src Homology 3 domain of Nebulette and LIM-nebulette (or Lasp2); Nebulette is a ...
197-254 1.83e-39

C-terminal Src Homology 3 domain of Nebulette and LIM-nebulette (or Lasp2); Nebulette is a cardiac-specific protein that localizes to the Z-disc. It interacts with tropomyosin and is important in stabilizing actin thin filaments in cardiac muscles. Polymorphisms in the nebulette gene are associated with dilated cardiomyopathy, with some mutations resulting in severe heart failure. Nebulette is a 107kD protein that contains an N-terminal acidic region, multiple nebulin repeats, and a C-terminal SH3 domain. LIM-nebulette, also called Lasp2 (LIM and SH3 domain protein 2), is an alternatively spliced variant of nebulette. Although it shares a gene with nebulette, Lasp2 is not transcribed from a muscle-specific promoter, giving rise to its multiple tissue expression pattern with highest amounts in the brain. It can crosslink actin filaments and it affects cell spreading. Lasp2 is a 34kD protein containing an N-terminal LIM domain, three nebulin repeats, and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212868 [Multi-domain]  Cd Length: 58  Bit Score: 130.89  E-value: 1.83e-39
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....*...
gi 1789691051 197 RTYRAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQRTGRTGMLPANYIEFVN 254
Cdd:cd11935     1 RTYRAMYDYSAQDEDEVSFRDGDYIVNVQPIDEGWMYGTVQRTGRTGMLPANYIEFVN 58
LIM_LASP cd09447
The LIM domain of LIM and SH3 Protein (LASP); The LIM domain of LIM and SH3 Protein (LASP): ...
8-41 1.20e-22

The LIM domain of LIM and SH3 Protein (LASP); The LIM domain of LIM and SH3 Protein (LASP): LASP family contains two highly homologous members, LASP-1 and LASP-2. LASP contains a LIM motif at its amino terminus, a src homology 3 (SH3) domains at its C-terminal part, and a nebulin-like region in the middle. LASP-1 and -2 are highly conserved in their LIM, nebulin-like, and SH3 domains ,but differ significantly at their linker regions. Both proteins are ubiquitously expressed and involved in cytoskeletal architecture, especially in the organization of focal adhesions. LASP-1 and LASP-2, are important during early embryo- and fetogenesis and are highly expressed in the central nervous system of the adult. However, only LASP-1 seems to participate significantly in neuronal differentiation and plays an important functional role in migration and proliferation of certain cancer cells while the role of LASP-2 is more structural. The expression of LASP-1 in breast tumors is increased significantly. As in other LIM domains, this domain family is 50-60 amino acids in size and shares two characteristic zinc finger motifs. The two zinc fingers contain eight conserved residues, mostly cysteines and histidines, which coordinately bond to two zinc atoms. LIM domains function as adaptors or scaffolds to support the assembly of multimeric protein.


Pssm-ID: 188831  Cd Length: 53  Bit Score: 87.43  E-value: 1.20e-22
                          10        20        30
                  ....*....|....*....|....*....|....
gi 1789691051   8 YWHKGCFHCEVCKMALNMNNYKGYEKKPYCNAHY 41
Cdd:cd09447    20 IWHKGCFKCEVCGMTLNMKNYKGYNKKPYCNAHY 53
SH3 smart00326
Src homology 3 domains; Src homology 3 (SH3) domains bind to target proteins through sequences ...
197-251 2.00e-17

Src homology 3 domains; Src homology 3 (SH3) domains bind to target proteins through sequences containing proline and hydrophobic amino acids. Pro-containing polypeptides may bind to SH3 domains in 2 different binding orientations.


Pssm-ID: 214620 [Multi-domain]  Cd Length: 56  Bit Score: 73.73  E-value: 2.00e-17
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*
gi 1789691051  197 RTYRAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQRtGRTGMLPANYIE 251
Cdd:smart00326   3 PQVRALYDYTAQDPDELSFKKGDIITVLEKSDDGWWKGRLGR-GKEGLFPSNYVE 56
SH3_9 pfam14604
Variant SH3 domain;
201-251 1.29e-15

Variant SH3 domain;


Pssm-ID: 434066 [Multi-domain]  Cd Length: 49  Bit Score: 68.80  E-value: 1.29e-15
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|.
gi 1789691051 201 AMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGtvQRTGRTGMLPANYIE 251
Cdd:pfam14604   1 ALYPYEPKDDDELSLQRGDVITVIEESEDGWWEG--INTGRTGLVPANYVE 49
NEBU smart00227
The Nebulin repeat is present also in Las1; Tandem arrays of these repeats are known to bind ...
82-112 9.36e-08

The Nebulin repeat is present also in Las1; Tandem arrays of these repeats are known to bind actin.


Pssm-ID: 128523  Cd Length: 31  Bit Score: 47.08  E-value: 9.36e-08
                           10        20        30
                   ....*....|....*....|....*....|.
gi 1789691051   82 FSIVTDTPELQRLKRTQEQISNVKYHEDFEK 112
Cdd:smart00227   1 YTSVPDTPEILLAKKNQKLISDVKYKEDYEK 31
Nebulin pfam00880
Nebulin repeat;
87-114 1.02e-07

Nebulin repeat;


Pssm-ID: 459977  Cd Length: 28  Bit Score: 47.00  E-value: 1.02e-07
                          10        20
                  ....*....|....*....|....*...
gi 1789691051  87 DTPELQRLKRTQEQISNVKYHEDFEKTK 114
Cdd:pfam00880   1 DTPEIVHAKKNAKLQSDVKYKEDYEKEK 28
Nebulin pfam00880
Nebulin repeat;
51-78 5.70e-07

Nebulin repeat;


Pssm-ID: 459977  Cd Length: 28  Bit Score: 44.69  E-value: 5.70e-07
                          10        20
                  ....*....|....*....|....*...
gi 1789691051  51 DTPENLRLKQQSELQSQVKYKRDFEESK 78
Cdd:pfam00880   1 DTPEIVHAKKNAKLQSDVKYKEDYEKEK 28
LIM smart00132
Zinc-binding domain present in Lin-11, Isl-1, Mec-3; Zinc-binding domain family. Some LIM ...
8-40 1.17e-06

Zinc-binding domain present in Lin-11, Isl-1, Mec-3; Zinc-binding domain family. Some LIM domains bind protein partners via tyrosine-containing motifs. LIM domains are found in many key regulators of developmental pathways.


Pssm-ID: 214528 [Multi-domain]  Cd Length: 54  Bit Score: 44.68  E-value: 1.17e-06
                           10        20        30
                   ....*....|....*....|....*....|...
gi 1789691051    8 YWHKGCFHCEVCKMALNMNNYKGYEKKPYCNAH 40
Cdd:smart00132  22 VWHPECFKCATCGKPLSGDTFFEKDGKLYCKDC 54
NEBU smart00227
The Nebulin repeat is present also in Las1; Tandem arrays of these repeats are known to bind ...
46-76 2.33e-06

The Nebulin repeat is present also in Las1; Tandem arrays of these repeats are known to bind actin.


Pssm-ID: 128523  Cd Length: 31  Bit Score: 43.22  E-value: 2.33e-06
                           10        20        30
                   ....*....|....*....|....*....|.
gi 1789691051   46 FTTVADTPENLRLKQQSELQSQVKYKRDFEE 76
Cdd:smart00227   1 YTSVPDTPEILLAKKNQKLISDVKYKEDYEK 31
LIM pfam00412
LIM domain; This family represents two copies of the LIM structural domain.
8-41 1.45e-04

LIM domain; This family represents two copies of the LIM structural domain.


Pssm-ID: 395333 [Multi-domain]  Cd Length: 57  Bit Score: 38.85  E-value: 1.45e-04
                          10        20        30
                  ....*....|....*....|....*....|....
gi 1789691051   8 YWHKGCFHCEVCKMALNMNNYKGYEKKPYCNAHY 41
Cdd:pfam00412  20 VWHPECFRCAVCGKPLTTGDFYEKDGKLYCKHDY 53
NEBU smart00227
The Nebulin repeat is present also in Las1; Tandem arrays of these repeats are known to bind ...
118-143 8.23e-03

The Nebulin repeat is present also in Las1; Tandem arrays of these repeats are known to bind actin.


Pssm-ID: 128523  Cd Length: 31  Bit Score: 33.21  E-value: 8.23e-03
                           10        20
                   ....*....|....*....|....*.
gi 1789691051  118 FTPVVDDPVTERVRKNTQVVSDAAYK 143
Cdd:smart00227   1 YTSVPDTPEILLAKKNQKLISDVKYK 26
 
Name Accession Description Interval E-value
SH3_Nebulette_C cd11935
C-terminal Src Homology 3 domain of Nebulette and LIM-nebulette (or Lasp2); Nebulette is a ...
197-254 1.83e-39

C-terminal Src Homology 3 domain of Nebulette and LIM-nebulette (or Lasp2); Nebulette is a cardiac-specific protein that localizes to the Z-disc. It interacts with tropomyosin and is important in stabilizing actin thin filaments in cardiac muscles. Polymorphisms in the nebulette gene are associated with dilated cardiomyopathy, with some mutations resulting in severe heart failure. Nebulette is a 107kD protein that contains an N-terminal acidic region, multiple nebulin repeats, and a C-terminal SH3 domain. LIM-nebulette, also called Lasp2 (LIM and SH3 domain protein 2), is an alternatively spliced variant of nebulette. Although it shares a gene with nebulette, Lasp2 is not transcribed from a muscle-specific promoter, giving rise to its multiple tissue expression pattern with highest amounts in the brain. It can crosslink actin filaments and it affects cell spreading. Lasp2 is a 34kD protein containing an N-terminal LIM domain, three nebulin repeats, and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212868 [Multi-domain]  Cd Length: 58  Bit Score: 130.89  E-value: 1.83e-39
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....*...
gi 1789691051 197 RTYRAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQRTGRTGMLPANYIEFVN 254
Cdd:cd11935     1 RTYRAMYDYSAQDEDEVSFRDGDYIVNVQPIDEGWMYGTVQRTGRTGMLPANYIEFVN 58
SH3_Nebulin_family_C cd11789
C-terminal Src Homology 3 domain of the Nebulin family of proteins; Nebulin family proteins ...
198-251 2.38e-36

C-terminal Src Homology 3 domain of the Nebulin family of proteins; Nebulin family proteins contain multiple nebulin repeats, and may contain an N-terminal LIM domain and/or a C-terminal SH3 domain. They have molecular weights ranging from 34 to 900 kD, depending on the number of nebulin repeats, and they all bind actin. They are involved in the regulation of actin filament architecture and function as stabilizers and scaffolds for cytoskeletal structures with which they associate, such as long actin filaments or focal adhesions. Nebulin family proteins that contain a C-terminal SH3 domain include the giant filamentous protein nebulin, nebulette, Lasp1, and Lasp2. Lasp2, also called LIM-nebulette, is an alternatively spliced variant of nebulette. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212723 [Multi-domain]  Cd Length: 55  Bit Score: 122.81  E-value: 2.38e-36
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....
gi 1789691051 198 TYRAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQRTGRTGMLPANYIE 251
Cdd:cd11789     1 RYRAMYDYAAADDDEVSFQEGDVIINVEIIDDGWMEGTVQRTGQSGMLPANYVE 54
SH3_Nebulin_C cd11933
C-terminal Src Homology 3 domain of Nebulin; Nebulin is a giant filamentous protein (600-900 ...
197-251 3.45e-33

C-terminal Src Homology 3 domain of Nebulin; Nebulin is a giant filamentous protein (600-900 kD) that is expressed abundantly in skeletal muscle. It binds to actin thin filaments and regulates its assembly and function. Nebulin was thought to be part of a molecular ruler complex that is critical in determining the lengths of actin thin filaments in skeletal muscle since its length, which varies due to alternative splicing, correlates with the length of thin filaments in various muscle types. Recent studies indicate that nebulin regulates thin filament length by stabilizing the filaments and preventing depolymerization. Mutations in nebulin can cause nemaline myopathy, characterized by muscle weakness which can be severe and can lead to neonatal lethality. Nebulin contains an N-terminal LIM domain, many nebulin repeats/super repeats, and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212866 [Multi-domain]  Cd Length: 58  Bit Score: 115.10  E-value: 3.45e-33
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....*
gi 1789691051 197 RTYRAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQRTGRTGMLPANYIE 251
Cdd:cd11933     2 KSFRAMYDYRAADDDEVSFKDGDTIVNVQTIDEGWMYGTVQRTGKTGMLPANYVE 56
SH3_Lasp1_C cd11934
C-terminal Src Homology 3 domain of LIM and SH3 domain protein 1; Lasp1 is a cytoplasmic ...
197-251 2.11e-32

C-terminal Src Homology 3 domain of LIM and SH3 domain protein 1; Lasp1 is a cytoplasmic protein that binds focal adhesion proteins and is involved in cell signaling, migration, and proliferation. It is overexpressed in several cancer cells including breast, ovarian, bladder, and liver. In cancer cells, it can be found in the nucleus; its degree of nuclear localization correlates with tumor size and poor prognosis. Lasp1 is a 36kD protein containing an N-terminal LIM domain, two nebulin repeats, and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212867 [Multi-domain]  Cd Length: 59  Bit Score: 112.78  E-value: 2.11e-32
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....*
gi 1789691051 197 RTYRAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQRTGRTGMLPANYIE 251
Cdd:cd11934     3 KRYRAVYDYNAADEDEVSFQDGDTIVNVQQIDDGWMYGTVERTGDTGMLPANYVE 57
LIM_LASP cd09447
The LIM domain of LIM and SH3 Protein (LASP); The LIM domain of LIM and SH3 Protein (LASP): ...
8-41 1.20e-22

The LIM domain of LIM and SH3 Protein (LASP); The LIM domain of LIM and SH3 Protein (LASP): LASP family contains two highly homologous members, LASP-1 and LASP-2. LASP contains a LIM motif at its amino terminus, a src homology 3 (SH3) domains at its C-terminal part, and a nebulin-like region in the middle. LASP-1 and -2 are highly conserved in their LIM, nebulin-like, and SH3 domains ,but differ significantly at their linker regions. Both proteins are ubiquitously expressed and involved in cytoskeletal architecture, especially in the organization of focal adhesions. LASP-1 and LASP-2, are important during early embryo- and fetogenesis and are highly expressed in the central nervous system of the adult. However, only LASP-1 seems to participate significantly in neuronal differentiation and plays an important functional role in migration and proliferation of certain cancer cells while the role of LASP-2 is more structural. The expression of LASP-1 in breast tumors is increased significantly. As in other LIM domains, this domain family is 50-60 amino acids in size and shares two characteristic zinc finger motifs. The two zinc fingers contain eight conserved residues, mostly cysteines and histidines, which coordinately bond to two zinc atoms. LIM domains function as adaptors or scaffolds to support the assembly of multimeric protein.


Pssm-ID: 188831  Cd Length: 53  Bit Score: 87.43  E-value: 1.20e-22
                          10        20        30
                  ....*....|....*....|....*....|....
gi 1789691051   8 YWHKGCFHCEVCKMALNMNNYKGYEKKPYCNAHY 41
Cdd:cd09447    20 IWHKGCFKCEVCGMTLNMKNYKGYNKKPYCNAHY 53
LIM_LASP_like cd09359
The LIM domain of LIM and SH3 Protein (LASP)-like proteins; The LIM domain of LIM and SH3 ...
8-41 2.60e-21

The LIM domain of LIM and SH3 Protein (LASP)-like proteins; The LIM domain of LIM and SH3 Protein (LASP) like proteins: This family contains two types of LIM containing proteins; LASP and N-RAP. LASP family contains two highly homologous members, LASP-1 and LASP-2. LASP contains a LIM motif at its amino terminus, a src homology 3 (SH3) domains at its C-terminal part, and a nebulin-like region in the middle. LASP-1 and -2 are highly conserved in their LIM, nebulin-like, and SH3 domains, but differ significantly at their linker regions. Both proteins are ubiquitously expressed and involved in cytoskeletal architecture, especially in the organization of focal adhesions. LASP-1 and LASP-2, are important during early embryo- and fetogenesis and are highly expressed in the central nervous system of the adult. However, only LASP-1 seems to participate significantly in neuronal differentiation and plays an important functional role in migration and proliferation of certain cancer cells while the role of LASP-2 is more structural. The expression of LASP-1 in breast tumors is increased significantly. N-RAP is a muscle-specific protein concentrated at myotendinous junctions in skeletal muscle and intercalated disks in cardiac muscle. LIM domain is found at the N-terminus of N-RAP and the C-terminal of N-RAP contains a region with multiple of nebulin repeats. N-RAP functions as a scaffolding protein that organizes alpha-actinin and actin into symmetrical I-Z-I structures in developing myofibrils. Nebulin repeat is known as actin binding domain. The N-RAP is hypothesized to form antiparallel dimerization via its LIM domain. As in other LIM domains, this domain family is 50-60 amino acids in size and shares two characteristic zinc finger motifs. The two zinc fingers contain eight conserved residues, mostly cysteines and histidines, which coordinately bond to two zinc atoms. LIM domains function as adaptors or scaffolds to support the assembly of multimeric protein.


Pssm-ID: 188745  Cd Length: 53  Bit Score: 83.86  E-value: 2.60e-21
                          10        20        30
                  ....*....|....*....|....*....|....
gi 1789691051   8 YWHKGCFHCEVCKMALNMNNYKGYEKKPYCNAHY 41
Cdd:cd09359    20 TWHKACFHCEVCKMTLNMNNYKGYQKKPYCNAHY 53
SH3 smart00326
Src homology 3 domains; Src homology 3 (SH3) domains bind to target proteins through sequences ...
197-251 2.00e-17

Src homology 3 domains; Src homology 3 (SH3) domains bind to target proteins through sequences containing proline and hydrophobic amino acids. Pro-containing polypeptides may bind to SH3 domains in 2 different binding orientations.


Pssm-ID: 214620 [Multi-domain]  Cd Length: 56  Bit Score: 73.73  E-value: 2.00e-17
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*
gi 1789691051  197 RTYRAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQRtGRTGMLPANYIE 251
Cdd:smart00326   3 PQVRALYDYTAQDPDELSFKKGDIITVLEKSDDGWWKGRLGR-GKEGLFPSNYVE 56
SH3_Cortactin_like cd11819
Src homology 3 domain of Cortactin and related proteins; This subfamily includes cortactin, ...
200-251 4.86e-17

Src homology 3 domain of Cortactin and related proteins; This subfamily includes cortactin, Abp1 (actin-binding protein 1), hematopoietic lineage cell-specific protein 1 (HS1), and similar proteins. These proteins are involved in regulating actin dynamics through direct or indirect interaction with the Arp2/3 complex, which is required to initiate actin polymerization. They all contain at least one C-terminal SH3 domain. Cortactin and HS1 bind Arp2/3 and actin through an N-terminal region that contains an acidic domain and several copies of a repeat domain found in cortactin and HS1. Abp1 binds actin via an N-terminal actin-depolymerizing factor (ADF) homology domain. Yeast Abp1 binds Arp2/3 directly through two acidic domains. Mammalian Abp1 does not directly interact with Arp2/3; instead, it regulates actin dynamics indirectly by interacting with dynamin and WASP family proteins. The C-terminal region of these proteins acts as an adaptor or scaffold that can connect membrane trafficking and signaling proteins that bind the SH3 domain within the actin network. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212753 [Multi-domain]  Cd Length: 54  Bit Score: 72.73  E-value: 4.86e-17
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|..
gi 1789691051 200 RAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGtVQRTGRTGMLPANYIE 251
Cdd:cd11819     3 KALYDYQAAEDNEISFVEGDIITQIEQIDEGWWLG-VNAKGQKGLFPANYVE 53
SH3_Abp1_eu cd11960
Src homology 3 domain of eumetazoan Actin-binding protein 1; Abp1, also called drebrin-like ...
200-251 2.59e-16

Src homology 3 domain of eumetazoan Actin-binding protein 1; Abp1, also called drebrin-like protein, is an adaptor protein that functions in receptor-mediated endocytosis and vesicle trafficking. It contains an N-terminal actin-binding module, the actin-depolymerizing factor (ADF) homology domain, a helical domain, and a C-terminal SH3 domain. Mammalian Abp1, unlike yeast Abp1, does not contain an acidic domain that interacts with the Arp2/3 complex. It regulates actin dynamics indirectly by interacting with dynamin and WASP family proteins. Abp1 deficiency causes abnormal organ structure and function of the spleen, heart, and lung of mice. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212893 [Multi-domain]  Cd Length: 54  Bit Score: 70.89  E-value: 2.59e-16
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gi 1789691051 200 RAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQrTGRTGMLPANYIE 251
Cdd:cd11960     3 RALYDYQAADDTEISFDPGDIITDIEQIDEGWWRGTGP-DGTYGLFPANYVE 53
SH3 cd00174
Src Homology 3 domain superfamily; Src Homology 3 (SH3) domains are protein interaction ...
198-249 6.07e-16

Src Homology 3 domain superfamily; Src Homology 3 (SH3) domains are protein interaction domains that bind proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. Thus, they are referred to as proline-recognition domains (PRDs). SH3 domains are less selective and show more diverse specificity compared to other PRDs. They have been shown to bind peptide sequences that lack the PxxP motif; examples include the PxxDY motif of Eps8 and the RKxxYxxY sequence in SKAP55. SH3 domain containing proteins play versatile and diverse roles in the cell, including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies, among others. Many members of this superfamily are adaptor proteins that associate with a number of protein partners, facilitating complex formation and signal transduction.


Pssm-ID: 212690 [Multi-domain]  Cd Length: 51  Bit Score: 69.80  E-value: 6.07e-16
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gi 1789691051 198 TYRAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQRtGRTGMLPANY 249
Cdd:cd00174     1 YARALYDYEAQDDDELSFKKGDIITVLEKDDDGWWEGELNG-GREGLFPANY 51
SH3_GRAF-like cd11882
Src Homology 3 domain of GTPase Regulator Associated with Focal adhesion kinase and similar ...
200-252 7.43e-16

Src Homology 3 domain of GTPase Regulator Associated with Focal adhesion kinase and similar proteins; This subfamily is composed of Rho GTPase activating proteins (GAPs) with similarity to GRAF. Members contain an N-terminal BAR domain, followed by a Pleckstrin homology (PH) domain, a Rho GAP domain, and a C-terminal SH3 domain. Although vertebrates harbor four Rho GAPs in the GRAF subfamily including GRAF, GRAF2, GRAF3, and Oligophrenin-1 (OPHN1), only three are included in this model. OPHN1 contains the BAR, PH and GAP domains, but not the C-terminal SH3 domain. GRAF and GRAF2 show GAP activity towards RhoA and Cdc42. GRAF influences Rho-mediated cytoskeletal rearrangements and binds focal adhesion kinase. GRAF2 regulates caspase-activated p21-activated protein kinase-2. The SH3 domain of GRAF and GRAF2 binds PKNbeta, a target of the small GTPase Rho. SH3 domains bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs; they play a role in the regulation of enzymes by intramolecular interactions, changing the subcellular localization of signal pathway components and mediate multiprotein complex assemblies.


Pssm-ID: 212815 [Multi-domain]  Cd Length: 54  Bit Score: 69.63  E-value: 7.43e-16
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gi 1789691051 200 RAMYDYSAQDEDEVSFRDGDYIVNVQPID-DGWMYGTVQrtGRTGMLPANYIEF 252
Cdd:cd11882     3 RALYACKAEDESELSFEPGQIITNVQPSDePGWLEGTLN--GRTGLIPENYVEF 54
SH3_UBASH3 cd11791
Src homology 3 domain of Ubiquitin-associated and SH3 domain-containing proteins, also called ...
198-252 1.06e-15

Src homology 3 domain of Ubiquitin-associated and SH3 domain-containing proteins, also called TULA (T cell Ubiquitin LigAnd) family of proteins; UBASH3 or TULA proteins are also referred to as Suppressor of T cell receptor Signaling (STS) proteins. They contain an N-terminal UBA domain, a central SH3 domain, and a C-terminal histidine phosphatase domain. They bind c-Cbl through the SH3 domain and to ubiquitin via UBA. In some vertebrates, there are two TULA family proteins, called UBASH3A (also called TULA or STS-2) and UBASH3B (also called TULA-2 or STS-1), which show partly overlapping as well as distinct functions. UBASH3B is widely expressed while UBASH3A is only found in lymphoid cells. UBASH3A facilitates apoptosis induced in T cells through its interaction with the apoptosis-inducing factor AIF. UBASH3B is an active phosphatase while UBASH3A is not. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212725 [Multi-domain]  Cd Length: 59  Bit Score: 69.25  E-value: 1.06e-15
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gi 1789691051 198 TYRAMYDYSAQDEDEVSFRDGDYIVnVQPID-----DGWMYGTVQRTGRTGMLPANYIEF 252
Cdd:cd11791     1 VLRVLYPYTPQEEDELELVPGDYIY-VSPEEldsssDGWVEGTSWLTGCSGLLPENYTEK 59
SH3_9 pfam14604
Variant SH3 domain;
201-251 1.29e-15

Variant SH3 domain;


Pssm-ID: 434066 [Multi-domain]  Cd Length: 49  Bit Score: 68.80  E-value: 1.29e-15
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gi 1789691051 201 AMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGtvQRTGRTGMLPANYIE 251
Cdd:pfam14604   1 ALYPYEPKDDDELSLQRGDVITVIEESEDGWWEG--INTGRTGLVPANYVE 49
SH3_Sorbs_3 cd11780
Third (or C-terminal) Src Homology 3 domain of Sorbin and SH3 domain containing (Sorbs) ...
199-251 2.58e-15

Third (or C-terminal) Src Homology 3 domain of Sorbin and SH3 domain containing (Sorbs) proteins and similar domains; This family, also called the vinexin family, is composed predominantly of adaptor proteins containing one sorbin homology (SoHo) and three SH3 domains. Members include the third SH3 domains of Sorbs1 (or ponsin), Sorbs2 (or ArgBP2), Vinexin (or Sorbs3), and similar domains. They are involved in the regulation of cytoskeletal organization, cell adhesion, and growth factor signaling. Members of this family bind multiple partners including signaling molecules like c-Abl, c-Arg, Sos, and c-Cbl, as well as cytoskeletal molecules such as vinculin and afadin. They may have overlapping functions. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212714 [Multi-domain]  Cd Length: 55  Bit Score: 68.10  E-value: 2.58e-15
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gi 1789691051 199 YRAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQRTGRTGMLPANYIE 251
Cdd:cd11780     2 YRALYSYTPQNEDELELREGDIVYVMEKCDDGWFVGTSERTGLFGTFPGNYVA 54
SH3_Sorbs1_3 cd11916
Third (or C-terminal) Src Homology 3 domain of Sorbin and SH3 domain containing 1 (Sorbs1), ...
198-253 1.44e-14

Third (or C-terminal) Src Homology 3 domain of Sorbin and SH3 domain containing 1 (Sorbs1), also called ponsin; Sorbs1 is also called ponsin, SH3P12, or CAP (c-Cbl associated protein). It is an adaptor protein containing one sorbin homology (SoHo) and three SH3 domains. It binds Cbl and plays a major role in regulating the insulin signaling pathway by enhancing insulin-induced phosphorylation of Cbl. Sorbs1, like vinexin, localizes at cell-ECM and cell-cell adhesion sites where it binds vinculin, paxillin, and afadin. It may function in the control of cell motility. Other interaction partners of Sorbs1 include c-Abl, Sos, flotillin, Grb4, ataxin-7, filamin C, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212849 [Multi-domain]  Cd Length: 59  Bit Score: 66.17  E-value: 1.44e-14
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gi 1789691051 198 TYRAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQRTGRTGMLPANYIEFV 253
Cdd:cd11916     3 SYQALYSYAPQNDDELELRDGDIVDVMEKCDDGWFVGTSRRTKQFGTFPGNYVKLL 58
LIM_N_RAP cd09446
The LIM domain of N-RAP; The LIM domain of N-RAP: N-RAP is a muscle-specific protein ...
9-40 1.81e-14

The LIM domain of N-RAP; The LIM domain of N-RAP: N-RAP is a muscle-specific protein concentrated at myotendinous junctions in skeletal muscle and intercalated disks in cardiac muscle. LIM domain is found at the N-terminus of N-RAP and the C-terminal of N-RAP contains a region with multiple of nebulin repeats. N-RAP functions as a scaffolding protein that organizes alpha-actinin and actin into symmetrical I-Z-I structures in developing myofibrils. Nebulin repeat is known as actin binding domain. The N-RAP is hypothesized to form antiparallel dimerization via its LIM domain. As in other LIM domains, this domain family is 50-60 amino acids in size and shares two characteristic zinc finger motifs. The two zinc fingers contain eight conserved residues, mostly cysteines and histidines, which coordinately bond to two zinc atoms. LIM domains function as adaptors or scaffolds to support the assembly of multimeric protein.


Pssm-ID: 188830  Cd Length: 53  Bit Score: 66.10  E-value: 1.81e-14
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gi 1789691051   9 WHKGCFHCEVCKMALNMNNYKGYEKKPYCNAH 40
Cdd:cd09446    21 WHKACFHCEVCKMMLTVNNFVSHQKKPYCQAH 52
SH3_Cortactin cd11959
Src homology 3 domain of Cortactin; Cortactin was originally identified as a substrate of Src ...
201-251 2.66e-14

Src homology 3 domain of Cortactin; Cortactin was originally identified as a substrate of Src kinase. It is an actin regulatory protein that binds to the Arp2/3 complex and stabilizes branched actin filaments. It is involved in cellular processes that affect cell motility, adhesion, migration, endocytosis, and invasion. It is expressed ubiquitously except in hematopoietic cells, where the homolog hematopoietic lineage cell-specific 1 (HS1) is expressed instead. Cortactin contains an N-terminal acidic domain, several copies of a repeat domain found in cortactin and HS1, a proline-rich region, and a C-terminal SH3 domain. The N-terminal region interacts with the Arp2/3 complex and F-actin, and is crucial in regulating branched actin assembly. Cortactin also serves as a scaffold and provides a bridge to the actin cytoskeleton for membrane trafficking and signaling proteins that bind to its SH3 domain. Binding partners for the SH3 domain of cortactin include dynamin2, N-WASp, MIM, FGD1, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212892 [Multi-domain]  Cd Length: 53  Bit Score: 65.52  E-value: 2.66e-14
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gi 1789691051 201 AMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQrtGRTGMLPANYIE 251
Cdd:cd11959     4 ALYDYQAADDDEISFDPDDIITNIEMIDEGWWRGVCR--GKYGLFPANYVE 52
SH3_Abp1_fungi_C2 cd11961
Second C-terminal Src homology 3 domain of Fungal Actin-binding protein 1; Abp1 is an adaptor ...
198-251 5.82e-14

Second C-terminal Src homology 3 domain of Fungal Actin-binding protein 1; Abp1 is an adaptor protein that functions in receptor-mediated endocytosis and vesicle trafficking. It contains an N-terminal actin-binding module, the actin-depolymerizing factor (ADF) homology domain, a central proline-rich region, and a C-terminal SH3 domain (many yeast Abp1 proteins contain two C-terminal SH3 domains). Yeast Abp1 also contains two acidic domains that bind directly to the Arp2/3 complex, which is required to initiate actin polymerization. The SH3 domain of yeast Abp1 binds and localizes the kinases, Ark1p and Prk1p, which facilitate actin patch disassembly following vesicle internalization. It also mediates the localization to the actin patch of the synaptojanin-like protein, Sjl2p, which plays a key role in endocytosis. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212894 [Multi-domain]  Cd Length: 53  Bit Score: 64.47  E-value: 5.82e-14
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gi 1789691051 198 TYRAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQrtGRTGMLPANYIE 251
Cdd:cd11961     1 WAKALYDYDAAEDNELSFFENDKIINIEFVDDDWWLGECH--GSRGLFPSNYVE 52
SH3_Vinexin_3 cd11918
Third (or C-terminal) Src Homology 3 domain of Vinexin, also called Sorbin and SH3 domain ...
199-250 4.63e-13

Third (or C-terminal) Src Homology 3 domain of Vinexin, also called Sorbin and SH3 domain containing 3 (Sorbs3); Vinexin is also called Sorbs3, SH3P3, and SH3-containing adapter molecule 1 (SCAM-1). It is an adaptor protein containing one sorbin homology (SoHo) and three SH3 domains. Vinexin was first identified as a vinculin binding protein; it is co-localized with vinculin at cell-ECM and cell-cell adhesion sites. There are several splice variants of vinexin: alpha, which contains the SoHo and three SH3 domains and displays tissue-specific expression; and beta, which contains only the three SH3 domains and is widely expressed. Vinexin alpha stimulates the accumulation of F-actin at focal contact sites. Vinexin also promotes keratinocyte migration and wound healing. The SH3 domains of vinexin have been reported to bind a number of ligands including vinculin, WAVE2, DLG5, Abl, and Cbl. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212851 [Multi-domain]  Cd Length: 58  Bit Score: 62.28  E-value: 4.63e-13
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gi 1789691051 199 YRAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQRTGRTGMLPANYI 250
Cdd:cd11918     4 YKAVYQYRPQNEDELELREGDRVDVMQQCDDGWFVGVSRRTQKFGTFPGNYV 55
SH3_CD2AP-like_1 cd11873
First Src Homology 3 domain (SH3A) of CD2-associated protein and similar proteins; This ...
198-251 1.50e-12

First Src Homology 3 domain (SH3A) of CD2-associated protein and similar proteins; This subfamily is composed of the first SH3 domain (SH3A) of CD2AP, CIN85 (Cbl-interacting protein of 85 kDa), and similar domains. CD2AP and CIN85 are adaptor proteins that bind to protein partners and assemble complexes that have been implicated in T cell activation, kidney function, and apoptosis of neuronal cells. They also associate with endocytic proteins, actin cytoskeleton components, and other adaptor proteins involved in receptor tyrosine kinase (RTK) signaling. CD2AP and the main isoform of CIN85 contain three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CD2AP and CIN85 to bind various protein partners and assemble complexes that have been implicated in many different functions. SH3A of both proteins bind to an atypical PXXXPR motif at the C-terminus of Cbl and the cytoplasmic domain of the cell adhesion protein CD2. CIN85 SH3A binds to internal proline-rich motifs within the proline-rich region; this intramolecular interaction serves as a regulatory mechanism to keep CIN85 in a closed conformation, preventing the recruitment of other proteins. CIN85 SH3A has also been shown to bind ubiquitin. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212806 [Multi-domain]  Cd Length: 53  Bit Score: 60.74  E-value: 1.50e-12
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gi 1789691051 198 TYRAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQrtGRTGMLPANYIE 251
Cdd:cd11873     1 EVIVEFDYDAEEPDELTLKVGDIITNVKKMEEGWWEGTLN--GKRGMFPDNFVK 52
SH3_Endophilin_A cd11803
Src homology 3 domain of Endophilin-A; Endophilins play roles in synaptic vesicle formation, ...
199-253 3.41e-12

Src homology 3 domain of Endophilin-A; Endophilins play roles in synaptic vesicle formation, virus budding, mitochondrial morphology maintenance, receptor-mediated endocytosis inhibition, and endosomal sorting. They are classified into two types, A and B. Vertebrates contain three endophilin-A isoforms (A1, A2, and A3). Endophilin-A proteins are enriched in the brain and play multiple roles in receptor-mediated endocytosis. They tubulate membranes and regulate calcium influx into neurons to trigger the activation of the endocytic machinery. They are also involved in the sorting of plasma membrane proteins, actin filament assembly, and the uncoating of clathrin-coated vesicles for fusion with endosomes. Endophilins contain an N-terminal N-BAR domain (BAR domain with an additional N-terminal amphipathic helix), followed by a variable region containing proline clusters, and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212737 [Multi-domain]  Cd Length: 55  Bit Score: 59.97  E-value: 3.41e-12
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gi 1789691051 199 YRAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQrtGRTGMLPANYIEFV 253
Cdd:cd11803     3 CRALYDFEPENEGELGFKEGDIITLTNQIDENWYEGMVN--GQSGFFPVNYVEVL 55
SH3_PACSIN cd11843
Src homology 3 domain of Protein kinase C and Casein kinase Substrate in Neurons (PACSIN) ...
200-251 7.94e-12

Src homology 3 domain of Protein kinase C and Casein kinase Substrate in Neurons (PACSIN) proteins; PACSINs, also called Synaptic dynamin-associated proteins (Syndapins), act as regulators of cytoskeletal and membrane dynamics. They bind both dynamin and Wiskott-Aldrich syndrome protein (WASP), and may provide direct links between the actin cytoskeletal machinery through WASP and dynamin-dependent endocytosis. Vetebrates harbor three isoforms with distinct expression patterns and specific functions. PACSINs contain an N-terminal F-BAR domain and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212777 [Multi-domain]  Cd Length: 53  Bit Score: 58.59  E-value: 7.94e-12
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gi 1789691051 200 RAMYDYSAQDEDEVSFRDGDYIVNVQPIDD-GWMYGtvQRTGRTGMLPANYIE 251
Cdd:cd11843     3 RALYDYEGQESDELSFKAGDILTKLEEEDEqGWCKG--RLDGRVGLYPANYVE 53
SH3_PACSIN_like cd11999
Src homology 3 domain of an unknown subfamily of proteins with similarity to Protein kinase C ...
200-251 1.02e-11

Src homology 3 domain of an unknown subfamily of proteins with similarity to Protein kinase C and Casein kinase Substrate in Neurons (PACSIN) proteins; PACSINs, also called Synaptic dynamin-associated proteins (Syndapins), act as regulators of cytoskeletal and membrane dynamics. They bind both dynamin and Wiskott-Aldrich syndrome protein (WASP), and may provide direct links between the actin cytoskeletal machinery through WASP and dynamin-dependent endocytosis. Vetebrates harbor three isoforms with distinct expression patterns and specific functions. PACSINs contain an N-terminal F-BAR domain and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212932 [Multi-domain]  Cd Length: 56  Bit Score: 58.41  E-value: 1.02e-11
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gi 1789691051 200 RAMYDYSAQDEDEVSFRDGDYIVNVQPIDD-GWMYGtVQRTGRTGMLPANYIE 251
Cdd:cd11999     5 RAVYDYTGQEPDELSFKAGEELLKVEDEDEqGWCKG-VTDGGAVGLYPANYVE 56
SH3_Eve1_5 cd11818
Fifth Src homology 3 domain of ADAM-binding protein Eve-1; Eve-1, also called SH3 ...
200-249 1.05e-11

Fifth Src homology 3 domain of ADAM-binding protein Eve-1; Eve-1, also called SH3 domain-containing protein 19 (SH3D19) or EEN-binding protein (EBP), exists in multiple alternatively spliced isoforms. The longest isoform contains five SH3 domain in the C-terminal region and seven proline-rich motifs in the N-terminal region. It is abundantly expressed in skeletal muscle and heart, and may be involved in regulating the activity of ADAMs (A disintegrin and metalloproteases). Eve-1 interacts with EEN, an endophilin involved in endocytosis and may be the target of the MLL-EEN fusion protein that is implicated in leukemogenesis. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212752 [Multi-domain]  Cd Length: 50  Bit Score: 58.26  E-value: 1.05e-11
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gi 1789691051 200 RAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQrtGRTGMLPANY 249
Cdd:cd11818     3 RALYDFTGENEDELSFKAGDIITELESIDEEWMSGELR--GKSGIFPKNF 50
SH3_Abi cd11826
Src homology 3 domain of Abl Interactor proteins; Abl interactor (Abi) proteins are adaptor ...
200-251 1.26e-11

Src homology 3 domain of Abl Interactor proteins; Abl interactor (Abi) proteins are adaptor proteins serving as binding partners and substrates of Abl tyrosine kinases. They are involved in regulating actin cytoskeletal reorganization and play important roles in membrane-ruffling, endocytosis, cell motility, and cell migration. They localize to sites of actin polymerization in epithelial adherens junction and immune synapses, as well as to the leading edge of lamellipodia. Vertebrates contain two Abi proteins, Abi1 and Abi2. Abi1 displays a wide expression pattern while Abi2 is highly expressed in the eye and brain. Abi proteins contain a homeobox homology domain, a proline-rich region, and a SH3 domain. The SH3 domain of Abi binds to a PxxP motif in Abl. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212760 [Multi-domain]  Cd Length: 52  Bit Score: 58.10  E-value: 1.26e-11
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gi 1789691051 200 RAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQrtGRTGMLPANYIE 251
Cdd:cd11826     3 VALYDYTADKDDELSFQEGDIIYVTKKNDDGWYEGVLN--GVTGLFPGNYVE 52
SH3_HS1 cd12073
Src homology 3 domain of Hematopoietic lineage cell-specific protein 1; HS1, also called HCLS1 ...
201-252 1.73e-11

Src homology 3 domain of Hematopoietic lineage cell-specific protein 1; HS1, also called HCLS1 (hematopoietic cell-specific Lyn substrate 1), is a cortactin homolog expressed specifically in hematopoietic cells. It is an actin regulatory protein that binds the Arp2/3 complex and stabilizes branched actin filaments. It is required for cell spreading and signaling in lymphocytes. It regulates cytoskeletal remodeling that controls lymphocyte trafficking, and it also affects tissue invasion and infiltration of leukemic B cells. Like cortactin, HS1 contains an N-terminal acidic domain, several copies of a repeat domain found in cortactin and HS1, a proline-rich region, and a C-terminal SH3 domain. The N-terminal region binds the Arp2/3 complex and F-actin, while the C-terminal region acts as an adaptor or scaffold that can connect varied proteins that bind the SH3 domain within the actin network. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 213006 [Multi-domain]  Cd Length: 55  Bit Score: 57.92  E-value: 1.73e-11
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gi 1789691051 201 AMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQrtGRTGMLPANYIEF 252
Cdd:cd12073     5 ALYDYQGEGDDEISFDPQETITDIEMVDEGWWKGTCH--GHRGLFPANYVEL 54
SH3_OSTF1 cd11772
Src Homology 3 domain of metazoan osteoclast stimulating factor 1; OSTF1, also named OSF or ...
199-251 1.75e-11

Src Homology 3 domain of metazoan osteoclast stimulating factor 1; OSTF1, also named OSF or SH3P2, is a signaling protein containing SH3 and ankyrin-repeat domains. It acts through a Src-related pathway to enhance the formation of osteoclasts and bone resorption. It also acts as a negative regulator of cell motility. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212706 [Multi-domain]  Cd Length: 53  Bit Score: 57.69  E-value: 1.75e-11
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gi 1789691051 199 YRAMYDYSAQDEDEVSFRDGD--YIVNVQpiDDGWMYGTVQrtGRTGMLPANYIE 251
Cdd:cd11772     2 FRALYDYEAQHPDELSFEEGDllYISDKS--DPNWWKATCG--GKTGLIPSNYVE 52
SH3_PIX cd11877
Src Homology 3 domain of Pak Interactive eXchange factors; PIX proteins are Rho guanine ...
198-251 2.03e-11

Src Homology 3 domain of Pak Interactive eXchange factors; PIX proteins are Rho guanine nucleotide exchange factors (GEFs), which activate small GTPases by exchanging bound GDP for free GTP. They act as GEFs for both Cdc42 and Rac 1, and have been implicated in cell motility, adhesion, neurite outgrowth, and cell polarity. Vertebrates contain two proteins from the PIX subfamily, alpha-PIX and beta-PIX. Alpha-PIX, also called ARHGEF6, is localized in dendritic spines where it regulates spine morphogenesis. Mutations in the ARHGEF6 gene cause X-linked intellectual disability in humans. Beta-PIX play roles in regulating neuroendocrine exocytosis, focal adhesion maturation, cell migration, synaptic vesicle localization, and insulin secretion. PIX proteins contain an N-terminal SH3 domain followed by RhoGEF (also called Dbl-homologous or DH) and Pleckstrin Homology (PH) domains, and a C-terminal leucine-zipper domain for dimerization. The SH3 domain of PIX binds to an atypical PxxxPR motif in p21-activated kinases (PAKs) with high affinity. The binding of PAKs to PIX facilitate the localization of PAKs to focal complexes and also localizes PAKs to PIX targets Cdc43 and Rac, leading to the activation of PAKs. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212810 [Multi-domain]  Cd Length: 53  Bit Score: 57.71  E-value: 2.03e-11
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gi 1789691051 198 TYRAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQrtGRTGMLPANYIE 251
Cdd:cd11877     1 LVRAKFNFEGTNEDELSFDKGDIITVTQVVEGGWWEGTLN--GKTGWFPSNYVK 52
SH3_PSTPIP1 cd11824
Src homology 3 domain of Proline-Serine-Threonine Phosphatase-Interacting Protein 1; PSTPIP1, ...
199-251 2.08e-11

Src homology 3 domain of Proline-Serine-Threonine Phosphatase-Interacting Protein 1; PSTPIP1, also called CD2 Binding Protein 1 (CD2BP1), is mainly expressed in hematopoietic cells. It is a binding partner of the cell surface receptor CD2 and PTP-PEST, a tyrosine phosphatase which functions in cell motility and Rac1 regulation. It also plays a role in the activation of the Wiskott-Aldrich syndrome protein (WASP), which couples actin rearrangement and T cell activation. Mutations in the gene encoding PSTPIP1 cause the autoinflammatory disorder known as PAPA (pyogenic sterile arthritis, pyoderma gangrenosum, and acne) syndrome. PSTPIP1 contains an N-terminal F-BAR domain, PEST motifs, and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212758 [Multi-domain]  Cd Length: 53  Bit Score: 57.77  E-value: 2.08e-11
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gi 1789691051 199 YRAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMygTVQRTGRTGMLPANYIE 251
Cdd:cd11824     2 YSVLYDYTAQEDDELSISKGDVVAVIEKGEDGWW--TVERNGQKGLVPGTYLE 52
SH3_PACSIN3 cd11997
Src homology 3 domain of Protein kinase C and Casein kinase Substrate in Neurons 3 (PACSIN3); ...
200-251 2.42e-11

Src homology 3 domain of Protein kinase C and Casein kinase Substrate in Neurons 3 (PACSIN3); PACSIN 3 or Syndapin III (Synaptic dynamin-associated protein III) is expressed ubiquitously and regulates glucose uptake in adipocytes through its role in GLUT1 trafficking. It also modulates the subcellular localization and stimulus-specific function of the cation channel TRPV4. PACSINs act as regulators of cytoskeletal and membrane dynamics. Vetebrates harbor three isoforms with distinct expression patterns and specific functions. PACSINs contain an N-terminal F-BAR domain and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212930 [Multi-domain]  Cd Length: 56  Bit Score: 57.66  E-value: 2.42e-11
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gi 1789691051 200 RAMYDYSAQDEDEVSFRDGDYIVNVQPIDD-GWMYGTVQrTGRTGMLPANYIE 251
Cdd:cd11997     5 RALYDYTGQEADELSFKAGEELLKIGEEDEqGWCKGRLL-SGRIGLYPANYVE 56
SH3_UBASH3B cd11936
Src homology 3 domain of Ubiquitin-associated and SH3 domain-containing protein B; UBASH3B, ...
198-250 2.67e-11

Src homology 3 domain of Ubiquitin-associated and SH3 domain-containing protein B; UBASH3B, also called Suppressor of T cell receptor Signaling (STS)-1 or T cell Ubiquitin LigAnd (TULA)-2 is an active phosphatase that is expressed ubiquitously. The phosphatase activity of UBASH3B is essential for its roles in the suppression of TCR signaling and the regulation of EGFR. It also interacts with Syk and functions as a negative regulator of platelet glycoprotein VI signaling. TULA proteins contain an N-terminal UBA domain, a central SH3 domain, and a C-terminal histidine phosphatase domain. They bind c-Cbl through the SH3 domain and to ubiquitin via UBA. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212869  Cd Length: 62  Bit Score: 57.74  E-value: 2.67e-11
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gi 1789691051 198 TYRAMYDYSAQDEDEVSFRDGDYI----VNVQPIDDGWMYGTVQRTGRTGMLPANYI 250
Cdd:cd11936     3 TLQVIYPYTPQNDDELELVPGDYIfmspMEQTSTSEGWIYGTSLTTGCSGLLPENYI 59
SH3_Nostrin cd11823
Src homology 3 domain of Nitric Oxide Synthase TRaffic INducer; Nostrin is expressed in ...
200-251 4.33e-11

Src homology 3 domain of Nitric Oxide Synthase TRaffic INducer; Nostrin is expressed in endothelial and epithelial cells and is involved in the regulation, trafficking and targeting of endothelial NOS (eNOS). It facilitates the endocytosis of eNOS by coordinating the functions of dynamin and the Wiskott-Aldrich syndrome protein (WASP). Increased expression of Nostrin may be correlated to preeclampsia. Nostrin contains an N-terminal F-BAR domain and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212757 [Multi-domain]  Cd Length: 53  Bit Score: 56.58  E-value: 4.33e-11
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gi 1789691051 200 RAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQrtGRTGMLPANYIE 251
Cdd:cd11823     3 KALYSYTANREDELSLQPGDIIEVHEKQDDGWWLGELN--GKKGIFPATYVE 52
SH3_Amphiphysin cd11790
Src Homology 3 domain of Amphiphysin and related domains; Amphiphysins function primarily in ...
196-251 6.30e-11

Src Homology 3 domain of Amphiphysin and related domains; Amphiphysins function primarily in endocytosis and other membrane remodeling events. They exist in several isoforms and mammals possess two amphiphysin proteins from distinct genes. Amphiphysin I proteins, enriched in the brain and nervous system, contain domains that bind clathrin, Adaptor Protein complex 2 (AP2), dynamin, and synaptojanin. They function in synaptic vesicle endocytosis. Human autoantibodies to amphiphysin I hinder GABAergic signaling and contribute to the pathogenesis of paraneoplastic stiff-person syndrome. Some amphiphysin II isoforms, also called Bridging integrator 1 (Bin1), are localized in many different tissues and may function in intracellular vesicle trafficking. In skeletal muscle, Bin1 plays a role in the organization and maintenance of the T-tubule network. Mutations in Bin1 are associated with autosomal recessive centronuclear myopathy. Amphiphysins contain an N-terminal BAR domain with an additional N-terminal amphipathic helix (an N-BAR), a variable central domain, and a C-terminal SH3 domain. The SH3 domain of amphiphysins bind proline-rich motifs present in binding partners such as dynamin, synaptojanin, and nsP3. It also belongs to a subset of SH3 domains that bind ubiquitin in a site that overlaps with the peptide binding site. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212724 [Multi-domain]  Cd Length: 64  Bit Score: 56.57  E-value: 6.30e-11
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gi 1789691051 196 LRTYRAMYDYSAQDEDEVSFRDGDyIVNVQPIDD------GWMYGTVQRTGRTGMLPANYIE 251
Cdd:cd11790     2 LYKVRATHDYTAEDTDELTFEKGD-VILVIPFDDpeeqdeGWLMGVKESTGCRGVFPENFTE 62
SH3_PACSIN1-2 cd11998
Src homology 3 domain of Protein kinase C and Casein kinase Substrate in Neurons 1 (PACSIN1) ...
200-251 8.87e-11

Src homology 3 domain of Protein kinase C and Casein kinase Substrate in Neurons 1 (PACSIN1) and PACSIN 2; PACSIN 1 or Syndapin I (Synaptic dynamin-associated protein I) is expressed specifically in the brain and is localized in neurites and synaptic boutons. It binds the brain-specific proteins dynamin I, synaptojanin, synapsin I, and neural Wiskott-Aldrich syndrome protein (nWASP), and functions as a link between the cytoskeletal machinery and synaptic vesicle endocytosis. PACSIN 1 interacts with huntingtin and may be implicated in the neuropathology of Huntington's disease. PACSIN 2 or Syndapin II is expressed ubiquitously and is involved in the regulation of tubulin polymerization. It associates with Golgi membranes and forms a complex with dynamin II which is crucial in promoting vesicle formation from the trans-Golgi network. PACSINs act as regulators of cytoskeletal and membrane dynamics. Vetebrates harbor three isoforms with distinct expression patterns and specific functions. PACSINs contain an N-terminal F-BAR domain and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212931 [Multi-domain]  Cd Length: 56  Bit Score: 56.11  E-value: 8.87e-11
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gi 1789691051 200 RAMYDYSAQDEDEVSFRDGDYIVNVQPIDD-GWMYGTVQrTGRTGMLPANYIE 251
Cdd:cd11998     4 RALYDYDGQEQDELSFKAGDELTKLEDEDEqGWCKGRLD-SGQVGLYPANYVE 55
SH3_SNX9_like cd11763
Src Homology 3 domain of Sorting Nexin 9 and similar proteins; Sorting nexins (SNXs) are Phox ...
199-251 8.89e-11

Src Homology 3 domain of Sorting Nexin 9 and similar proteins; Sorting nexins (SNXs) are Phox homology (PX) domain containing proteins that are involved in regulating membrane traffic and protein sorting in the endosomal system. SNXs differ from each other in their lipid-binding specificity, subcellular localization and specific function in the endocytic pathway. This subfamily consists of SH3 domain containing SNXs including SNX9, SNX18, SNX33, and similar proteins. SNX9 is localized to plasma membrane endocytic sites and acts primarily in clathrin-mediated endocytosis, while SNX18 is localized to peripheral endosomal structures, and acts in a trafficking pathway that is clathrin-independent but relies on AP-1 and PACS1. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212697 [Multi-domain]  Cd Length: 55  Bit Score: 55.80  E-value: 8.89e-11
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gi 1789691051 199 YRAMYDYSAQDEDEVSFRDGDYI-VNVQPIDDGWMYGTVQRtGRTGMLPANYIE 251
Cdd:cd11763     2 VRALYDFDSQPSGELSLRAGEVLtITRQDVGDGWLEGRNSR-GEVGLFPSSYVE 54
SH3_Sorbs2_3 cd11917
Third (or C-terminal) Src Homology 3 domain of Sorbin and SH3 domain containing 2 (Sorbs2), ...
199-251 9.80e-11

Third (or C-terminal) Src Homology 3 domain of Sorbin and SH3 domain containing 2 (Sorbs2), also called Arg-binding protein 2 (ArgBP2); Sorbs2 or ArgBP2 is an adaptor protein containing one sorbin homology (SoHo) and three SH3 domains. It regulates actin-dependent processes including cell adhesion, morphology, and migration. It is expressed in many tissues and is abundant in the heart. Like vinexin, it is found in focal adhesion where it interacts with vinculin and afadin. It also localizes in epithelial cell stress fibers and in cardiac muscle cell Z-discs. Sorbs2 has been implicated to play roles in the signaling of c-Arg, Akt, and Pyk2. Other interaction partners of Sorbs2 include c-Abl, flotillin, spectrin, dynamin 1/2, synaptojanin, PTP-PEST, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212850 [Multi-domain]  Cd Length: 61  Bit Score: 56.15  E-value: 9.80e-11
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gi 1789691051 199 YRAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQRTGRTGMLPANYIE 251
Cdd:cd11917     7 FQALYNYMPRNEDELELREGDVIDVMEKCDDGWFVGTSRRTKFFGTFPGNYVK 59
SH3_Intersectin_1 cd11836
First Src homology 3 domain (or SH3A) of Intersectin; Intersectins (ITSNs) are adaptor ...
199-251 1.49e-10

First Src homology 3 domain (or SH3A) of Intersectin; Intersectins (ITSNs) are adaptor proteins that function in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. They are essential for initiating clathrin-coated pit formation. They bind to many proteins through their multidomain structure and facilitate the assembly of multimeric complexes. Vertebrates contain two ITSN proteins, ITSN1 and ITSN2, which exist in alternatively spliced short and long isoforms. The short isoforms contain two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoforms, in addition, contain RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. ITSN1 and ITSN2 are both widely expressed, with variations depending on tissue type and stage of development. The first SH3 domain (or SH3A) of ITSN1 has been shown to bind many proteins including Sos1, dynamin1/2, CIN85, c-Cbl, PI3K-C2, SHIP2, N-WASP, and CdGAP, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212770 [Multi-domain]  Cd Length: 55  Bit Score: 55.44  E-value: 1.49e-10
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gi 1789691051 199 YRAMYDYSAQDEDEVSFRDGDyIVNV---QPIDDGWMYGTVQrtGRTGMLPANYIE 251
Cdd:cd11836     2 YRALYAFEARNPDEISFQPGD-IIQVdesQVAEPGWLAGELK--GKTGWFPANYVE 54
SH3_1 pfam00018
SH3 domain; SH3 (Src homology 3) domains are often indicative of a protein involved in signal ...
200-247 2.04e-10

SH3 domain; SH3 (Src homology 3) domains are often indicative of a protein involved in signal transduction related to cytoskeletal organization. First described in the Src cytoplasmic tyrosine kinase. The structure is a partly opened beta barrel.


Pssm-ID: 394975 [Multi-domain]  Cd Length: 47  Bit Score: 54.90  E-value: 2.04e-10
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gi 1789691051 200 RAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVqRTGRTGMLPA 247
Cdd:pfam00018   1 VALYDYTAQEPDELSFKKGDIIIVLEKSEDGWWKGRN-KGGKEGLIPS 47
SH3_SH3RF_C cd11785
C-terminal (Fourth) Src Homology 3 domain of SH3 domain containing ring finger 1 (SH3RF1), ...
199-251 2.06e-10

C-terminal (Fourth) Src Homology 3 domain of SH3 domain containing ring finger 1 (SH3RF1), SH3RF3, and similar domains; SH3RF1 (or POSH) and SH3RF3 (or POSH2) are scaffold proteins that function as E3 ubiquitin-protein ligases. They contain an N-terminal RING finger domain and four SH3 domains. This model represents the fourth SH3 domain, located at the C-terminus of SH3RF1 and SH3RF3, and similar domains. SH3RF1 plays a role in calcium homeostasis through the control of the ubiquitin domain protein Herp. It may also have a role in regulating death receptor mediated and JNK mediated apoptosis. SH3RF3 interacts with p21-activated kinase 2 (PAK2) and GTP-loaded Rac1. It may play a role in regulating JNK mediated apoptosis in certain conditions. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212719  Cd Length: 55  Bit Score: 55.16  E-value: 2.06e-10
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gi 1789691051 199 YRAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQRTGRTGMLPANYIE 251
Cdd:cd11785     2 YRVIVPYPPQSEAELELKEGDIVFVHKKREDGWFKGTLQRTGKTGLFPGSFVE 54
SH3_MyoIe_If_like cd11827
Src homology 3 domain of Myosins Ie, If, and similar proteins; Myosins Ie (MyoIe) and If ...
200-251 2.16e-10

Src homology 3 domain of Myosins Ie, If, and similar proteins; Myosins Ie (MyoIe) and If (MyoIf) are nonmuscle, unconventional, long tailed, class I myosins containing an N-terminal motor domain and a myosin tail with TH1, TH2, and SH3 domains. MyoIe interacts with the endocytic proteins, dynamin and synaptojanin-1, through its SH3 domain; it may play a role in clathrin-dependent endocytosis. In the kidney, MyoIe is critical for podocyte function and normal glomerular filtration. Mutations in MyoIe is associated with focal segmental glomerulosclerosis, a disease characterized by massive proteinuria and progression to end-stage kidney disease. MyoIf is predominantly expressed in the immune system; it plays a role in immune cell motility and innate immunity. Mutations in MyoIf may be associated with the loss of hearing. The MyoIf gene has also been found to be fused to the MLL (Mixed lineage leukemia) gene in infant acute myeloid leukemias (AML). SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212761 [Multi-domain]  Cd Length: 53  Bit Score: 54.73  E-value: 2.16e-10
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gi 1789691051 200 RAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQrtGRTGMLPANYIE 251
Cdd:cd11827     3 KALYAYDAQDTDELSFNEGDIIEILKEDPSGWWTGRLR--GKEGLFPGNYVE 52
SH3_CD2AP-like_3 cd11875
Third Src Homology 3 domain (SH3C) of CD2-associated protein and similar proteins; This ...
198-251 3.31e-10

Third Src Homology 3 domain (SH3C) of CD2-associated protein and similar proteins; This subfamily is composed of the third SH3 domain (SH3C) of CD2AP, CIN85 (Cbl-interacting protein of 85 kDa), and similar domains. CD2AP and CIN85 are adaptor proteins that bind to protein partners and assemble complexes that have been implicated in T cell activation, kidney function, and apoptosis of neuronal cells. They also associate with endocytic proteins, actin cytoskeleton components, and other adaptor proteins involved in receptor tyrosine kinase (RTK) signaling. CD2AP and the main isoform of CIN85 contain three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CD2AP and CIN85 to bind various protein partners and assemble complexes that have been implicated in many different functions. SH3C of both proteins have been shown to bind to ubiquitin. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212808 [Multi-domain]  Cd Length: 55  Bit Score: 54.28  E-value: 3.31e-10
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gi 1789691051 198 TYRAMYDYSAQDEDEVSFRDGD--YIVNVQPIDDGWMYGTVQrtGRTGMLPANYIE 251
Cdd:cd11875     1 KARVLFDYEAENEDELTLREGDivTILSKDCEDKGWWKGELN--GKRGVFPDNFVE 54
SH3_GRB2_like_C cd11805
C-terminal Src homology 3 domain of Growth factor receptor-bound protein 2 (GRB2) and related ...
200-251 6.13e-10

C-terminal Src homology 3 domain of Growth factor receptor-bound protein 2 (GRB2) and related proteins; This family includes the adaptor protein GRB2 and related proteins including Drosophila melanogaster Downstream of receptor kinase (DRK), Caenorhabditis elegans Sex muscle abnormal protein 5 (Sem-5), GRB2-related adaptor protein (GRAP), GRAP2, and similar proteins. Family members contain an N-terminal SH3 domain, a central SH2 domain, and a C-terminal SH3 domain. GRB2/Sem-5/DRK is a critical signaling molecule that regulates the Ras pathway by linking tyrosine kinases to the Ras guanine nucleotide releasing protein Sos (son of sevenless), which converts Ras to the active GTP-bound state. GRAP2 plays an important role in T cell receptor (TCR) signaling by promoting the formation of the SLP-76:LAT complex, which couples the TCR to the Ras pathway. GRAP acts as a negative regulator of T cell receptor (TCR)-induced lymphocyte proliferation by downregulating the signaling to the Ras/ERK pathway. The C-terminal SH3 domains (SH3c) of GRB2 and GRAP2 have been shown to bind to classical PxxP motif ligands, as well as to non-classical motifs. GRB2 SH3c binds Gab2 (Grb2-associated binder 2) through epitopes containing RxxK motifs, while the SH3c of GRAP2 binds to the phosphatase-like protein HD-PTP via a RxxxxK motif. SH3 domains are protein interaction domains that typically bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212739 [Multi-domain]  Cd Length: 53  Bit Score: 53.40  E-value: 6.13e-10
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gi 1789691051 200 RAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQrtGRTGMLPANYIE 251
Cdd:cd11805     3 QALYDFNPQEPGELEFRRGDIITVLDSSDPDWWKGELR--GRVGIFPANYVQ 52
SH3_Abp1_fungi_C1 cd11962
First C-terminal Src homology 3 domain of Fungal Actin-binding protein 1; Abp1 is an adaptor ...
203-251 8.01e-10

First C-terminal Src homology 3 domain of Fungal Actin-binding protein 1; Abp1 is an adaptor protein that functions in receptor-mediated endocytosis and vesicle trafficking. It contains an N-terminal actin-binding module, the actin-depolymerizing factor (ADF) homology domain, a central proline-rich region, and a C-terminal SH3 domain (many yeast Abp1 proteins contain two C-terminal SH3 domains). Yeast Abp1 also contains two acidic domains that bind directly to the Arp2/3 complex, which is required to initiate actin polymerization. The SH3 domain of yeast Abp1 binds and localizes the kinases, Ark1p and Prk1p, which facilitate actin patch disassembly following vesicle internalization. It also mediates the localization to the actin patch of the synaptojanin-like protein, Sjl2p, which plays a key role in endocytosis. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212895 [Multi-domain]  Cd Length: 54  Bit Score: 53.26  E-value: 8.01e-10
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gi 1789691051 203 YDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQRtGRTGMLPANYIE 251
Cdd:cd11962     6 YDYEKDEDNEIELVEGEIVTNIEMVDEDWWMGTNSK-GESGLFPSNYVE 53
SH3_Bzz1_2 cd11778
Second Src Homology 3 domain of Bzz1 and similar domains; Bzz1 (or Bzz1p) is a WASP ...
198-249 8.30e-10

Second Src Homology 3 domain of Bzz1 and similar domains; Bzz1 (or Bzz1p) is a WASP/Las17-interacting protein involved in endocytosis and trafficking to the vacuole. It physically interacts with type I myosins and functions in the early steps of endocytosis. Together with other proteins, it induces membrane scission in yeast. Bzz1 contains an N-terminal F-BAR (FES-CIP4 Homology and Bin/Amphiphysin/Rvs), a central coiled-coil, and two C-terminal SH3 domains. This model represents the second C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212712 [Multi-domain]  Cd Length: 51  Bit Score: 53.27  E-value: 8.30e-10
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gi 1789691051 198 TYRAMYDYSAQDEDEVSFRDGDYIVNVQPID-DGWMYGTVQrtGRTGMLPANY 249
Cdd:cd11778     1 YVEALYDYEAQGDDEISIRVGDRIAVIRGDDgSGWTYGEIN--GVKGLFPTSY 51
SH3_UBASH3A cd11937
Src homology 3 domain of Ubiquitin-associated and SH3 domain-containing protein A; UBASH3A is ...
197-251 9.49e-10

Src homology 3 domain of Ubiquitin-associated and SH3 domain-containing protein A; UBASH3A is also called Cbl-Interacting Protein 4 (CLIP4), T cell Ubiquitin LigAnd (TULA), or T cell receptor Signaling (STS)-2. It is only found in lymphoid cells and exhibits weak phosphatase activity. UBASH3A facilitates T cell-induced apoptosis through interaction with the apoptosis-inducing factor AIF. It is involved in regulating the level of phosphorylation of the zeta-associated protein (ZAP)-70 tyrosine kinase. TULA proteins contain an N-terminal UBA domain, a central SH3 domain, and a C-terminal histidine phosphatase domain. They bind c-Cbl through the SH3 domain and to ubiquitin via UBA. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212870 [Multi-domain]  Cd Length: 60  Bit Score: 53.48  E-value: 9.49e-10
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gi 1789691051 197 RTYRAMYDYSAQDEDEVSFRDGDYIVnVQP-----IDDGWMYGTVQRTGRTGMLPANYIE 251
Cdd:cd11937     1 QTLRALFQYKPQNIDELMLSPGDYIF-VDPtqqseASEGWVIGISHRTGCRGFLPENYTE 59
SH3_Nck_2 cd11766
Second Src Homology 3 domain of Nck adaptor proteins; Nck adaptor proteins regulate actin ...
198-251 1.28e-09

Second Src Homology 3 domain of Nck adaptor proteins; Nck adaptor proteins regulate actin cytoskeleton dynamics by linking proline-rich effector molecules to protein tyrosine kinases and phosphorylated signaling intermediates. They contain three SH3 domains and a C-terminal SH2 domain. They function downstream of the PDGFbeta receptor and are involved in Rho GTPase signaling and actin dynamics. Vertebrates contain two Nck adaptor proteins: Nck1 (also called Nckalpha) and Nck2 (also called Nckbeta or Growth factor receptor-bound protein 4, Grb4), which show partly overlapping functions but also bind distinct targets. Their SH3 domains are involved in recruiting downstream effector molecules, such as the N-WASP/Arp2/3 complex, which when activated induces actin polymerization that results in the production of pedestals, or protrusions of the plasma membrane. The second SH3 domain of Nck appears to prefer ligands containing the APxxPxR motif. SH3 domains are protein interaction domains that usually bind to proline-rich ligands with moderate affinity and selectivity, preferentially a PxxP motif. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212700 [Multi-domain]  Cd Length: 53  Bit Score: 52.65  E-value: 1.28e-09
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gi 1789691051 198 TYRAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQrtGRTGMLPANYIE 251
Cdd:cd11766     1 PAVVKFNYEAQREDELSLRKGDRVLVLEKSSDGWWRGECN--GQVGWFPSNYVT 52
SH3_Sla1p_3 cd11775
Third Src Homology 3 domain of the fungal endocytic adaptor protein Sla1p; Sla1p facilitates ...
200-251 1.52e-09

Third Src Homology 3 domain of the fungal endocytic adaptor protein Sla1p; Sla1p facilitates endocytosis by playing a role as an adaptor protein in coupling components of the actin cytoskeleton to the endocytic machinery. It interacts with Abp1p, Las17p and Pan1p, which are activator proteins of actin-related protein 2/3 (Arp2/3). Sla1p contains multiple domains including three SH3 domains, a SAM (sterile alpha motif) domain, and a Sla1 homology domain 1 (SHD1), which binds to the NPFXD motif that is found in many integral membrane proteins such as the Golgi-localized Arf-binding protein Lsb5p and the P4-ATPases, Drs2p and Dnf1p. The third SH3 domain of Sla1p can bind ubiquitin while retaining the ability to bind proline-rich ligands; monoubiquitination of target proteins signals internalization and sorting through the endocytic pathway. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212709 [Multi-domain]  Cd Length: 57  Bit Score: 52.71  E-value: 1.52e-09
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gi 1789691051 200 RAMYDYSAQDEDEVSFRDGD--YIVNVQPIDDGWMygtVQR--TGRTGMLPANYIE 251
Cdd:cd11775     4 KVLYDFDAQSDDELTVKEGDvvYILDDKKSKDWWM---VENvsTGKEGVVPASYIE 56
SH3_Intersectin_5 cd11840
Fifth Src homology 3 domain (or SH3E) of Intersectin; Intersectins (ITSNs) are adaptor ...
200-251 2.08e-09

Fifth Src homology 3 domain (or SH3E) of Intersectin; Intersectins (ITSNs) are adaptor proteins that function in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. They are essential for initiating clathrin-coated pit formation. They bind to many proteins through their multidomain structure and facilitate the assembly of multimeric complexes. Vertebrates contain two ITSN proteins, ITSN1 and ITSN2, which exist in alternatively spliced short and long isoforms. The short isoforms contain two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoforms, in addition, contain RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. ITSN1 and ITSN2 are both widely expressed, with variations depending on tissue type and stage of development. The fifth SH3 domain (or SH3E) of ITSN1 has been shown to bind many protein partners including SGIP1, Sos1, dynamin1/2, CIN85, c-Cbl, SHIP2, N-WASP, and synaptojanin-1, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212774 [Multi-domain]  Cd Length: 53  Bit Score: 52.03  E-value: 2.08e-09
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gi 1789691051 200 RAMYDYSAQDEDEVSFRDGDyIVNVQPIDDG-WMYGTVQrtGRTGMLPANYIE 251
Cdd:cd11840     3 IALFPYTAQNEDELSFQKGD-IINVLSKDDPdWWRGELN--GQTGLFPSNYVE 52
SH3_p47phox_like cd11856
Src homology 3 domains of the p47phox subunit of NADPH oxidase and similar domains; This ...
198-251 2.11e-09

Src homology 3 domains of the p47phox subunit of NADPH oxidase and similar domains; This family is composed of the tandem SH3 domains of p47phox subunit of NADPH oxidase and Nox Organizing protein 1 (NoxO1), the four SH3 domains of Tks4 (Tyr kinase substrate with four SH3 domains), the five SH3 domains of Tks5, the SH3 domain of obscurin, Myosin-I, and similar domains. Most members of this group also contain Phox homology (PX) domains, except for obscurin and Myosin-I. p47phox and NoxO1 are regulators of the phagocytic NADPH oxidase complex (also called Nox2 or gp91phox) and nonphagocytic NADPH oxidase Nox1, respectively. They play roles in the activation of their respective NADPH oxidase, which catalyzes the transfer of electrons from NADPH to molecular oxygen to form superoxide. Tks proteins are Src substrates and scaffolding proteins that play important roles in the formation of podosomes and invadopodia, the dynamic actin-rich structures that are related to cell migration and cancer cell invasion. Obscurin is a giant muscle protein that plays important roles in the organization and assembly of the myofibril and the sarcoplasmic reticulum. Type I myosins (Myosin-I) are actin-dependent motors in endocytic actin structures and actin patches. They play roles in membrane traffic in endocytic and secretory pathways, cell motility, and mechanosensing. Myosin-I contains an N-terminal actin-activated ATPase, a phospholipid-binding TH1 (tail homology 1) domain, and a C-terminal extension which includes an F-actin-binding TH2 domain, an SH3 domain, and an acidic peptide that participates in activating the Arp2/3complex. The SH3 domain of myosin-I is required for myosin-I-induced actin polymerization. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212790 [Multi-domain]  Cd Length: 53  Bit Score: 52.25  E-value: 2.11e-09
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gi 1789691051 198 TYRAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYgtVQRTGRTGMLPANYIE 251
Cdd:cd11856     1 SYVAIADYEAQGDDEISLQEGEVVEVLEKNDSGWWY--VRKGDKEGWVPASYLE 52
SH3_GRB2_C cd11949
C-terminal Src homology 3 domain of Growth factor receptor-bound protein 2; GRB2 is a critical ...
198-251 2.24e-09

C-terminal Src homology 3 domain of Growth factor receptor-bound protein 2; GRB2 is a critical signaling molecule that regulates the Ras pathway by linking tyrosine kinases to the Ras guanine nucleotide releasing protein Sos (son of sevenless), which converts Ras to the active GTP-bound state. It is ubiquitously expressed in all tissues throughout development and is important in cell cycle progression, motility, morphogenesis, and angiogenesis. In lymphocytes, GRB2 is associated with antigen receptor signaling components. GRB2 contains an N-terminal SH3 domain, a central SH2 domain, and a C-terminal SH3 domain. The C-terminal SH3 domain of GRB2 binds to Gab2 (Grb2-associated binder 2) through epitopes containing RxxK motifs, as well as to the proline-rich C-terminus of FGRF2. SH3 domains are protein interaction domains that typically bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212882 [Multi-domain]  Cd Length: 53  Bit Score: 52.15  E-value: 2.24e-09
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gi 1789691051 198 TYRAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQrtGRTGMLPANYIE 251
Cdd:cd11949     1 YVQALFDFDPQEDGELGFRRGDFIEVMDNSDPNWWKGACH--GQTGMFPRNYVT 52
SH3_PEX13_eumet cd11864
Src Homology 3 domain of eumetazoan Peroxisomal biogenesis factor 13; PEX13 is a peroxin and ...
200-251 2.89e-09

Src Homology 3 domain of eumetazoan Peroxisomal biogenesis factor 13; PEX13 is a peroxin and is required for protein import into the peroxisomal matrix and membrane. It is an integral membrane protein that is essential for the localization of PEX14 and the import of proteins containing the peroxisome matrix targeting signals, PTS1 and PTS2. Mutations of the PEX13 gene in humans lead to a wide range of peroxisome biogenesis disorders (PBDs), the most severe of which is known as Zellweger syndrome (ZS), a severe multisystem disorder characterized by hypotonia, psychomotor retardation, and neuronal migration defects. PEX13 contains two transmembrane regions and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212798  Cd Length: 58  Bit Score: 51.86  E-value: 2.89e-09
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gi 1789691051 200 RAMYDYSAQDEDEVSFRDGDyIVNV-----QPIDDGWMYGTVQRTgRTGMLPANYIE 251
Cdd:cd11864     3 RAEYDFVAESEDELSFRAGD-KLRLapkelQPRVRGWLLATVDGQ-KIGLVPANYVK 57
SH3_MLK4 cd12058
Src Homology 3 domain of Mixed Lineage Kinase 4; MLK4 is a Serine/Threonine Kinase (STK), ...
199-250 2.99e-09

Src Homology 3 domain of Mixed Lineage Kinase 4; MLK4 is a Serine/Threonine Kinase (STK), catalyzing the transfer of the gamma-phosphoryl group from ATP to S/T residues on protein substrates. MLKs act as mitogen-activated protein kinase kinase kinases (MAP3Ks, MKKKs, MAPKKKs), which phosphorylate and activate MAPK kinases (MAPKKs or MKKs or MAP2Ks), which in turn phosphorylate and activate MAPKs during signaling cascades that are important in mediating cellular responses to extracellular signals. MLKs play roles in immunity and inflammation, as well as in cell death, proliferation, and cell cycle regulation. The specific function of MLK4 is yet to be determined. Mutations in the kinase domain of MLK4 have been detected in colorectal cancers. MLK4 contains an SH3 domain, a catalytic kinase domain, a leucine zipper, a proline-rich region, and a CRIB domain that mediates binding to GTP-bound Cdc42 and Rac. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212991 [Multi-domain]  Cd Length: 58  Bit Score: 51.87  E-value: 2.99e-09
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gi 1789691051 199 YRAMYDYSAQDEDEVSFRDGDyIVNVQPI------DDGWMYGTVQRtgRTGMLPANYI 250
Cdd:cd12058     2 WTALYDYEASGEDELSLRRGD-VVEVLSQdaavsgDDGWWAGKIRH--RLGIFPANYV 56
SH3_PLCgamma cd11825
Src homology 3 domain of Phospholipase C (PLC) gamma; PLC catalyzes the hydrolysis of ...
198-251 3.00e-09

Src homology 3 domain of Phospholipase C (PLC) gamma; PLC catalyzes the hydrolysis of phosphatidylinositol (4,5)-bisphosphate [PtdIns(4,5)P2] to produce Ins(1,4,5)P3 and diacylglycerol (DAG) in response to various receptors. Ins(1,4,5)P3 initiates the calcium signaling cascade while DAG functions as an activator of PKC. PLCgamma catalyzes this reaction in tyrosine kinase-dependent signaling pathways. It is activated and recruited to its substrate at the membrane. Vertebrates contain two forms of PLCgamma, PLCgamma1, which is widely expressed, and PLCgamma2, which is primarily found in haematopoietic cells. PLCgamma contains a Pleckstrin homology (PH) domain followed by an elongation factor (EF) domain, two catalytic regions of PLC domains that flank two tandem SH2 domains, followed by a SH3 domain and C2 domain. The SH3 domain of PLCgamma1 directly interacts with dynamin-1 and can serve as a guanine nucleotide exchange factor (GEF). It also interacts with Cbl, inhibiting its phosphorylation and activity. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212759 [Multi-domain]  Cd Length: 54  Bit Score: 51.56  E-value: 3.00e-09
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gi 1789691051 198 TYRAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWM---YGtvqrTGRTGMLPANYIE 251
Cdd:cd11825     1 TVKALYDYRAQRPDELSFCKHAIITNVEKEDGGWWrgdYG----GKKQKWFPANYVE 53
SH3_SH3RF1_3 cd11926
Third Src Homology 3 domain of SH3 domain containing ring finger 1, an E3 ubiquitin-protein ...
199-250 4.85e-09

Third Src Homology 3 domain of SH3 domain containing ring finger 1, an E3 ubiquitin-protein ligase; SH3RF1 is also called POSH (Plenty of SH3s) or SH3MD2 (SH3 multiple domains protein 2). It is a scaffold protein that acts as an E3 ubiquitin-protein ligase. It plays a role in calcium homeostasis through the control of the ubiquitin domain protein Herp. It may also have a role in regulating death receptor mediated and JNK mediated apoptosis. SH3RF1 also enhances the ubiquitination of ROMK1 potassium channel resulting in its increased endocytosis. It contains an N-terminal RING finger domain and four SH3 domains. This model represents the third SH3 domain, located in the middle, of SH3RF1. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212859 [Multi-domain]  Cd Length: 55  Bit Score: 51.12  E-value: 4.85e-09
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gi 1789691051 199 YRAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQRTGRTGMLPANYI 250
Cdd:cd11926     2 YVAIYPYTPRKEDELELRKGEMFLVFERCQDGWFKGTSMHTSKIGVFPGNYV 53
SH3_SH3RF_3 cd11783
Third Src Homology 3 domain of SH3 domain containing ring finger 1 (SH3RF1), SH3RF3, and ...
199-250 5.33e-09

Third Src Homology 3 domain of SH3 domain containing ring finger 1 (SH3RF1), SH3RF3, and similar domains; SH3RF1 (or POSH) and SH3RF3 (or POSH2) are scaffold proteins that function as E3 ubiquitin-protein ligases. They contain an N-terminal RING finger domain and four SH3 domains. This model represents the third SH3 domain, located in the middle of SH3RF1 and SH3RF3, and similar domains. SH3RF1 plays a role in calcium homeostasis through the control of the ubiquitin domain protein Herp. It may also have a role in regulating death receptor mediated and JNK mediated apoptosis. SH3RF3 interacts with p21-activated kinase 2 (PAK2) and GTP-loaded Rac1. It may play a role in regulating JNK mediated apoptosis in certain conditions. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212717 [Multi-domain]  Cd Length: 55  Bit Score: 51.24  E-value: 5.33e-09
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gi 1789691051 199 YRAMYDYSAQDEDEVSFRDGD-YIVnVQPIDDGWMYGTVQRTGRTGMLPANYI 250
Cdd:cd11783     2 YVALYPYKPQKPDELELRKGEmYTV-TEKCQDGWFKGTSLRTGQSGVFPGNYV 53
SH3_CIN85_1 cd12052
First Src Homology 3 domain (SH3A) of Cbl-interacting protein of 85 kDa; CIN85, also called ...
203-250 6.08e-09

First Src Homology 3 domain (SH3A) of Cbl-interacting protein of 85 kDa; CIN85, also called SH3 domain-containing kinase-binding protein 1 (SH3KBP1) or CD2-binding protein 3 (CD2BP3) or Ruk, is an adaptor protein that is involved in the downregulation of receptor tyrosine kinases by facilitating endocytosis through interaction with endophilin-associated ubiquitin ligase Cbl proteins. It is also important in many other cellular processes including vesicle-mediated transport, cytoskeletal remodelling, apoptosis, cell adhesion and migration, and viral infection, among others. CIN85 exists as multiple variants from alternative splicing; the main variant contains three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CIN85 to bind various protein partners and assemble complexes that have been implicated in many different functions. This alignment model represents the first SH3 domain (SH3A) of CIN85; SH3A binds to internal proline-rich motifs within the proline-rich region. This intramolecular interaction serves as a regulatory mechanism to keep CIN85 in a closed conformation, preventing the recruitment of other proteins. SH3A has also been shown to bind ubiquitin and to an atypical PXXXPR motif at the C-terminus of Cbl and the cytoplasmic end of the cell adhesion protein CD2. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212985 [Multi-domain]  Cd Length: 53  Bit Score: 51.05  E-value: 6.08e-09
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gi 1789691051 203 YDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQrtGRTGMLPANYI 250
Cdd:cd12052     6 FDYKAQHEDELTITVGDIITKIKKDDGGWWEGEIK--GRRGLFPDNFV 51
SH3_Eve1_4 cd11817
Fourth Src homology 3 domain of ADAM-binding protein Eve-1; Eve-1, also called SH3 ...
201-249 6.64e-09

Fourth Src homology 3 domain of ADAM-binding protein Eve-1; Eve-1, also called SH3 domain-containing protein 19 (SH3D19) or EEN-binding protein (EBP), exists in multiple alternatively spliced isoforms. The longest isoform contains five SH3 domain in the C-terminal region and seven proline-rich motifs in the N-terminal region. It is abundantly expressed in skeletal muscle and heart, and may be involved in regulating the activity of ADAMs (A disintegrin and metalloproteases). Eve-1 interacts with EEN, an endophilin involved in endocytosis and may be the target of the MLL-EEN fusion protein that is implicated in leukemogenesis. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212751 [Multi-domain]  Cd Length: 50  Bit Score: 50.55  E-value: 6.64e-09
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gi 1789691051 201 AMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQrtGRTGMLPANY 249
Cdd:cd11817     4 ALYDFTGETEEDLSFQRGDRILVTEHLDAEWSRGRLN--GREGIFPRAF 50
SH3_GRAF3 cd12066
Src Homology 3 domain of GTPase Regulator Associated with Focal adhesion kinase 3; GRAF3 is ...
200-253 7.44e-09

Src Homology 3 domain of GTPase Regulator Associated with Focal adhesion kinase 3; GRAF3 is also called Rho GTPase activating protein 42 (ARHGAP42) or ARHGAP10-like. Though its function has not been characterized, it may be a GAP with activity towards RhoA and Cdc42, based on its similarity to GRAF and GRAF2. It contains an N-terminal BAR domain, followed by a Pleckstrin homology (PH) domain, a Rho GAP domain, and a C-terminal SH3 domain. The SH3 domain of GRAF and GRAF2 binds PKNbeta, a target of the small GTPase Rho. SH3 domains bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs; they play a role in the regulation of enzymes by intramolecular interactions, changing the subcellular localization of signal pathway components and mediate multiprotein complex assemblies.


Pssm-ID: 212999  Cd Length: 55  Bit Score: 50.83  E-value: 7.44e-09
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gi 1789691051 200 RAMYDYSAQDEDEVSFRDGDYIVNVQP-IDDGWMYGTVQrtGRTGMLPANYIEFV 253
Cdd:cd12066     3 KAMYSCKAEHSHELSFPQGAIFSNVYPsVEPGWLKATYE--GKTGLVPENYVVFL 55
SH3_Bzz1_1 cd11912
First Src Homology 3 domain of Bzz1 and similar domains; Bzz1 (or Bzz1p) is a WASP ...
200-252 9.24e-09

First Src Homology 3 domain of Bzz1 and similar domains; Bzz1 (or Bzz1p) is a WASP/Las17-interacting protein involved in endocytosis and trafficking to the vacuole. It physically interacts with type I myosins and functions in the early steps of endocytosis. Together with other proteins, it induces membrane scission in yeast. Bzz1 contains an N-terminal F-BAR (FES-CIP4 Homology and Bin/Amphiphysin/Rvs), a central coiled-coil, and two C-terminal SH3 domains. This model represents the first C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212845 [Multi-domain]  Cd Length: 55  Bit Score: 50.30  E-value: 9.24e-09
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gi 1789691051 200 RAMYDYSAQDEDEVSFRDGDYIVNVQPiDD--GWmygTVQR--TGRTGMLPANYIEF 252
Cdd:cd11912     3 KVLYDYTASGDDEVSISEGEEVTVLEP-DDgsGW---TKVRngSGEEGLVPTSYIEI 55
SH3_RasGAP cd11788
Src Homology 3 domain of Ras GTPase-Activating Protein 1; RasGAP, also called Ras p21 protein ...
197-253 1.10e-08

Src Homology 3 domain of Ras GTPase-Activating Protein 1; RasGAP, also called Ras p21 protein activator, RASA1, or p120RasGAP, is part of the GAP1 family of GTPase-activating proteins. It is a 120kD cytosolic protein containing an SH3 domain flanked by two SH2 domains at the N-terminal end, a pleckstrin homology (PH) domain, a calcium dependent phospholipid binding domain (CaLB/C2), and a C-terminal catalytic GAP domain. It stimulates the GTPase activity of normal RAS p21. It acts as a positive effector of Ras in tumor cells. It also functions as a regulator downstream of tyrosine receptors such as those of PDGF, EGF, ephrin, and insulin, among others. The SH3 domain of RasGAP is unable to bind proline-rich sequences but have been shown to interact with protein partners such as the G3BP protein, Aurora kinases, and the Calpain small subunit 1. The RasGAP SH3 domain is necessary for the downstream signaling of Ras and it also influences Rho-mediated cytoskeletal reorganization. SH3 domains are protein interaction domains that typically bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212722  Cd Length: 59  Bit Score: 50.45  E-value: 1.10e-08
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                  ....*....|....*....|....*....|....*....|....*....|....*...
gi 1789691051 197 RTYRAMYDYSA-QDEDEVSFRDGDYIVNVQPIDDGWMYGTVQRTGRTGMLPANYIEFV 253
Cdd:cd11788     2 RRVRAILPYNKvPDTDELSFQKGDIFVVHNELEDGWLWVTSLRTGESGLVFRDLVEEL 59
SH3_Abi2 cd11972
Src homology 3 domain of Abl Interactor 2; Abi2 is highly expressed in the brain and eye. It ...
201-253 1.11e-08

Src homology 3 domain of Abl Interactor 2; Abi2 is highly expressed in the brain and eye. It regulates actin cytoskeletal reorganization at adherens junctions and dendritic spines, which is important in cell morphogenesis, migration, and cognitive function. Mice deficient with Abi2 show defects in orientation and migration of lens fibers, neuronal migration, dendritic spine morphology, as well as deficits in learning and memory. Abi proteins are adaptor proteins serving as binding partners and substrates of Abl tyrosine kinases. They are involved in regulating actin cytoskeletal reorganization and play important roles in membrane-ruffling, endocytosis, cell motility, and cell migration. Abi proteins contain a homeobox homology domain, a proline-rich region, and a SH3 domain. The SH3 domain of Abi binds to a PxxP motif in Abl. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212905 [Multi-domain]  Cd Length: 61  Bit Score: 50.39  E-value: 1.11e-08
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|...
gi 1789691051 201 AMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQrtGRTGMLPANYIEFV 253
Cdd:cd11972     7 AIYDYTKDKEDELSFQEGAIIYVIKKNDDGWYEGVMN--GVTGLFPGNYVESI 57
SH3_SH3RF_1 cd11786
First Src Homology 3 domain of SH3 domain containing ring finger proteins; This model ...
200-251 1.20e-08

First Src Homology 3 domain of SH3 domain containing ring finger proteins; This model represents the first SH3 domain of SH3RF1 (or POSH), SH3RF2 (or POSHER), SH3RF3 (POSH2), and similar domains. Members of this family are scaffold proteins that function as E3 ubiquitin-protein ligases. They all contain an N-terminal RING finger domain and multiple SH3 domains; SH3RF1 and SH3RF3 have four SH3 domains while SH3RF2 has three. SH3RF1 plays a role in calcium homeostasis through the control of the ubiquitin domain protein Herp. It may also have a role in regulating death receptor mediated and JNK mediated apoptosis. SH3RF3 interacts with p21-activated kinase 2 (PAK2) and GTP-loaded Rac1. It may play a role in regulating JNK mediated apoptosis in certain conditions. SH3RF2 acts as an anti-apoptotic regulator of the JNK pathway by binding to and promoting the degradation of SH3RF1. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212720 [Multi-domain]  Cd Length: 53  Bit Score: 50.05  E-value: 1.20e-08
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|..
gi 1789691051 200 RAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQrtGRTGMLPANYIE 251
Cdd:cd11786     3 KALYNYEGKEPGDLSFKKGDIILLRKRIDENWYHGECN--GKQGFFPASYVQ 52
SH3_ASAP cd11821
Src homology 3 domain of ArfGAP with SH3 domain, ankyrin repeat and PH domain containing ...
200-249 1.33e-08

Src homology 3 domain of ArfGAP with SH3 domain, ankyrin repeat and PH domain containing proteins; ASAPs are Arf GTPase activating proteins (GAPs) and they function in regulating cell growth, migration, and invasion. They contain an N-terminal BAR domain, followed by a Pleckstrin homology (PH) domain, an Arf GAP domain, ankyrin (ANK) repeats, and a C-terminal SH3 domain. Vertebrates contain at least three members, ASAP1, ASAP2, and ASAP3, but some ASAP3 proteins do not seem to harbor a C-terminal SH3 domain. ASAP1 and ASAP2 show GTPase activating protein (GAP) activity towards Arf1 and Arf5. They do not show GAP activity towards Arf6, but are able to mediate Arf6 signaling by binding stably to GTP-Arf6. ASAP3 is an Arf6-specific GAP. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212755 [Multi-domain]  Cd Length: 53  Bit Score: 50.01  E-value: 1.33e-08
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|.
gi 1789691051 200 RAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQRT-GRTGMLPANY 249
Cdd:cd11821     3 RALYDCQADNDDELTFSEGEIIVVTGEEDDEWWEGHIEGDpSRRGVFPVSF 53
SH3_Sorbs_1 cd11781
First Src Homology 3 domain of Sorbin and SH3 domain containing (Sorbs) proteins and similar ...
200-251 1.40e-08

First Src Homology 3 domain of Sorbin and SH3 domain containing (Sorbs) proteins and similar domains; This family, also called the vinexin family, is composed predominantly of adaptor proteins containing one sorbin homology (SoHo) and three SH3 domains. Members include the first SH3 domains of Sorbs1 (or ponsin), Sorbs2 (or ArgBP2), Vinexin (or Sorbs3), and similar domains. They are involved in the regulation of cytoskeletal organization, cell adhesion, and growth factor signaling. Members of this family bind multiple partners including signaling molecules like c-Abl, c-Arg, Sos, and c-Cbl, as well as cytoskeletal molecules such as vinculin and afadin. They may have overlapping functions. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212715 [Multi-domain]  Cd Length: 53  Bit Score: 50.03  E-value: 1.40e-08
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|..
gi 1789691051 200 RAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGtvQRTGRTGMLPANYIE 251
Cdd:cd11781     3 RALYPFKAQSAKELSLKKGDIIYIRRQIDKNWYEG--EHNGRVGIFPASYVE 52
SH3_GRAF cd12064
Src Homology 3 domain of GTPase Regulator Associated with Focal adhesion kinase; GRAF, also ...
197-253 1.69e-08

Src Homology 3 domain of GTPase Regulator Associated with Focal adhesion kinase; GRAF, also called Rho GTPase activating protein 26 (ARHGAP26), Oligophrenin-1-like (OPHN1L) or GRAF1, is a GAP with activity towards RhoA and Cdc42 and is only weakly active towards Rac1. It influences Rho-mediated cytoskeletal rearrangements and binds focal adhesion kinase (FAK), which is a critical component of integrin signaling. It is essential for the major clathrin-independent endocytic pathway mediated by pleiomorphic membranes. GRAF contains an N-terminal BAR domain, followed by a Pleckstrin homology (PH) domain, a Rho GAP domain, and a C-terminal SH3 domain. The SH3 domain of GRAF binds PKNbeta, a target of the small GTPase Rho. SH3 domains bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs; they play a role in the regulation of enzymes by intramolecular interactions, changing the subcellular localization of signal pathway components and mediate multiprotein complex assemblies.


Pssm-ID: 212997  Cd Length: 56  Bit Score: 49.73  E-value: 1.69e-08
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....*...
gi 1789691051 197 RTYRAMYDYSAQDEDEVSFRDGDYIVNVQPIDD-GWMYGTVQrtGRTGMLPANYIEFV 253
Cdd:cd12064     1 RKAKALYACKAEHDSELSFTAGTVFDNVHPSQEpGWLEGTLN--GKTGLIPENYVEFL 56
SH3_Src_like cd11845
Src homology 3 domain of Src kinase-like Protein Tyrosine Kinases; Src subfamily members ...
198-249 2.21e-08

Src homology 3 domain of Src kinase-like Protein Tyrosine Kinases; Src subfamily members include Src, Lck, Hck, Blk, Lyn, Fgr, Fyn, Yrk, Yes, and Brk. Src (or c-Src) proteins are cytoplasmic (or non-receptor) PTKs which are anchored to the plasma membrane. They contain an N-terminal SH4 domain with a myristoylation site, followed by SH3 and SH2 domains, a tyr kinase domain, and a regulatory C-terminal region containing a conserved tyr. They are activated by autophosphorylation at the tyr kinase domain, but are negatively regulated by phosphorylation at the C-terminal tyr by Csk (C-terminal Src Kinase). However, Brk lacks the N-terminal myristoylation sites. Src proteins are involved in signaling pathways that regulate cytokine and growth factor responses, cytoskeleton dynamics, cell proliferation, survival, and differentiation. They were identified as the first proto-oncogene products, and they regulate cell adhesion, invasion, and motility in cancer cells, and tumor vasculature, contributing to cancer progression and metastasis. Src kinases are overexpressed in a variety of human cancers, making them attractive targets for therapy. They are also implicated in acute inflammatory responses and osteoclast function. Src, Fyn, Yes, and Yrk are widely expressed, while Blk, Lck, Hck, Fgr, Lyn, and Brk show a limited expression pattern. This subfamily also includes Drosophila Src42A, Src oncogene at 42A (also known as Dsrc41) which accumulates at sites of cell-cell or cell-matrix adhesion, and participates in Drosphila development and wound healing. It has been shown to promote tube elongation in the tracheal system, is essential for proper cell-cell matching during dorsal closure, and regulates cell-cell contacts in developing Drosophila eyes. The SH3 domain of Src kinases contributes to substrate recruitment by binding adaptor proteins/substrates, and regulation of kinase activity through an intramolecular interaction. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212779 [Multi-domain]  Cd Length: 52  Bit Score: 49.12  E-value: 2.21e-08
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|..
gi 1789691051 198 TYRAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQRTGRTGMLPANY 249
Cdd:cd11845     1 IYVALYDYEARTDDDLSFKKGDRLQILDDSDGDWWLARHLSTGKEGYIPSNY 52
SH3_GRB2_like_N cd11804
N-terminal Src homology 3 domain of Growth factor receptor-bound protein 2 (GRB2) and related ...
200-250 3.58e-08

N-terminal Src homology 3 domain of Growth factor receptor-bound protein 2 (GRB2) and related proteins; This family includes the adaptor protein GRB2 and related proteins including Drosophila melanogaster Downstream of receptor kinase (DRK), Caenorhabditis elegans Sex muscle abnormal protein 5 (Sem-5), GRB2-related adaptor protein (GRAP), GRAP2, and similar proteins. Family members contain an N-terminal SH3 domain, a central SH2 domain, and a C-terminal SH3 domain. GRB2/Sem-5/DRK is a critical signaling molecule that regulates the Ras pathway by linking tyrosine kinases to the Ras guanine nucleotide releasing protein Sos (son of sevenless), which converts Ras to the active GTP-bound state. GRAP2 plays an important role in T cell receptor (TCR) signaling by promoting the formation of the SLP-76:LAT complex, which couples the TCR to the Ras pathway. GRAP acts as a negative regulator of T cell receptor (TCR)-induced lymphocyte proliferation by downregulating the signaling to the Ras/ERK pathway. The N-terminal SH3 domain of GRB2 binds to Sos and Sos-derived proline-rich peptides. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212738 [Multi-domain]  Cd Length: 52  Bit Score: 48.89  E-value: 3.58e-08
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|.
gi 1789691051 200 RAMYDYSAQDEDEVSFRDGDyIVNVQPIDDGWMYGTVQRTGRTGMLPANYI 250
Cdd:cd11804     3 VAKHDFKATAEDELSFKKGS-ILKVLNMEDDPNWYKAELDGKEGLIPKNYI 52
LIM_Mical_like cd09358
The LIM domain of Mical (molecule interacting with CasL) like family; The LIM domain of Mical ...
8-41 3.90e-08

The LIM domain of Mical (molecule interacting with CasL) like family; The LIM domain of Mical (molecule interacting with CasL) like family: Known members of this family includes LIM domain containing proteins; Mical (molecule interacting with CasL), pollen specific protein SF3, Eplin, xin actin-binding repeat-containing protein 2 (XIRP2) and Ltd-1. The members of this family function mainly at the cytoskeleton and focal adhesions. They interact with transcription factors or other signaling molecules to play roles in muscle development, neuronal differentiation, cell growth and mobility. Eplin has also found to be tumor suppressor. As in other LIM domains, this domain family is 50-60 amino acids in size and shares two characteristic zinc finger motifs.. The two zinc fingers contain eight conserved residues, mostly cysteines and histidines, which coordinately bond to two zinc atoms. LIM domains function as adaptors or scaffolds to support the assembly of multimeric protein.


Pssm-ID: 188744 [Multi-domain]  Cd Length: 53  Bit Score: 48.80  E-value: 3.90e-08
                          10        20        30
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gi 1789691051   8 YWHKGCFHCEVCKMALNMNNYKGYEKKPYCNAHY 41
Cdd:cd09358    20 LFHKSCFRCSHCNKTLRLGNYASLEGKLYCKPHF 53
SH3_SH3RF3_3 cd11925
Third Src Homology 3 domain of SH3 domain containing ring finger 3, an E3 ubiquitin-protein ...
199-250 4.49e-08

Third Src Homology 3 domain of SH3 domain containing ring finger 3, an E3 ubiquitin-protein ligase; SH3RF3 is also called POSH2 (Plenty of SH3s 2) or SH3MD4 (SH3 multiple domains protein 4). It is a scaffold protein with E3 ubiquitin-protein ligase activity. It was identified in the screen for interacting partners of p21-activated kinase 2 (PAK2). It may play a role in regulating JNK mediated apoptosis in certain conditions. It also interacts with GTP-loaded Rac1. SH3RF3 is highly homologous to SH3RF1; it also contains an N-terminal RING finger domain and four SH3 domains. This model represents the third SH3 domain, located in the middle, of SH3RF3. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212858  Cd Length: 57  Bit Score: 48.45  E-value: 4.49e-08
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|..
gi 1789691051 199 YRAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQRTGRTGMLPANYI 250
Cdd:cd11925     3 YLALYAYKPQKNDELELRKGEMYRVIEKCQDGWFKGTSLRTGVSGVFPGNYV 54
SH3_Abi1 cd11971
Src homology 3 domain of Abl Interactor 1; Abi1, also called e3B1, is a central regulator of ...
201-253 5.17e-08

Src homology 3 domain of Abl Interactor 1; Abi1, also called e3B1, is a central regulator of actin cytoskeletal reorganization through interactions with many protein complexes. It is part of WAVE, a nucleation-promoting factor complex, that links Rac 1 activation to actin polymerization causing lamellipodia protrusion at the plasma membrane. Abi1 interact with formins to promote protrusions at the leading edge of motile cells. It also is a target of alpha4 integrin, regulating membrane protrusions at sites of integrin engagement. Abi proteins are adaptor proteins serving as binding partners and substrates of Abl tyrosine kinases. They are involved in regulating actin cytoskeletal reorganization and play important roles in membrane-ruffling, endocytosis, cell motility, and cell migration. Abi proteins contain a homeobox homology domain, a proline-rich region, and a SH3 domain. The SH3 domain of Abi binds to a PxxP motif in Abl. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212904 [Multi-domain]  Cd Length: 59  Bit Score: 48.48  E-value: 5.17e-08
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|...
gi 1789691051 201 AMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQRTgrTGMLPANYIEFV 253
Cdd:cd11971     4 AIYDYSKDKDDELSFMEGAIIYVIKKNDDGWYEGVCNGV--TGLFPGNYVESI 54
SH3_betaPIX cd12061
Src Homology 3 domain of beta-Pak Interactive eXchange factor; Beta-PIX, also called Rho ...
200-253 6.00e-08

Src Homology 3 domain of beta-Pak Interactive eXchange factor; Beta-PIX, also called Rho guanine nucleotide exchange factor 7 (ARHGEF7) or Cool (Cloned out of Library)-1, activates small GTPases by exchanging bound GDP for free GTP. It acts as a GEF for both Cdc42 and Rac 1, and plays important roles in regulating neuroendocrine exocytosis, focal adhesion maturation, cell migration, synaptic vesicle localization, and insulin secretion. PIX proteins contain an N-terminal SH3 domain followed by RhoGEF (also called Dbl-homologous or DH) and Pleckstrin Homology (PH) domains, and a C-terminal leucine-zipper domain for dimerization. The SH3 domain of PIX binds to an atypical PxxxPR motif in p21-activated kinases (PAKs) with high affinity. The binding of PAKs to PIX facilitate the localization of PAKs to focal complexes and also localizes PAKs to PIX targets Cdc43 and Rac, leading to the activation of PAKs. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212994 [Multi-domain]  Cd Length: 54  Bit Score: 48.14  E-value: 6.00e-08
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....
gi 1789691051 200 RAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVqrTGRTGMLPANYIEFV 253
Cdd:cd12061     3 RAKFNFQQTNEDELSFSKGDVIHVTRVEEGGWWEGTH--NGRTGWFPSNYVREI 54
SH3_Intersectin1_1 cd11987
First Src homology 3 domain (or SH3A) of Intersectin-1; Intersectin-1 (ITSN1) is an adaptor ...
199-251 6.58e-08

First Src homology 3 domain (or SH3A) of Intersectin-1; Intersectin-1 (ITSN1) is an adaptor protein that functions in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. It plays a role in clathrin-coated pit (CCP) formation. It binds to many proteins through its multidomain structure and facilitate the assembly of multimeric complexes. ITSN1 localizes in membranous organelles, CCPs, the Golgi complex, and may be involved in the cell membrane trafficking system. It exists in alternatively spliced short and long isoforms. The short isoform contains two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoform, in addition, contains RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. The first SH3 domain (or SH3A) of ITSN1 has been shown to bind many proteins including Sos1, dynamin1/2, CIN85, c-Cbl, PI3K-C2, SHIP2, N-WASP, and CdGAP, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212920 [Multi-domain]  Cd Length: 55  Bit Score: 48.07  E-value: 6.58e-08
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....*
gi 1789691051 199 YRAMYDYSAQDEDEVSFRDGDYIV--NVQPIDDGWMYGTVQrtGRTGMLPANYIE 251
Cdd:cd11987     2 YRALYPFEARSHDEITIQPGDIVMvdESQTGEPGWLGGELK--GKTGWFPANYAE 54
SH3_DNMBP_N3 cd11796
Third N-terminal Src homology 3 domain of Dynamin Binding Protein, also called Tuba; DNMBP or ...
200-250 6.66e-08

Third N-terminal Src homology 3 domain of Dynamin Binding Protein, also called Tuba; DNMBP or Tuba is a cdc42-specific guanine nucleotide exchange factor (GEF) that contains four N-terminal SH3 domains, a central RhoGEF [or Dbl homology (DH)] domain followed by a Bin/Amphiphysin/Rvs (BAR) domain, and two C-terminal SH3 domains. It provides a functional link between dynamin and key regulatory proteins of the actin cytoskeleton. It plays an important role in regulating cell junction configuration. The four N-terminal SH3 domains of DNMBP binds the GTPase dynamin, which plays an important role in the fission of endocytic vesicles. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212730  Cd Length: 51  Bit Score: 48.12  E-value: 6.66e-08
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|.
gi 1789691051 200 RAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQrtGRTGMLPANYI 250
Cdd:cd11796     3 RVLQDLSAQLDEELDLREGDVVTITGILDKGWFRGELN--GRRGIFPEGFV 51
SH3_D21-like cd12142
Src Homology 3 domain of SH3 domain-containing protein 21 (SH3D21) and similar proteins; ...
199-251 7.47e-08

Src Homology 3 domain of SH3 domain-containing protein 21 (SH3D21) and similar proteins; N-terminal SH3 domain of the uncharacterized protein SH3 domain-containing protein 21, and similar uncharacterized domains, it belongs to the CD2AP-like_3 subfamily of proteins. The CD2AP-like_3 subfamily is composed of the third SH3 domain (SH3C) of CD2AP, CIN85 (Cbl-interacting protein of 85 kDa), and similar domains. CD2AP and CIN85 are adaptor proteins that bind to protein partners and assemble complexes that have been implicated in T cell activation, kidney function, and apoptosis of neuronal cells. They also associate with endocytic proteins, actin cytoskeleton components, and other adaptor proteins involved in receptor tyrosine kinase (RTK) signaling. CD2AP and the main isoform of CIN85 contain three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CD2AP and CIN85 to bind various protein partners and assemble complexes that have been implicated in many different functions. SH3C of both proteins have been shown to bind to ubiquitin. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 213018 [Multi-domain]  Cd Length: 55  Bit Score: 47.85  E-value: 7.47e-08
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....*
gi 1789691051 199 YRAMYDYSAQDEDEVSFRDGDYI--VNVQPIDDGWMYGTVQrtGRTGMLPANYIE 251
Cdd:cd12142     2 CRVLFDYNPVAPDELALKKGDVIevISKETEDEGWWEGELN--GRRGFFPDNFVM 54
SH3_CD2AP_1 cd12053
First Src Homology 3 domain (SH3A) of CD2-associated protein; CD2AP, also called CMS (Cas ...
199-253 8.47e-08

First Src Homology 3 domain (SH3A) of CD2-associated protein; CD2AP, also called CMS (Cas ligand with Multiple SH3 domains) or METS1 (Mesenchyme-to-Epithelium Transition protein with SH3 domains), is a cytosolic adaptor protein that plays a role in regulating the cytoskeleton. It is critical in cell-to-cell union necessary for kidney function. It also stabilizes the contact between a T cell and antigen-presenting cells. It is primarily expressed in podocytes at the cytoplasmic face of the slit diaphragm and serves as a linker anchoring podocin and nephrin to the actin cytoskeleton. CD2AP contains three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CD2AP to bind various protein partners and assemble complexes that have been implicated in many different functions. This alignment model represents the first SH3 domain (SH3A) of CD2AP. SH3A binds to the PXXXPR motif present in c-Cbl and the cytoplasmic domain of cell adhesion protein CD2. Its interaction with CD2 anchors CD2 at sites of cell contact. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212986  Cd Length: 56  Bit Score: 47.91  E-value: 8.47e-08
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....*.
gi 1789691051 199 YRAMYDYSAQDEDEVSFRDGDYIVNVQPI-DDGWMYGTVQrtGRTGMLPANYIEFV 253
Cdd:cd12053     2 YIVEYDYDAVHEDELTIRVGEIIRNVKKLeEEGWLEGELN--GRRGMFPDNFVKEI 55
SH3_Sorbs_2 cd11782
Second Src Homology 3 domain of Sorbin and SH3 domain containing (Sorbs) proteins and similar ...
200-251 9.35e-08

Second Src Homology 3 domain of Sorbin and SH3 domain containing (Sorbs) proteins and similar domains; This family, also called the vinexin family, is composed predominantly of adaptor proteins containing one sorbin homology (SoHo) and three SH3 domains. Members include the second SH3 domains of Sorbs1 (or ponsin), Sorbs2 (or ArgBP2), Vinexin (or Sorbs3), and similar domains. They are involved in the regulation of cytoskeletal organization, cell adhesion, and growth factor signaling. Members of this family bind multiple partners including signaling molecules like c-Abl, c-Arg, Sos, and c-Cbl, as well as cytoskeletal molecules such as vinculin and afadin. They may have overlapping functions. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212716 [Multi-domain]  Cd Length: 53  Bit Score: 47.73  E-value: 9.35e-08
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|..
gi 1789691051 200 RAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVqrTGRTGMLPANYIE 251
Cdd:cd11782     3 RAKYNFNADTGVELSFRKGDVITLTRRVDENWYEGRI--GGRQGIFPVSYVQ 52
NEBU smart00227
The Nebulin repeat is present also in Las1; Tandem arrays of these repeats are known to bind ...
82-112 9.36e-08

The Nebulin repeat is present also in Las1; Tandem arrays of these repeats are known to bind actin.


Pssm-ID: 128523  Cd Length: 31  Bit Score: 47.08  E-value: 9.36e-08
                           10        20        30
                   ....*....|....*....|....*....|.
gi 1789691051   82 FSIVTDTPELQRLKRTQEQISNVKYHEDFEK 112
Cdd:smart00227   1 YTSVPDTPEILLAKKNQKLISDVKYKEDYEK 31
Nebulin pfam00880
Nebulin repeat;
87-114 1.02e-07

Nebulin repeat;


Pssm-ID: 459977  Cd Length: 28  Bit Score: 47.00  E-value: 1.02e-07
                          10        20
                  ....*....|....*....|....*...
gi 1789691051  87 DTPELQRLKRTQEQISNVKYHEDFEKTK 114
Cdd:pfam00880   1 DTPEIVHAKKNAKLQSDVKYKEDYEKEK 28
SH3_Intersectin2_5 cd11996
Fifth Src homology 3 domain (or SH3E) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor ...
201-251 1.08e-07

Fifth Src homology 3 domain (or SH3E) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor protein that functions in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. It plays a role in clathrin-coated pit (CCP) formation. It binds to many proteins through its multidomain structure and facilitate the assembly of multimeric complexes. ITSN2 also functions as a specific GEF for Cdc42 activation in epithelial morphogenesis, and is required in mitotic spindle orientation. It exists in alternatively spliced short and long isoforms. The short isoform contains two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoform, in addition, contains RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. The fifth SH3 domain (or SH3E) of ITSN2 is expected to bind protein partners, similar to ITSN1 which has been shown to bind many protein partners including SGIP1, Sos1, dynamin1/2, CIN85, c-Cbl, SHIP2, N-WASP, and synaptojanin-1, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212929 [Multi-domain]  Cd Length: 54  Bit Score: 47.67  E-value: 1.08e-07
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|..
gi 1789691051 201 AMYDYSAQDEDEVSFRDGDyIVNVQPIDD-GWMYGTVQrtGRTGMLPANYIE 251
Cdd:cd11996     5 AMYDYTANNEDELSFSKGQ-LINVLNKDDpDWWQGEIN--GVTGLFPSNYVK 53
SH3_MLK cd11876
Src Homology 3 domain of Mixed Lineage Kinases; MLKs are Serine/Threonine Kinases (STKs), ...
198-250 1.11e-07

Src Homology 3 domain of Mixed Lineage Kinases; MLKs are Serine/Threonine Kinases (STKs), catalyzing the transfer of the gamma-phosphoryl group from ATP to S/T residues on protein substrates. MLKs act as mitogen-activated protein kinase kinase kinases (MAP3Ks, MKKKs, MAPKKKs), which phosphorylate and activate MAPK kinases (MAPKKs or MKKs or MAP2Ks), which in turn phosphorylate and activate MAPKs during signaling cascades that are important in mediating cellular responses to extracellular signals. MLKs play roles in immunity and inflammation, as well as in cell death, proliferation, and cell cycle regulation. Mammals have four MLKs (MLK1-4), mostly conserved in vertebrates, which contain an SH3 domain, a catalytic kinase domain, a leucine zipper, a proline-rich region, and a CRIB domain that mediates binding to GTP-bound Cdc42 and Rac. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212809 [Multi-domain]  Cd Length: 58  Bit Score: 47.51  E-value: 1.11e-07
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....*...
gi 1789691051 198 TYRAMYDYSAQDEDEVSFRDGDYIVNVQPI-----DDGWMYGTVQRtgRTGMLPANYI 250
Cdd:cd11876     1 LWTALFDYDARGEDELTLRRGQPVEVLSKDaavsgDEGWWTGKIGD--KVGIFPSNYV 56
SH3_Intersectin2_1 cd11988
First Src homology 3 domain (or SH3A) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor ...
196-251 1.23e-07

First Src homology 3 domain (or SH3A) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor protein that functions in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. It plays a role in clathrin-coated pit (CCP) formation. It binds to many proteins through its multidomain structure and facilitate the assembly of multimeric complexes. ITSN2 also functions as a specific GEF for Cdc42 activation in epithelial morphogenesis, and is required in mitotic spindle orientation. It exists in alternatively spliced short and long isoforms. The short isoform contains two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoform, in addition, contains RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. The first SH3 domain (or SH3A) of ITSN2 is expected to bind many protein partners, similar to ITSN1 which has been shown to bind Sos1, dynamin1/2, CIN85, c-Cbl, PI3K-C2, SHIP2, N-WASP, and CdGAP, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212921 [Multi-domain]  Cd Length: 57  Bit Score: 47.56  E-value: 1.23e-07
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....*...
gi 1789691051 196 LRTYRAMYDYSAQDEDEVSFRDGDYI-VNVQPI-DDGWMYGTVQrtGRTGMLPANYIE 251
Cdd:cd11988     1 LVNYRALYPFEARNHDEMSFNAGDIIqVDEKTVgEPGWLYGSFQ--GNFGWFPCNYVE 56
SH3_Vinexin_2 cd11924
Second Src Homology 3 domain of Vinexin, also called Sorbin and SH3 domain containing 3 ...
201-251 1.26e-07

Second Src Homology 3 domain of Vinexin, also called Sorbin and SH3 domain containing 3 (Sorbs3); Vinexin is also called Sorbs3, SH3P3, and SH3-containing adapter molecule 1 (SCAM-1). It is an adaptor protein containing one sorbin homology (SoHo) and three SH3 domains. Vinexin was first identified as a vinculin binding protein; it is co-localized with vinculin at cell-ECM and cell-cell adhesion sites. There are several splice variants of vinexin: alpha, which contains the SoHo and three SH3 domains and displays tissue-specific expression; and beta, which contains only the three SH3 domains and is widely expressed. Vinexin alpha stimulates the accumulation of F-actin at focal contact sites. Vinexin also promotes keratinocyte migration and wound healing. The SH3 domains of vinexin have been reported to bind a number of ligands including vinculin, WAVE2, DLG5, Abl, and Cbl. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212857  Cd Length: 56  Bit Score: 47.27  E-value: 1.26e-07
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|.
gi 1789691051 201 AMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQRTGRTGMLPANYIE 251
Cdd:cd11924     5 AQYTFKGDLEVELSFRKGEHICLIRKVNENWYEGRITGTGRQGIFPASYVQ 55
SH3_FCHSD_2 cd11762
Second Src Homology 3 domain of FCH and double SH3 domains proteins; This group is composed of ...
200-251 1.37e-07

Second Src Homology 3 domain of FCH and double SH3 domains proteins; This group is composed of FCH and double SH3 domains protein 1 (FCHSD1) and FCHSD2. These proteins have a common domain structure consisting of an N-terminal F-BAR (FES-CIP4 Homology and Bin/Amphiphysin/Rvs), two SH3, and C-terminal proline-rich domains. They have only been characterized in silico and their functions remain unknown. This group also includes the insect protein, nervous wreck, which acts as a regulator of synaptic growth signaling. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212696 [Multi-domain]  Cd Length: 57  Bit Score: 47.39  E-value: 1.37e-07
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....*..
gi 1789691051 200 RAMYDYSAQDEDEVSFRDGDyIVNVQP-----IDDGWMYGtvQRTGRTGMLPANYIE 251
Cdd:cd11762     3 RALYDYEAQSDEELSFPEGA-IIRILRkddngVDDGWWEG--EFNGRVGVFPSLVVE 56
SH3_Sorbs2_1 cd11920
First Src Homology 3 domain of Sorbin and SH3 domain containing 2 (Sorbs2), also called ...
200-251 1.70e-07

First Src Homology 3 domain of Sorbin and SH3 domain containing 2 (Sorbs2), also called Arg-binding protein 2 (ArgBP2); Sorbs2 or ArgBP2 is an adaptor protein containing one sorbin homology (SoHo) and three SH3 domains. It regulates actin-dependent processes including cell adhesion, morphology, and migration. It is expressed in many tissues and is abundant in the heart. Like vinexin, it is found in focal adhesion where it interacts with vinculin and afadin. It also localizes in epithelial cell stress fibers and in cardiac muscle cell Z-discs. Sorbs2 has been implicated to play roles in the signaling of c-Arg, Akt, and Pyk2. Other interaction partners of Sorbs2 include c-Abl, flotillin, spectrin, dynamin 1/2, synaptojanin, PTP-PEST, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212853 [Multi-domain]  Cd Length: 55  Bit Score: 46.93  E-value: 1.70e-07
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|..
gi 1789691051 200 RAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGtvQRTGRTGMLPANYIE 251
Cdd:cd11920     4 RAVYDFKAQTSKELSFKKGDTVYILRKIDQNWYEG--EHHGRVGIFPISYVE 53
SH3_Stac_1 cd11833
First C-terminal Src homology 3 domain of SH3 and cysteine-rich domain-containing (Stac) ...
198-250 1.93e-07

First C-terminal Src homology 3 domain of SH3 and cysteine-rich domain-containing (Stac) proteins; Stac proteins are putative adaptor proteins that contain a cysteine-rich C1 domain and one or two SH3 domains at the C-terminus. There are three mammalian members (Stac1, Stac2, and Stac3) of this family. Stac1 and Stac3 contain two SH3 domains while Stac2 contains a single SH3 domain at the C-terminus. This model represents the first C-terminal SH3 domain of Stac1 and Stac3, and the single C-terminal SH3 domain of Stac2. Stac1 and Stac2 have been found to be expressed differently in mature dorsal root ganglia (DRG) neurons. Stac1 is mainly expressed in peptidergic neurons while Stac2 is found in a subset of nonpeptidergic and all trkB+ neurons. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212767 [Multi-domain]  Cd Length: 53  Bit Score: 46.73  E-value: 1.93e-07
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|...
gi 1789691051 198 TYRAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQRtgRTGMLPANYI 250
Cdd:cd11833     1 TYVALYKFKPQENEDLEMRPGDKITLLDDSNEDWWKGKIED--RVGFFPANFV 51
SH3_CSK cd11769
Src Homology 3 domain of C-terminal Src kinase; CSK is a cytoplasmic (or nonreceptor) tyr ...
201-251 2.09e-07

Src Homology 3 domain of C-terminal Src kinase; CSK is a cytoplasmic (or nonreceptor) tyr kinase containing the Src homology domains, SH3 and SH2, N-terminal to the catalytic tyr kinase domain. They negatively regulate the activity of Src kinases that are anchored to the plasma membrane. To inhibit Src kinases, CSK is translocated to the membrane via binding to specific transmembrane proteins, G-proteins, or adaptor proteins near the membrane. CSK catalyzes the tyr phosphorylation of the regulatory C-terminal tail of Src kinases, resulting in their inactivation. It is expressed in a wide variety of tissues and plays a role, as a regulator of Src, in cell proliferation, survival, and differentiation, and consequently, in cancer development and progression. In addition, CSK also shows Src-independent functions. It is a critical component in G-protein signaling, and plays a role in cytoskeletal reorganization and cell migration. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212703 [Multi-domain]  Cd Length: 57  Bit Score: 46.91  E-value: 2.09e-07
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|.
gi 1789691051 201 AMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQRTGRTGMLPANYIE 251
Cdd:cd11769     6 AKYNFNGASEEDLPFKKGDILTIVAVTKDPNWYKAKNKDGREGMIPANYVQ 56
SH3_VAV1_2 cd11976
C-terminal (or second) Src homology 3 domain of VAV1 protein; VAV1 is expressed predominantly ...
198-251 2.19e-07

C-terminal (or second) Src homology 3 domain of VAV1 protein; VAV1 is expressed predominantly in the hematopoietic system and it plays an important role in the development and activation of B and T cells. It is activated by tyrosine phosphorylation to function as a guanine nucleotide exchange factor (GEF) for Rho GTPases following cell surface receptor activation, triggering various effects such as cytoskeletal reorganization, transcription regulation, cell cycle progression, and calcium mobilization. It also serves as a scaffold protein and has been shown to interact with Ku70, Socs1, Janus kinase 2, SIAH2, S100B, Abl gene, ZAP-70, SLP76, and Syk, among others. VAV proteins contain several domains that enable their function: N-terminal calponin homology (CH), acidic, RhoGEF (also called Dbl-homologous or DH), Pleckstrin Homology (PH), C1 (zinc finger), SH2, and two SH3 domains. The C-terminal SH3 domain of Vav1 interacts with a wide variety of proteins including cytoskeletal regulators (zyxin), RNA-binding proteins (Sam68), transcriptional regulators, viral proteins, and dynamin 2. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212909 [Multi-domain]  Cd Length: 54  Bit Score: 46.48  E-value: 2.19e-07
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....*
gi 1789691051 198 TYRAMYDYSAQDEDEVSFRDGDYI-VNVQPIDDGWMYGTVQrtGRTGMLPANYIE 251
Cdd:cd11976     1 TAKARYDFCARDRSELSLKEGDIIkILNKKGQQGWWRGEIY--GRVGWFPANYVE 53
SH3_alphaPIX cd12060
Src Homology 3 domain of alpha-Pak Interactive eXchange factor; Alpha-PIX, also called Rho ...
200-251 2.68e-07

Src Homology 3 domain of alpha-Pak Interactive eXchange factor; Alpha-PIX, also called Rho guanine nucleotide exchange factor 6 (ARHGEF6) or Cool (Cloned out of Library)-2, activates small GTPases by exchanging bound GDP for free GTP. It acts as a GEF for both Cdc42 and Rac 1, and is localized in dendritic spines where it regulates spine morphogenesis. It controls dendritic length and spine density in the hippocampus. Mutations in the ARHGEF6 gene cause X-linked intellectual disability in humans. PIX proteins contain an N-terminal SH3 domain followed by RhoGEF (also called Dbl-homologous or DH) and Pleckstrin Homology (PH) domains, and a C-terminal leucine-zipper domain for dimerization. The SH3 domain of PIX binds to an atypical PxxxPR motif in p21-activated kinases (PAKs) with high affinity. The binding of PAKs to PIX facilitate the localization of PAKs to focal complexes and also localizes PAKs to PIX targets Cdc43 and Rac, leading to the activation of PAKs. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212993  Cd Length: 58  Bit Score: 46.53  E-value: 2.68e-07
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|..
gi 1789691051 200 RAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQrtGRTGMLPANYIE 251
Cdd:cd12060     5 KARFNFKQTNEDELSVCKGDIIYVTRVEEGGWWEGTLN--GKTGWFPSNYVR 54
SH3_Sho1p cd11855
Src homology 3 domain of High osmolarity signaling protein Sho1p; Sho1p (or Sho1), also called ...
198-251 2.83e-07

Src homology 3 domain of High osmolarity signaling protein Sho1p; Sho1p (or Sho1), also called SSU81 (Suppressor of SUA8-1 mutation), is a yeast membrane protein that regulates adaptation to high salt conditions by activating the HOG (high-osmolarity glycerol) pathway. High salt concentrations lead to the localization to the membrane of the MAPKK Pbs2, which is then activated by the MAPKK Ste11 and in turn, activates the MAPK Hog1. Pbs2 is localized to the membrane though the interaction of its PxxP motif with the SH3 domain of Sho1p. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212789 [Multi-domain]  Cd Length: 55  Bit Score: 46.26  E-value: 2.83e-07
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....*.
gi 1789691051 198 TYRAMYDYSAQDED--EVSFRDGDyIVNVQPIDDGWMYGTVQRtGRTGMLPANYIE 251
Cdd:cd11855     1 RARALYPYDASPDDpnELSFEKGE-ILEVSDTSGKWWQARKSN-GETGICPSNYLQ 54
SH3_Sorbs2_2 cd11923
Second Src Homology 3 domain of Sorbin and SH3 domain containing 2 (Sorbs2), also called ...
201-253 3.02e-07

Second Src Homology 3 domain of Sorbin and SH3 domain containing 2 (Sorbs2), also called Arg-binding protein 2 (ArgBP2); Sorbs2 or ArgBP2 is an adaptor protein containing one sorbin homology (SoHo) and three SH3 domains. It regulates actin-dependent processes including cell adhesion, morphology, and migration. It is expressed in many tissues and is abundant in the heart. Like vinexin, it is found in focal adhesion where it interacts with vinculin and afadin. It also localizes in epithelial cell stress fibers and in cardiac muscle cell Z-discs. Sorbs2 has been implicated to play roles in the signaling of c-Arg, Akt, and Pyk2. Other interaction partners of Sorbs2 include c-Abl, flotillin, spectrin, dynamin 1/2, synaptojanin, PTP-PEST, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212856 [Multi-domain]  Cd Length: 57  Bit Score: 46.45  E-value: 3.02e-07
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|...
gi 1789691051 201 AMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQRTGRTGMLPANYIEFV 253
Cdd:cd11923     5 AKYNFNADTNVELSLRKGDRVVLLKQVDQNWYEGKIPGTNRQGIFPVSYVEVI 57
SH3_PLCgamma1 cd11970
Src homology 3 domain of Phospholipase C (PLC) gamma 1; PLCgamma1 is widely expressed and is ...
198-251 3.68e-07

Src homology 3 domain of Phospholipase C (PLC) gamma 1; PLCgamma1 is widely expressed and is essential in growth and development. It is activated by the TrkA receptor tyrosine kinase and functions as a key regulator of cell differentiation. It is also the predominant PLCgamma in T cells and is required for T cell and NK cell function. PLCs catalyze the hydrolysis of phosphatidylinositol (4,5)-bisphosphate [PtdIns(4,5)P2] to produce Ins(1,4,5)P3 and diacylglycerol (DAG). Ins(1,4,5)P3 initiates the calcium signaling cascade while DAG functions as an activator of PKC. PLCgamma contains a Pleckstrin homology (PH) domain followed by an elongation factor (EF) domain, two catalytic regions of PLC domains that flank two tandem SH2 domains, followed by a SH3 domain and C2 domain. The SH3 domain of PLCgamma1 directly interacts with dynamin-1 and can serve as a guanine nucleotide exchange factor (GEF). It also interacts with Cbl, inhibiting its phosphorylation and activity. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212903  Cd Length: 60  Bit Score: 46.13  E-value: 3.68e-07
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....*
gi 1789691051 198 TYRAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVqrTGRTGM-LPANYIE 251
Cdd:cd11970     5 AVKALFDYKAQREDELTFTKNAIIQNVEKQEGGWWRGDY--GGKKQLwFPSNYVE 57
SH3_CD2AP_2 cd12054
Second Src Homology 3 domain (SH3B) of CD2-associated protein; CD2AP, also called CMS (Cas ...
197-251 4.57e-07

Second Src Homology 3 domain (SH3B) of CD2-associated protein; CD2AP, also called CMS (Cas ligand with Multiple SH3 domains) or METS1 (Mesenchyme-to-Epithelium Transition protein with SH3 domains), is a cytosolic adaptor protein that plays a role in regulating the cytoskeleton. It is critical in cell-to-cell union necessary for kidney function. It also stabilizes the contact between a T cell and antigen-presenting cells. It is primarily expressed in podocytes at the cytoplasmic face of the slit diaphragm and serves as a linker anchoring podocin and nephrin to the actin cytoskeleton. CD2AP contains three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CD2AP to bind various protein partners and assemble complexes that have been implicated in many different functions. This alignment model represents the second SH3 domain (SH3B) of CD2AP. SH3B binds to c-Cbl in a site (TPSSRPLR is the core binding motif) distinct from the c-Cbl/SH3A binding site. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212987 [Multi-domain]  Cd Length: 55  Bit Score: 45.73  E-value: 4.57e-07
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....*
gi 1789691051 197 RTYRAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVqrTGRTGMLPANYIE 251
Cdd:cd12054     1 RQCKVLFEYVPQNEDELELKVGDIIDINEEVEEGWWSGTL--NGKSGLFPSNFVK 53
SH3_SPIN90 cd11849
Src homology 3 domain of SH3 protein interacting with Nck, 90 kDa (SPIN90); SPIN90 is also ...
199-251 5.55e-07

Src homology 3 domain of SH3 protein interacting with Nck, 90 kDa (SPIN90); SPIN90 is also called NCK interacting protein with SH3 domain (NCKIPSD), Dia-interacting protein (DIP), 54 kDa vimentin-interacting protein (VIP54), or WASP-interacting SH3-domain protein (WISH). It is an F-actin binding protein that regulates actin polymerization and endocytosis. It associates with the Arp2/3 complex near actin filaments and determines filament localization at the leading edge of lamellipodia. SPIN90 is expressed in the early stages of neuronal differentiation and plays a role in regulating growth cone dynamics and neurite outgrowth. It also interacts with IRSp53 and regulates cell motility by playing a role in the formation of membrane protrusions. SPIN90 contains an N-terminal SH3 domain, a proline-rich domain, and a C-terminal VCA (verprolin-homology and cofilin-like acidic) domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212783 [Multi-domain]  Cd Length: 53  Bit Score: 45.38  E-value: 5.55e-07
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|...
gi 1789691051 199 YRAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWmYGTVQRTGRTGMLPANYIE 251
Cdd:cd11849     2 YRALYDFKSAEPNTLSFSEGETFLLLERSNAHW-WLVTNHSGETGYVPANYVK 53
SH3_CIN85_2 cd12055
Second Src Homology 3 domain (SH3B) of Cbl-interacting protein of 85 kDa; CIN85, also called ...
200-251 5.66e-07

Second Src Homology 3 domain (SH3B) of Cbl-interacting protein of 85 kDa; CIN85, also called SH3 domain-containing kinase-binding protein 1 (SH3KBP1) or CD2-binding protein 3 (CD2BP3) or Ruk, is an adaptor protein that is involved in the downregulation of receptor tyrosine kinases by facilitating endocytosis through interaction with endophilin-associated ubiquitin ligase Cbl proteins. It is also important in many other cellular processes including vesicle-mediated transport, cytoskeletal remodelling, apoptosis, cell adhesion and migration, and viral infection, among others. CIN85 exists as multiple variants from alternative splicing; the main variant contains three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CIN85 to bind various protein partners and assemble complexes that have been implicated in many different functions. This alignment model represents the second SH3 domain (SH3B) of CIN85. SH3B has been shown to bind Cbl proline-rich peptides and ubiquitin. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212988 [Multi-domain]  Cd Length: 53  Bit Score: 45.37  E-value: 5.66e-07
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|..
gi 1789691051 200 RAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQrtGRTGMLPANYIE 251
Cdd:cd12055     3 QVAFSYLPQNEDELELKVGDIIEVVGEVEEGWWEGVLN--GKTGMFPSNFIK 52
Nebulin pfam00880
Nebulin repeat;
51-78 5.70e-07

Nebulin repeat;


Pssm-ID: 459977  Cd Length: 28  Bit Score: 44.69  E-value: 5.70e-07
                          10        20
                  ....*....|....*....|....*...
gi 1789691051  51 DTPENLRLKQQSELQSQVKYKRDFEESK 78
Cdd:pfam00880   1 DTPEIVHAKKNAKLQSDVKYKEDYEKEK 28
SH3_CIN85_3 cd12057
Third Src Homology 3 domain (SH3C) of Cbl-interacting protein of 85 kDa; CIN85, also called ...
200-253 5.76e-07

Third Src Homology 3 domain (SH3C) of Cbl-interacting protein of 85 kDa; CIN85, also called SH3 domain-containing kinase-binding protein 1 (SH3KBP1) or CD2-binding protein 3 (CD2BP3) or Ruk, is an adaptor protein that is involved in the downregulation of receptor tyrosine kinases by facilitating endocytosis through interaction with endophilin-associated ubiquitin ligase Cbl proteins. It is also important in many other cellular processes including vesicle-mediated transport, cytoskeletal remodelling, apoptosis, cell adhesion and migration, and viral infection, among others. CIN85 exists as multiple variants from alternative splicing; the main variant contains three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CIN85 to bind various protein partners and assemble complexes that have been implicated in many different functions. This alignment model represents the third SH3 domain (SH3C) of CIN85. SH3C has been shown to bind ubiquitin. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212990 [Multi-domain]  Cd Length: 56  Bit Score: 45.66  E-value: 5.76e-07
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....*.
gi 1789691051 200 RAMYDYSAQDEDEVSFRDGDY--IVNVQPIDDGWMYGTVqrTGRTGMLPANYIEFV 253
Cdd:cd12057     3 KVLFPYEAQNEDELTIKEGDIvtLISKDCIDAGWWEGEL--NGRRGVFPDNFVKLL 56
SH3_GRAP_C cd11951
C-terminal Src homology 3 domain of GRB2-related adaptor protein; GRAP is a GRB-2 like adaptor ...
200-250 5.81e-07

C-terminal Src homology 3 domain of GRB2-related adaptor protein; GRAP is a GRB-2 like adaptor protein that is highly expressed in lymphoid tissues. It acts as a negative regulator of T cell receptor (TCR)-induced lymphocyte proliferation by downregulating the signaling to the Ras/ERK pathway. It has been identified as a regulator of TGFbeta signaling in diabetic kidney tubules and may have a role in the pathogenesis of the disease. GRAP contains an N-terminal SH3 domain, a central SH2 domain, and a C-terminal SH3 domain. The C-terminal SH3 domains (SH3c) of the related proteins, GRB2 and GRAP2, have been shown to bind to classical PxxP motif ligands, as well as to non-classical motifs. GRB2 SH3c binds Gab2 (Grb2-associated binder 2) through epitopes containing RxxK motifs, while the SH3c of GRAP2 binds to the phosphatase-like protein HD-PTP via a RxxxxK motif. SH3 domains are protein interaction domains that typically bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212884  Cd Length: 53  Bit Score: 45.56  E-value: 5.81e-07
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|.
gi 1789691051 200 RAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVqrTGRTGMLPANYI 250
Cdd:cd11951     3 QAQYDFSAEDPSQLSFRRGDIIEVLDCPDPNWWRGRI--SGRVGFFPRNYV 51
SH3_CD2AP-like_2 cd11874
Second Src Homology 3 domain (SH3B) of CD2-associated protein and similar proteins; This ...
200-251 5.82e-07

Second Src Homology 3 domain (SH3B) of CD2-associated protein and similar proteins; This subfamily is composed of the second SH3 domain (SH3B) of CD2AP, CIN85 (Cbl-interacting protein of 85 kDa), and similar domains. CD2AP and CIN85 are adaptor proteins that bind to protein partners and assemble complexes that have been implicated in T cell activation, kidney function, and apoptosis of neuronal cells. They also associate with endocytic proteins, actin cytoskeleton components, and other adaptor proteins involved in receptor tyrosine kinase (RTK) signaling. CD2AP and the main isoform of CIN85 contain three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CD2AP and CIN85 to bind various protein partners and assemble complexes that have been implicated in many different functions. SH3B of both proteins have been shown to bind to Cbl. In the case of CD2AP, its SH3B binds to Cbl at a site distinct from the c-Cbl/SH3A binding site. The CIN85 SH3B also binds ubiquitin. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212807 [Multi-domain]  Cd Length: 53  Bit Score: 45.40  E-value: 5.82e-07
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|..
gi 1789691051 200 RAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQrtGRTGMLPANYIE 251
Cdd:cd11874     3 KVLFSYTPQNEDELELKVGDTIEVLGEVEEGWWEGKLN--GKVGVFPSNFVK 52
SH3_SNX18 cd11897
Src Homology 3 domain of Sorting nexin 18; SNX18 is localized to peripheral endosomal ...
200-251 5.95e-07

Src Homology 3 domain of Sorting nexin 18; SNX18 is localized to peripheral endosomal structures, and acts in a trafficking pathway that is clathrin-independent but relies on AP-1 and PACS1. It binds FIP5 and is required for apical lumen formation. It may also play a role in axonal elongation. SNXs are Phox homology (PX) domain containing proteins that are involved in regulating membrane traffic and protein sorting in the endosomal system. SNX18 also contains BAR and SH3 domains. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212830 [Multi-domain]  Cd Length: 55  Bit Score: 45.37  E-value: 5.95e-07
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|...
gi 1789691051 200 RAMYDYSAQDEDEVSFRDGDYIVNVQPID-DGWMYGTVQRtGRTGMLPANYIE 251
Cdd:cd11897     3 RALYDFRSENPGEISLREHEVLSLCSEQDiEGWLEGVNSR-GDRGLFPASYVE 54
SH3_SH3RF2_3 cd11784
Third Src Homology 3 domain of SH3 domain containing ring finger 2; SH3RF2 is also called ...
199-250 6.83e-07

Third Src Homology 3 domain of SH3 domain containing ring finger 2; SH3RF2 is also called POSHER (POSH-eliminating RING protein) or HEPP1 (heart protein phosphatase 1-binding protein). It acts as an anti-apoptotic regulator of the JNK pathway by binding to and promoting the degradation of SH3RF1 (or POSH), a scaffold protein that is required for pro-apoptotic JNK activation. It may also play a role in cardiac functions together with protein phosphatase 1. SH3RF2 contains an N-terminal RING finger domain and three SH3 domains. This model represents the third SH3 domain, located in the middle, of SH3RF2. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212718  Cd Length: 55  Bit Score: 45.15  E-value: 6.83e-07
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|..
gi 1789691051 199 YRAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQRTGRTGMLPANYI 250
Cdd:cd11784     2 CVALHSYSAHRPEELELQKGEGVRVLGKFQEGWLRGLSLVTGRVGIFPSNYV 53
SH3_Fyn_Yrk cd12006
Src homology 3 domain of Fyn and Yrk Protein Tyrosine Kinases; Fyn and Yrk (Yes-related kinase) ...
199-250 6.92e-07

Src homology 3 domain of Fyn and Yrk Protein Tyrosine Kinases; Fyn and Yrk (Yes-related kinase) are members of the Src subfamily of proteins, which are cytoplasmic (or non-receptor) PTKs. Fyn, together with Lck, plays a critical role in T-cell signal transduction by phosphorylating ITAM (immunoreceptor tyr activation motif) sequences on T-cell receptors, ultimately leading to the proliferation and differentiation of T-cells. In addition, Fyn is involved in the myelination of neurons, and is implicated in Alzheimer's and Parkinson's diseases. Yrk has been detected only in chickens. It is primarily found in neuronal and epithelial cells and in macrophages. It may play a role in inflammation and in response to injury. Src kinases contain an N-terminal SH4 domain with a myristoylation site, followed by SH3 and SH2 domains, a tyr kinase domain, and a regulatory C-terminal region containing a conserved tyr. They are activated by autophosphorylation at the tyr kinase domain, but are negatively regulated by phosphorylation at the C-terminal tyr by Csk (C-terminal Src Kinase). The SH3 domain of Src kinases contributes to substrate recruitment by binding adaptor proteins/substrates, and regulation of kinase activity through an intramolecular interaction. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212939 [Multi-domain]  Cd Length: 56  Bit Score: 45.43  E-value: 6.92e-07
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|..
gi 1789691051 199 YRAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQRTGRTGMLPANYI 250
Cdd:cd12006     3 FVALYDYEARTEDDLSFHKGEKFQILNSSEGDWWEARSLTTGETGYIPSNYV 54
SH3_BOI cd11886
Src Homology 3 domain of fungal BOI-like proteins; This subfamily includes the Saccharomyces ...
198-249 7.08e-07

Src Homology 3 domain of fungal BOI-like proteins; This subfamily includes the Saccharomyces cerevisiae proteins BOI1 and BOI2, and similar proteins. They contain an N-terminal SH3 domain, a Sterile alpha motif (SAM), and a Pleckstrin homology (PH) domain at the C-terminus. BOI1 and BOI2 interact with the SH3 domain of Bem1p, a protein involved in bud formation. They promote polarized cell growth and participates in the NoCut signaling pathway, which is involved in the control of cytokinesis. SH3 domains bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs; they play a role in the regulation of enzymes by intramolecular interactions, changing the subcellular localization of signal pathway components and mediate multiprotein complex assemblies.


Pssm-ID: 212819  Cd Length: 55  Bit Score: 45.02  E-value: 7.08e-07
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....*.
gi 1789691051 198 TYRAMYDYSAQDEDEVSFRDGDYIvNVQPID----DGWMYGTVQRTGRTGMLPANY 249
Cdd:cd11886     1 LLIVIHDFNARSEDELTLKPGDKI-ELIEDDeefgDGWYLGRNLRTGETGLFPVVF 55
SH3_GRAP2_C cd11950
C-terminal Src homology 3 domain of GRB2-related adaptor protein 2; GRAP2 is also called GADS ...
200-251 7.93e-07

C-terminal Src homology 3 domain of GRB2-related adaptor protein 2; GRAP2 is also called GADS (GRB2-related adapter downstream of Shc), GrpL, GRB2L, Mona, or GRID (Grb2-related protein with insert domain). It is expressed specifically in the hematopoietic system. It plays an important role in T cell receptor (TCR) signaling by promoting the formation of the SLP-76:LAT complex, which couples the TCR to the Ras pathway. It also has roles in antigen-receptor and tyrosine kinase mediated signaling. GRAP2 is unique from other GRB2-like adaptor proteins in that it can be regulated by caspase cleavage. It contains an N-terminal SH3 domain, a central SH2 domain, and a C-terminal SH3 domain. The C-terminal SH3 domain of GRAP2 binds to different motifs found in substrate peptides including the typical PxxP motif in hematopoietic progenitor kinase 1 (HPK1), the RxxK motif in SLP-76 and HPK1, and the RxxxxK motif in phosphatase-like protein HD-PTP. SH3 domains are protein interaction domains that typically bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212883 [Multi-domain]  Cd Length: 53  Bit Score: 45.20  E-value: 7.93e-07
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|..
gi 1789691051 200 RAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQrtGRTGMLPANYIE 251
Cdd:cd11950     3 RALYDFEALEDDELGFNSGDVIEVLDSSNPSWWKGRLH--GKLGLFPANYVA 52
SH3_Irsp53_BAIAP2L cd11779
Src Homology 3 domain of Insulin Receptor tyrosine kinase Substrate p53, Brain-specific ...
197-251 8.49e-07

Src Homology 3 domain of Insulin Receptor tyrosine kinase Substrate p53, Brain-specific Angiogenesis Inhibitor 1-Associated Protein 2 (BAIAP2)-Like proteins, and similar proteins; Proteins in this family include IRSp53, BAIAP2L1, BAIAP2L2, and similar proteins. They all contain an Inverse-Bin/Amphiphysin/Rvs (I-BAR) or IMD domain in addition to the SH3 domain. IRSp53, also known as BAIAP2, is a scaffolding protein that takes part in many signaling pathways including Cdc42-induced filopodia formation, Rac-mediated lamellipodia extension, and spine morphogenesis. IRSp53 exists as multiple splicing variants that differ mainly at the C-termini. BAIAP2L1, also called IRTKS (Insulin Receptor Tyrosine Kinase Substrate), serves as a substrate for the insulin receptor and binds the small GTPase Rac. It plays a role in regulating the actin cytoskeleton and colocalizes with F-actin, cortactin, VASP, and vinculin. IRSp53 and IRTKS also mediate the recruitment of effector proteins Tir and EspFu, which regulate host cell actin reorganization, to bacterial attachment sites. BAIAP2L2 co-localizes with clathrin plaques but its function has not been determined. The SH3 domains of IRSp53 and IRTKS have been shown to bind the proline-rich C-terminus of EspFu. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212713 [Multi-domain]  Cd Length: 57  Bit Score: 45.01  E-value: 8.49e-07
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....*.
gi 1789691051 197 RTYRAMYDYSAQDEDEVSFRDGDYIVNVQP-IDDGWMYGTVQRTGRTGMLPANYIE 251
Cdd:cd11779     1 PRVKALYPHAAGGETQLSFEEGDVITLLGPePRDGWHYGENERSGRRGWFPIAYTE 56
SH3_RIM-BP cd11851
Src homology 3 domains of Rab3-interacting molecules (RIMs) binding proteins; RIMs binding ...
199-252 8.59e-07

Src homology 3 domains of Rab3-interacting molecules (RIMs) binding proteins; RIMs binding proteins (RBPs, RIM-BPs) associate with calcium channels present in photoreceptors, neurons, and hair cells; they interact simultaneously with specific calcium channel subunits, and active zone proteins, RIM1 and RIM2. RIMs are part of the matrix at the presynaptic active zone and are associated with synaptic vesicles through their interaction with the small GTPase Rab3. RIM-BPs play a role in regulating synaptic transmission by serving as adaptors and linking calcium channels with the synaptic vesicle release machinery. RIM-BPs contain three SH3 domains and two to three fibronectin III repeats. Invertebrates contain one, while vertebrates contain at least two RIM-BPs, RIM-BP1 and RIM-BP2. RIM-BP1 is also called peripheral-type benzodiazapine receptor associated protein 1 (PRAX-1). Mammals contain a third protein, RIM-BP3. RIM-BP1 and RIM-BP2 are predominantly expressed in the brain where they display overlapping but distinct expression patterns, while RIM-BP3 is almost exclusively expressed in the testis and is essential in spermiogenesis. The SH3 domains of RIM-BPs bind to the PxxP motifs of RIM1, RIM2, and L-type (alpha1D) and N-type (alpha1B) calcium channel subunits. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212785  Cd Length: 62  Bit Score: 45.00  E-value: 8.59e-07
                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|..
gi 1789691051 199 YRAMYDYSAQD-------EDEVSFRDGDYIVNVQPID-DGWMYGTVQRtGRTGMLPANYIEF 252
Cdd:cd11851     2 MVALYDYNPETmspnddpEEELSFHAGDVVRVYGPMDeDGFYYGELEG-GRKGLVPSNFVQE 62
SH3_ephexin1_like cd11793
Src homology 3 domain of ephexin-1-like SH3 domain containing Rho guanine nucleotide exchange ...
201-252 8.61e-07

Src homology 3 domain of ephexin-1-like SH3 domain containing Rho guanine nucleotide exchange factors; Members of this family contain RhoGEF (also called Dbl-homologous or DH), Pleckstrin Homology (PH), and C-terminal SH3 domains. They include the Rho guanine nucleotide exchange factors ARHGEF5, ARHGEF16, ARHGEF19, ARHGEF26, ARHGEF27 (also called ephexin-1), and similar proteins, and are also called ephexins because they interact directly with ephrin A receptors. GEFs interact with Rho GTPases via their DH domains to catalyze nucleotide exchange by stabilizing the nucleotide-free GTPase intermediate. They play important roles in neuronal development. The SH3 domains of ARHGEFs play an autoinhibitory role through intramolecular interactions with a proline-rich region N-terminal to the DH domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212727 [Multi-domain]  Cd Length: 55  Bit Score: 45.02  E-value: 8.61e-07
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|...
gi 1789691051 201 AMYDYSAQDEDEVSFRDGDyIVNV-QPIDDGWMYGTVQRTGRTGMLPANYIEF 252
Cdd:cd11793     4 CVHAYTAQQPDELTLEEGD-VVNVlRKMPDGWYEGERLRDGERGWFPSSYTEE 55
LIM cd08368
LIM is a small protein-protein interaction domain, containing two zinc fingers; LIM domains ...
8-41 8.76e-07

LIM is a small protein-protein interaction domain, containing two zinc fingers; LIM domains are identified in a diverse group of proteins with wide variety of biological functions, including gene expression regulation, cell fate determination, cytoskeleton organization, tumor formation and development. LIM domains function as adaptors or scaffolds to support the assembly of multimeric protein complexes. They perform their functions through interactions with other protein partners. LIM domains are 50-60 amino acids in size and share two characteristic highly conserved zinc finger motifs. The two zinc fingers contain eight conserved residues, mostly cysteines and histidines, which coordinately bond to two zinc atoms. The consensus sequence of LIM domain has been defined as C-x(2)-C-x(16,23)-H-x(2)-[CH]-x(2)-C-x(2)-C-x(16,21)-C-x(2,3)-[CHD] (where X denotes any amino acid).


Pssm-ID: 259829 [Multi-domain]  Cd Length: 53  Bit Score: 45.00  E-value: 8.76e-07
                          10        20        30
                  ....*....|....*....|....*....|....
gi 1789691051   8 YWHKGCFHCEVCKMALNMNNYKGYEKKPYCNAHY 41
Cdd:cd08368    20 KWHPECFKCAECGKPLGGDSFYEKDGKPYCEKCY 53
SH3_Eve1_3 cd11816
Third Src homology 3 domain of ADAM-binding protein Eve-1; Eve-1, also called SH3 ...
200-250 9.50e-07

Third Src homology 3 domain of ADAM-binding protein Eve-1; Eve-1, also called SH3 domain-containing protein 19 (SH3D19) or EEN-binding protein (EBP), exists in multiple alternatively spliced isoforms. The longest isoform contains five SH3 domain in the C-terminal region and seven proline-rich motifs in the N-terminal region. It is abundantly expressed in skeletal muscle and heart, and may be involved in regulating the activity of ADAMs (A disintegrin and metalloproteases). Eve-1 interacts with EEN, an endophilin involved in endocytosis and may be the target of the MLL-EEN fusion protein that is implicated in leukemogenesis. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212750 [Multi-domain]  Cd Length: 51  Bit Score: 44.71  E-value: 9.50e-07
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|.
gi 1789691051 200 RAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQrtGRTGMLPANYI 250
Cdd:cd11816     3 VARFDFEGEQEDELSFSEGDVITLKEYVGEEWAKGELN--GKIGIFPLNFV 51
LIM smart00132
Zinc-binding domain present in Lin-11, Isl-1, Mec-3; Zinc-binding domain family. Some LIM ...
8-40 1.17e-06

Zinc-binding domain present in Lin-11, Isl-1, Mec-3; Zinc-binding domain family. Some LIM domains bind protein partners via tyrosine-containing motifs. LIM domains are found in many key regulators of developmental pathways.


Pssm-ID: 214528 [Multi-domain]  Cd Length: 54  Bit Score: 44.68  E-value: 1.17e-06
                           10        20        30
                   ....*....|....*....|....*....|...
gi 1789691051    8 YWHKGCFHCEVCKMALNMNNYKGYEKKPYCNAH 40
Cdd:smart00132  22 VWHPECFKCATCGKPLSGDTFFEKDGKLYCKDC 54
SH3_STAM2 cd11963
Src homology 3 domain of Signal Transducing Adaptor Molecule 2; STAM2, also called EAST ...
196-250 1.19e-06

Src homology 3 domain of Signal Transducing Adaptor Molecule 2; STAM2, also called EAST (Epidermal growth factor receptor-associated protein with SH3 and TAM domain) or Hbp (Hrs binding protein), is part of the endosomal sorting complex required for transport (ESCRT-0). It plays a role in sorting mono-ubiquinated endosomal cargo for trafficking to the lysosome for degradation. It is also involved in the regulation of exocytosis. STAMs were discovered as proteins that are highly phosphorylated following cytokine and growth factor stimulation. They function in cytokine signaling and surface receptor degradation, as well as regulate Golgi morphology. They associate with many proteins including Jak2 and Jak3 tyrosine kinases, Hrs, AMSH, and UBPY. STAM adaptor proteins contain VHS (Vps27, Hrs, STAM homology), ubiquitin interacting (UIM), and SH3 domains. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212896 [Multi-domain]  Cd Length: 57  Bit Score: 44.62  E-value: 1.19e-06
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....*
gi 1789691051 196 LRTYRAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQRTgrTGMLPANYI 250
Cdd:cd11963     1 ARKVRALYDFEAVEDNELTFKHGEIIIVLDDSDANWWKGENHRG--VGLFPSNFV 53
SH3_Yes cd12007
Src homology 3 domain of Yes Protein Tyrosine Kinase; Yes (or c-Yes) is a member of the Src ...
199-250 1.19e-06

Src homology 3 domain of Yes Protein Tyrosine Kinase; Yes (or c-Yes) is a member of the Src subfamily of proteins, which are cytoplasmic (or non-receptor) PTKs. c-Yes kinase is the cellular homolog of the oncogenic protein (v-Yes) encoded by the Yamaguchi 73 and Esh sarcoma viruses. It displays functional overlap with other Src subfamily members, particularly Src. It also shows some unique functions such as binding to occludins, transmembrane proteins that regulate extracellular interactions in tight junctions. Yes also associates with a number of proteins in different cell types that Src does not interact with, like JAK2 and gp130 in pre-adipocytes, and Pyk2 in treated pulmonary vein endothelial cells. Although the biological function of Yes remains unclear, it appears to have a role in regulating cell-cell interactions and vesicle trafficking in polarized cells. Src kinases contain an N-terminal SH4 domain with a myristoylation site, followed by SH3 and SH2 domains, a tyr kinase domain, and a regulatory C-terminal region containing a conserved tyr. They are activated by autophosphorylation at the tyr kinase domain, but are negatively regulated by phosphorylation at the C-terminal tyr by Csk (C-terminal Src Kinase). The SH3 domain of Src kinases contributes to substrate recruitment by binding adaptor proteins/substrates, and regulation of kinase activity through an intramolecular interaction. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212940 [Multi-domain]  Cd Length: 58  Bit Score: 44.64  E-value: 1.19e-06
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|..
gi 1789691051 199 YRAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQRTGRTGMLPANYI 250
Cdd:cd12007     3 FVALYDYEARTTEDLSFKKGERFQIINNTEGDWWEARSIATGKNGYIPSNYV 54
SH3_Ysc84p_like cd11842
Src homology 3 domain of Ysc84p and similar fungal proteins; This family is composed of the ...
200-251 1.24e-06

Src homology 3 domain of Ysc84p and similar fungal proteins; This family is composed of the Saccharomyces cerevisiae proteins, Ysc84p (also called LAS17-binding protein 4, Lsb4p) and Lsb3p, and similar fungal proteins. They contain an N-terminal SYLF domain (also called DUF500) and a C-terminal SH3 domain. Ysc84p localizes to actin patches and plays an important in actin polymerization during endocytosis. The N-terminal domain of both Ysc84p and Lsb3p can bind and bundle actin filaments. A study of the yeast SH3 domain interactome predicts that the SH3 domains of Lsb3p and Lsb4p may function as molecular hubs for the assembly of endocytic complexes. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212776 [Multi-domain]  Cd Length: 55  Bit Score: 44.72  E-value: 1.24e-06
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....
gi 1789691051 200 RAMYDYSAQDEDEVSFRDGDYIVNVQPID--DGWMYGTVqrTGRTGMLPANYIE 251
Cdd:cd11842     3 VALYDFAGEQPGDLAFQKGDIITILKKSDsqNDWWTGRI--GGREGIFPANYVE 54
SH3_Sla1p_1 cd11773
First Src Homology 3 domain of the fungal endocytic adaptor protein Sla1p; Sla1p facilitates ...
199-249 1.26e-06

First Src Homology 3 domain of the fungal endocytic adaptor protein Sla1p; Sla1p facilitates endocytosis by playing a role as an adaptor protein in coupling components of the actin cytoskeleton to the endocytic machinery. It interacts with Abp1p, Las17p and Pan1p, which are activator proteins of actin-related protein 2/3 (Arp2/3). Sla1p contains multiple domains including three SH3 domains, a SAM (sterile alpha motif) domain, and a Sla1 homology domain 1 (SHD1), which binds to the NPFXD motif that is found in many integral membrane proteins such as the Golgi-localized Arf-binding protein Lsb5p and the P4-ATPases, Drs2p and Dnf1p. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212707 [Multi-domain]  Cd Length: 57  Bit Score: 44.72  E-value: 1.26e-06
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....*...
gi 1789691051 199 YRAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMygTVQR-------TGRTGMLPANY 249
Cdd:cd11773     2 YKALYDYEPQTEDELTIQEDDILYLLEKSDDDWW--KVKLkvnssddDEPVGLVPATY 57
SH3_Intersectin1_5 cd11995
Fifth Src homology 3 domain (or SH3E) of Intersectin-1; Intersectin-1 (ITSN1) is an adaptor ...
201-252 1.46e-06

Fifth Src homology 3 domain (or SH3E) of Intersectin-1; Intersectin-1 (ITSN1) is an adaptor protein that functions in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. It plays a role in clathrin-coated pit (CCP) formation. It binds to many proteins through its multidomain structure and facilitate the assembly of multimeric complexes. ITSN1 localizes in membranous organelles, CCPs, the Golgi complex, and may be involved in the cell membrane trafficking system. It exists in alternatively spliced short and long isoforms. The short isoform contains two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoform, in addition, contains RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. The fifth SH3 domain (or SH3E) of ITSN1 has been shown to bind many protein partners including SGIP1, Sos1, dynamin1/2, CIN85, c-Cbl, SHIP2, N-WASP, and synaptojanin-1, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212928 [Multi-domain]  Cd Length: 54  Bit Score: 44.17  E-value: 1.46e-06
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|..
gi 1789691051 201 AMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVqrTGRTGMLPANYIEF 252
Cdd:cd11995     5 GMYDYTAQNDDELAFSKGQIINVLNKEDPDWWKGEL--NGQVGLFPSNYVKL 54
SH3_STAM cd11820
Src homology 3 domain of Signal Transducing Adaptor Molecules; STAMs were discovered as ...
197-250 1.56e-06

Src homology 3 domain of Signal Transducing Adaptor Molecules; STAMs were discovered as proteins that are highly phosphorylated following cytokine and growth factor stimulation. They function in cytokine signaling and surface receptor degradation, as well as regulate Golgi morphology. They associate with many proteins including Jak2 and Jak3 tyrosine kinases, Hrs, AMSH, and UBPY. STAM adaptor proteins contain VHS (Vps27, Hrs, STAM homology), ubiquitin interacting (UIM), and SH3 domains. There are two vertebrate STAMs, STAM1 and STAM2, which may be functionally redundant; vertebrate STAMs contain ITAM motifs. They are part of the endosomal sorting complex required for transport (ESCRT-0). STAM2 deficiency in mice did not cause any obvious abnormality, while STAM1 deficiency resulted in growth retardation. Loss of both STAM1 and STAM2 in mice proved lethal, indicating that STAMs are important for embryonic development. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212754 [Multi-domain]  Cd Length: 54  Bit Score: 44.38  E-value: 1.56e-06
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....
gi 1789691051 197 RTYRAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQRtgRTGMLPANYI 250
Cdd:cd11820     1 RKVRALYDFEAAEDNELTFKAGEIITVLDDSDPNWWKGSNHR--GEGLFPANFV 52
SH3_MYO15 cd11884
Src Homology 3 domain of Myosin XV; This subfamily is composed of proteins with similarity to ...
200-251 1.57e-06

Src Homology 3 domain of Myosin XV; This subfamily is composed of proteins with similarity to Myosin XVa. Myosin XVa is an unconventional myosin that is critical for the normal growth of mechanosensory stereocilia of inner ear hair cells. Mutations in the myosin XVa gene are associated with nonsyndromic hearing loss. Myosin XVa contains a unique N-terminal extension followed by a motor domain, light chain-binding IQ motifs, and a tail consisting of a pair of MyTH4-FERM tandems separated by a SH3 domain, and a PDZ domain. SH3 domains bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs; they play a role in the regulation of enzymes by intramolecular interactions, changing the subcellular localization of signal pathway components and mediate multiprotein complex assemblies.


Pssm-ID: 212817 [Multi-domain]  Cd Length: 56  Bit Score: 44.24  E-value: 1.57e-06
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....*.
gi 1789691051 200 RAMYDYSAQDEDEVSFRDGDyIVNVQP----IDDGWMYGTVQrtGRTGMLPANYIE 251
Cdd:cd11884     3 VAVRAYITRDQTLLSFHKGD-VIKLLPkegpLDPGWLFGTLD--GRSGAFPKEYVQ 55
SH3_Myosin-I_fungi cd11858
Src homology 3 domain of Type I fungal Myosins; Type I myosins (myosin-I) are actin-dependent ...
198-251 1.57e-06

Src homology 3 domain of Type I fungal Myosins; Type I myosins (myosin-I) are actin-dependent motors in endocytic actin structures and actin patches. They play roles in membrane traffic in endocytic and secretory pathways, cell motility, and mechanosensing. Saccharomyces cerevisiae has two myosins-I, Myo3 and Myo5, which are involved in endocytosis and the polarization of the actin cytoskeleton. Myosin-I contains an N-terminal actin-activated ATPase, a phospholipid-binding TH1 (tail homology 1) domain, and a C-terminal extension which includes an F-actin-binding TH2 domain, an SH3 domain, and an acidic peptide that participates in activating the Arp2/3complex. The SH3 domain of myosin-I is required for myosin-I-induced actin polymerization. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212792 [Multi-domain]  Cd Length: 55  Bit Score: 44.30  E-value: 1.57e-06
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....
gi 1789691051 198 TYRAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQRTGRTGMLPANYIE 251
Cdd:cd11858     1 TYKALYDFAGSVANELSLKKDDIVYIVQKEDNGWWLAKKLDESKEGWVPAAYLE 54
NEBU smart00227
The Nebulin repeat is present also in Las1; Tandem arrays of these repeats are known to bind ...
46-76 2.33e-06

The Nebulin repeat is present also in Las1; Tandem arrays of these repeats are known to bind actin.


Pssm-ID: 128523  Cd Length: 31  Bit Score: 43.22  E-value: 2.33e-06
                           10        20        30
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gi 1789691051   46 FTTVADTPENLRLKQQSELQSQVKYKRDFEE 76
Cdd:smart00227   1 YTSVPDTPEILLAKKNQKLISDVKYKEDYEK 31
SH3_VAV_2 cd11830
C-terminal (or second) Src homology 3 domain of VAV proteins; VAV proteins function both as ...
198-251 2.33e-06

C-terminal (or second) Src homology 3 domain of VAV proteins; VAV proteins function both as cytoplasmic guanine nucleotide exchange factors (GEFs) for Rho GTPases and scaffold proteins and they play important roles in cell signaling by coupling cell surface receptors to various effector functions. They play key roles in processes that require cytoskeletal reorganization including immune synapse formation, phagocytosis, cell spreading, and platelet aggregation, among others. Vertebrates have three VAV proteins (VAV1, VAV2, and VAV3). VAV proteins contain several domains that enable their function: N-terminal calponin homology (CH), acidic, RhoGEF (also called Dbl-homologous or DH), Pleckstrin Homology (PH), C1 (zinc finger), SH2, and two SH3 domains. The SH3 domain of VAV is involved in the localization of proteins to specific sites within the cell, by interacting with proline-rich sequences within target proteins. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212764 [Multi-domain]  Cd Length: 54  Bit Score: 43.77  E-value: 2.33e-06
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....*
gi 1789691051 198 TYRAMYDYSAQDEDEVSFRDGDYIVNVQPI-DDGWMYGTVQrtGRTGMLPANYIE 251
Cdd:cd11830     1 TAKARYDFCARDMRELSLKEGDVVKIYNKKgQQGWWRGEIN--GRIGWFPSTYVE 53
SH3_Sorbs1_1 cd11919
First Src Homology 3 domain of Sorbin and SH3 domain containing 1 (Sorbs1), also called ponsin; ...
197-253 2.34e-06

First Src Homology 3 domain of Sorbin and SH3 domain containing 1 (Sorbs1), also called ponsin; Sorbs1 is also called ponsin, SH3P12, or CAP (c-Cbl associated protein). It is an adaptor protein containing one sorbin homology (SoHo) and three SH3 domains. It binds Cbl and plays a major role in regulating the insulin signaling pathway by enhancing insulin-induced phosphorylation of Cbl. Sorbs1, like vinexin, localizes at cell-ECM and cell-cell adhesion sites where it binds vinculin, paxillin, and afadin. It may function in the control of cell motility. Other interaction partners of Sorbs1 include c-Abl, Sos, flotillin, Grb4, ataxin-7, filamin C, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212852 [Multi-domain]  Cd Length: 55  Bit Score: 43.80  E-value: 2.34e-06
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....*..
gi 1789691051 197 RTYRAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGtvQRTGRTGMLPANYIEFV 253
Cdd:cd11919     1 RPARAKFDFKAQTLKELPLQKGDIVYIYKQIDQNWYEG--EHHGRVGIFPRSYIELL 55
SH3_SNX33 cd11896
Src Homology 3 domain of Sorting Nexin 33; SNX33 interacts with Wiskott-Aldrich syndrome ...
200-251 2.47e-06

Src Homology 3 domain of Sorting Nexin 33; SNX33 interacts with Wiskott-Aldrich syndrome protein (WASP) and plays a role in the maintenance of cell shape and cell cycle progression. It modulates the shedding and endocytosis of cellular prion protein (PrP(c)) and amyloid precursor protein (APP). SNXs are Phox homology (PX) domain containing proteins that are involved in regulating membrane traffic and protein sorting in the endosomal system. SNX33 also contains BAR and SH3 domains. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212829 [Multi-domain]  Cd Length: 55  Bit Score: 43.80  E-value: 2.47e-06
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|...
gi 1789691051 200 RAMYDYSAQDEDEVSFRDGDYIVNVQPID-DGWMYGTVQRtGRTGMLPANYIE 251
Cdd:cd11896     3 RALYSFQSENKEEINIQENEELVIFSENSlDGWLQGQNSR-GETGLFPASYVE 54
SH3_PI3K_p85 cd11776
Src Homology 3 domain of the p85 regulatory subunit of Class IA Phosphatidylinositol 3-kinases; ...
199-253 2.52e-06

Src Homology 3 domain of the p85 regulatory subunit of Class IA Phosphatidylinositol 3-kinases; Class I PI3Ks convert PtdIns(4,5)P2 to the critical second messenger PtdIns(3,4,5)P3. They are heterodimers and exist in multiple isoforms consisting of one catalytic subunit (out of four isoforms) and one of several regulatory subunits. Class IA PI3Ks associate with the p85 regulatory subunit family, which contains SH3, RhoGAP, and SH2 domains. The p85 subunits recruit the PI3K p110 catalytic subunit to the membrane, where p110 phosphorylates inositol lipids. Vertebrates harbor two p85 isoforms, called alpha and beta. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212710  Cd Length: 72  Bit Score: 44.04  E-value: 2.52e-06
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1789691051 199 YRAMYDYSAQDEDEVSFRDGDYIV---------------NVQPIDDGWMYGTVQRTGRTGMLPANYIEFV 253
Cdd:cd11776     3 YRALYDYEKERDEDIILKTGDVLVvenpellalgvpdgkETVPKPEGWLEGKNERTGERGDFPGTYVEFY 72
SH3_Intersectin_3 cd11838
Third Src homology 3 domain (or SH3C) of Intersectin; Intersectins (ITSNs) are adaptor ...
199-250 2.75e-06

Third Src homology 3 domain (or SH3C) of Intersectin; Intersectins (ITSNs) are adaptor proteins that function in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. They are essential for initiating clathrin-coated pit formation. They bind to many proteins through their multidomain structure and facilitate the assembly of multimeric complexes. Vertebrates contain two ITSN proteins, ITSN1 and ITSN2, which exist in alternatively spliced short and long isoforms. The short isoforms contain two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoforms, in addition, contain RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. ITSN1 and ITSN2 are both widely expressed, with variations depending on tissue type and stage of development. The third SH3 domain (or SH3C) of ITSN1 has been shown to bind many proteins including dynamin1/2, CIN85, c-Cbl, SHIP2, Reps1, synaptojanin-1, and WNK, among others. The SH3C of ITSN2 has been shown to bind the K15 protein of Kaposi's sarcoma-associated herpesvirus. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212772 [Multi-domain]  Cd Length: 52  Bit Score: 43.56  E-value: 2.75e-06
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|..
gi 1789691051 199 YRAMYDYSAQDEDEVSFRDGDYIVnVQPIDDGWMYGTVQrtGRTGMLPANYI 250
Cdd:cd11838     2 YIALYPYESNEPGDLTFNAGDVIL-VTKKDGEWWTGTIG--DRTGIFPSNYV 50
SH3_Intersectin1_3 cd11991
Third Src homology 3 domain (or SH3C) of Intersectin-1; Intersectin-1 (ITSN1) is an adaptor ...
199-250 4.37e-06

Third Src homology 3 domain (or SH3C) of Intersectin-1; Intersectin-1 (ITSN1) is an adaptor protein that functions in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. It plays a role in clathrin-coated pit (CCP) formation. It binds to many proteins through its multidomain structure and facilitate the assembly of multimeric complexes. ITSN1 localizes in membranous organelles, CCPs, the Golgi complex, and may be involved in the cell membrane trafficking system. It exists in alternatively spliced short and long isoforms. The short isoform contains two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoform, in addition, contains RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. The third SH3 domain (or SH3C) of ITSN1 has been shown to bind many proteins including dynamin1/2, CIN85, c-Cbl, SHIP2, Reps1, synaptojanin-1, and WNK, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212924  Cd Length: 52  Bit Score: 43.05  E-value: 4.37e-06
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|..
gi 1789691051 199 YRAMYDYSAQDEDEVSFRDGDYIVnVQPIDDGWMYGTVqrTGRTGMLPANYI 250
Cdd:cd11991     2 YVAMYTYESNEQGDLTFQQGDVIL-VTKKDGDWWTGTV--GDKTGVFPSNYV 50
SH3_MLK1-3 cd12059
Src Homology 3 domain of Mixed Lineage Kinases 1, 2, and 3; MLKs 1, 2, and 3 are Serine ...
201-252 4.78e-06

Src Homology 3 domain of Mixed Lineage Kinases 1, 2, and 3; MLKs 1, 2, and 3 are Serine/Threonine Kinases (STKs), catalyzing the transfer of the gamma-phosphoryl group from ATP to S/T residues on protein substrates. MLKs act as mitogen-activated protein kinase kinase kinases (MAP3Ks, MKKKs, MAPKKKs), which phosphorylate and activate MAPK kinases (MAPKKs or MKKs or MAP2Ks), which in turn phosphorylate and activate MAPKs during signaling cascades that are important in mediating cellular responses to extracellular signals. MLKs play roles in immunity and inflammation, as well as in cell death, proliferation, and cell cycle regulation. Little is known about the specific function of MLK1, also called MAP3K9. It is capable of activating the c-Jun N-terminal kinase pathway. Mice lacking both MLK1 and MLK2 are viable, fertile, and have normal life spans. MLK2, also called MAP3K10, is abundant in brain, skeletal muscle, and testis. It functions upstream of the MAPK, c-Jun N-terminal kinase. It binds hippocalcin, a calcium-sensor protein that protects neurons against calcium-induced cell death. Both MLK2 and hippocalcin may be associated with the pathogenesis of Parkinson's disease. MLK3, also called MAP3K11, is highly expressed in breast cancer cells and its signaling through c-Jun N-terminal kinase has been implicated in the migration, invasion, and malignancy of cancer cells. It also functions as a negative regulator of Inhibitor of Nuclear Factor-KappaB Kinase (IKK) and thus, impacts inflammation and immunity. MLKs contain an SH3 domain, a catalytic kinase domain, a leucine zipper, a proline-rich region, and a CRIB domain that mediates binding to GTP-bound Cdc42 and Rac. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212992 [Multi-domain]  Cd Length: 58  Bit Score: 42.83  E-value: 4.78e-06
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....*...
gi 1789691051 201 AMYDYSAQDEDEVSFRDGDyIVNVQPI------DDGWMYGTVQrtGRTGMLPANYIEF 252
Cdd:cd12059     4 AVFDYEASAEDELTLRRGD-RVEVLSKdsavsgDEGWWTGKIN--DRVGIFPSNYVTS 58
LIM_TLP_like cd09401
The LIM domains of thymus LIM protein (TLP); The LIM domain of thymus LIM protein (TLP) like ...
9-41 4.95e-06

The LIM domains of thymus LIM protein (TLP); The LIM domain of thymus LIM protein (TLP) like proteins: This family includes the LIM domains of TLP and CRIP (Cysteine-Rich Intestinal Protein). TLP is the distant member of the CRP family of proteins. TLP has two isomers (TLP-A and TLP-B) and sharing approximately 30% with each of the three other CRPs. Like CRP1, CRP2 and CRP3/MLP, TLP has two LIM domains, connected by a flexible linker region. Unlike the CRPs, TLP lacks the nuclear targeting signal (K/R-K/R-Y-G-P-K) and is localized solely in the cytoplasm. TLP is specifically expressed in the thymus in a subset of cortical epithelial cells. TLP has a role in development of normal thymus and in controlling the development and differentiation of thymic epithelial cells. CRIP is a short LIM protein with only one LIM domain. CRIP gene is developmentally regulated and can be induced by glucocorticoid hormones during the first three postnatal weeks. The domain shows close sequence homology to LIM domain of thymus LIM protein. However, unlike the TLP proteins which have two LIM domains, the members of this family have only one LIM domain. LIM domains are 50-60 amino acids in size and share two characteristic zinc finger motifs. The two zinc fingers contain eight conserved residues, mostly cysteines and histidines, which coordinately bond to two zinc atoms. LIM domains function as adaptors or scaffolds to support the assembly of multimeric protein complexes.


Pssm-ID: 188785 [Multi-domain]  Cd Length: 53  Bit Score: 42.71  E-value: 4.95e-06
                          10        20        30
                  ....*....|....*....|....*....|...
gi 1789691051   9 WHKGCFHCEVCKMALNMNNYKGYEKKPYCNAHY 41
Cdd:cd09401    21 WHKPCLRCEKCKKTLTPGQHSEHEGKPYCNKCY 53
SH3_CRK_N cd11758
N-terminal Src Homology 3 domain of Ct10 Regulator of Kinase adaptor proteins; CRK adaptor ...
200-251 5.06e-06

N-terminal Src Homology 3 domain of Ct10 Regulator of Kinase adaptor proteins; CRK adaptor proteins consists of SH2 and SH3 domains, which bind tyrosine-phosphorylated peptides and proline-rich motifs, respectively. They function downstream of protein tyrosine kinases in many signaling pathways started by various extracellular signals, including growth and differentiation factors. Cellular CRK (c-CRK) contains a single SH2 domain, followed by N-terminal and C-terminal SH3 domains. It is involved in the regulation of many cellular processes including cell growth, motility, adhesion, and apoptosis. CRK has been implicated in the malignancy of various human cancers. The N-terminal SH3 domain of CRK binds a number of target proteins including DOCK180, C3G, SOS, and cABL. The CRK family includes two alternatively spliced protein forms, CRKI and CRKII, that are expressed by the CRK gene, and the CRK-like (CRKL) protein, which is expressed by a distinct gene (CRKL). SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212692 [Multi-domain]  Cd Length: 55  Bit Score: 42.73  E-value: 5.06e-06
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|..
gi 1789691051 200 RAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWmYGTVQRTGRTGMLPANYIE 251
Cdd:cd11758     4 RALFDFPGNDDEDLPFKKGEILTVIRKPEEQW-WNARNSEGKTGMIPVPYVE 54
SH3_SH3RF3_1 cd11928
First Src Homology 3 domain of SH3 domain containing ring finger 3, an E3 ubiquitin-protein ...
200-251 5.27e-06

First Src Homology 3 domain of SH3 domain containing ring finger 3, an E3 ubiquitin-protein ligase; SH3RF3 is also called POSH2 (Plenty of SH3s 2) or SH3MD4 (SH3 multiple domains protein 4). It is a scaffold protein with E3 ubiquitin-protein ligase activity. It was identified in the screen for interacting partners of p21-activated kinase 2 (PAK2). It may play a role in regulating JNK mediated apoptosis in certain conditions. It also interacts with GTP-loaded Rac1. SH3RF3 is highly homologous to SH3RF1; it also contains an N-terminal RING finger domain and four SH3 domains. This model represents the first SH3 domain, located at the N-terminal half, of SH3RF3. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212861  Cd Length: 54  Bit Score: 42.60  E-value: 5.27e-06
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|..
gi 1789691051 200 RAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQrtGRTGMLPANYIE 251
Cdd:cd11928     4 KALYSYEGKEPGDLKFNKGDIIILRRKVDENWYHGELN--GCHGFLPASYIQ 53
SH3_Sorbs1_2 cd11922
Second Src Homology 3 domain of Sorbin and SH3 domain containing 1 (Sorbs1), also called ...
201-254 5.50e-06

Second Src Homology 3 domain of Sorbin and SH3 domain containing 1 (Sorbs1), also called ponsin; Sorbs1 is also called ponsin, SH3P12, or CAP (c-Cbl associated protein). It is an adaptor protein containing one sorbin homology (SoHo) and three SH3 domains. It binds Cbl and plays a major role in regulating the insulin signaling pathway by enhancing insulin-induced phosphorylation of Cbl. Sorbs1, like vinexin, localizes at cell-ECM and cell-cell adhesion sites where it binds vinculin, paxillin, and afadin. It may function in the control of cell motility. Other interaction partners of Sorbs1 include c-Abl, Sos, flotillin, Grb4, ataxin-7, filamin C, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212855 [Multi-domain]  Cd Length: 58  Bit Score: 42.67  E-value: 5.50e-06
                          10        20        30        40        50
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gi 1789691051 201 AMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQRTGRTGMLPANYIEFVN 254
Cdd:cd11922     5 AKFNFNGDTQVEMSFRKGERITLLRQVDENWYEGRIPGTSRQGIFPITYVDVIK 58
SH3_Src cd12008
Src homology 3 domain of Src Protein Tyrosine Kinase; Src (or c-Src) is a cytoplasmic (or ...
198-250 5.67e-06

Src homology 3 domain of Src Protein Tyrosine Kinase; Src (or c-Src) is a cytoplasmic (or non-receptor) PTK and is the vertebrate homolog of the oncogenic protein (v-Src) from Rous sarcoma virus. Together with other Src subfamily proteins, it is involved in signaling pathways that regulate cytokine and growth factor responses, cytoskeleton dynamics, cell proliferation, survival, and differentiation. Src also play a role in regulating cell adhesion, invasion, and motility in cancer cells, and tumor vasculature, contributing to cancer progression and metastasis. Elevated levels of Src kinase activity have been reported in a variety of human cancers. Several inhibitors of Src have been developed as anti-cancer drugs. Src is also implicated in acute inflammatory responses and osteoclast function. Src kinases contain an N-terminal SH4 domain with a myristoylation site, followed by SH3 and SH2 domains, a tyr kinase domain, and a regulatory C-terminal region containing a conserved tyr. They are activated by autophosphorylation at the tyr kinase domain, but are negatively regulated by phosphorylation at the C-terminal tyr by Csk (C-terminal Src Kinase). The SH3 domain of Src kinases contributes to substrate recruitment by binding adaptor proteins/substrates, and regulation of kinase activity through an intramolecular interaction. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212941 [Multi-domain]  Cd Length: 56  Bit Score: 42.79  E-value: 5.67e-06
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|...
gi 1789691051 198 TYRAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQRTGRTGMLPANYI 250
Cdd:cd12008     1 TFVALYDYESRTETDLSFKKGERLQIVNNTEGDWWLAHSLTTGQTGYIPSNYV 53
SH3_ASPP cd11807
Src homology 3 domain of Apoptosis Stimulating of p53 proteins (ASPP); The ASPP family of ...
201-250 6.91e-06

Src homology 3 domain of Apoptosis Stimulating of p53 proteins (ASPP); The ASPP family of proteins bind to important regulators of apoptosis (p53, Bcl-2, and RelA) and cell growth (APCL, PP1). They share similarity at their C-termini, where they harbor a proline-rich region, four ankyrin (ANK) repeats, and an SH3 domain. Vertebrates contain three members of the family: ASPP1, ASPP2, and iASPP. ASPP1 and ASPP2 activate the apoptotic function of the p53 family of tumor suppressors (p53, p63, and p73), while iASPP is an oncoprotein that specifically inhibits p53-induced apoptosis. The expression of ASPP proteins is altered in tumors; ASPP1 and ASPP2 are downregulated whereas iASPP is upregulated is some cancer types. ASPP proteins also bind and regulate protein phosphatase 1 (PP1), and this binding is competitive with p53 binding. The SH3 domain and the ANK repeats of ASPP contribute to the p53 binding site; they bind to the DNA binding domain of p53. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212741 [Multi-domain]  Cd Length: 57  Bit Score: 42.37  E-value: 6.91e-06
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|...
gi 1789691051 201 AMYDYSAQDEDEVSFRDGDYIVNVQPIDDG---WMYGTVQrtGRTGMLPANYI 250
Cdd:cd11807     5 ALFDYEAENGDELSFREGDELTVLRKGDDDeteWWWARLN--DKEGYVPRNLL 55
SH3_Bem1p_1 cd11878
First Src Homology 3 domain of Bud emergence protein 1 and similar domains; Members of this ...
200-249 7.66e-06

First Src Homology 3 domain of Bud emergence protein 1 and similar domains; Members of this subfamily bear similarity to Saccharomyces cerevisiae Bem1p, containing two Src Homology 3 (SH3) domains at the N-terminus, a central PX domain, and a C-terminal PB1 domain. Bem1p is a scaffolding protein that is critical for proper Cdc42p activation during bud formation in yeast. During budding and mating, Bem1p migrates to the plasma membrane where it can serve as an adaptor for Cdc42p and some other proteins. Bem1p also functions as an effector of the G1 cyclin Cln3p and the cyclin-dependent kinase Cdc28p in promoting vacuolar fusion. SH3 domains bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs; they play a role in the regulation of enzymes by intramolecular interactions, changing the subcellular localization of signal pathway components and mediate multiprotein complex assemblies.


Pssm-ID: 212811 [Multi-domain]  Cd Length: 54  Bit Score: 42.28  E-value: 7.66e-06
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|.
gi 1789691051 200 RAMYDYSAQDEDEVSFRDGDYI-VNVQPIDDGWMYGTVQRTGRTGMLPANY 249
Cdd:cd11878     3 RALYDYRAQTPGELSFSKGDFFhVIGEEDQGEWYEATNPVTGKRGLVPKSY 53
SH3_GRAP2_N cd11947
N-terminal Src homology 3 domain of GRB2-related adaptor protein 2; GRAP2 is also called GADS ...
200-251 7.70e-06

N-terminal Src homology 3 domain of GRB2-related adaptor protein 2; GRAP2 is also called GADS (GRB2-related adapter downstream of Shc), GrpL, GRB2L, Mona, or GRID (Grb2-related protein with insert domain). It is expressed specifically in the hematopoietic system. It plays an important role in T cell receptor (TCR) signaling by promoting the formation of the SLP-76:LAT complex, which couples the TCR to the Ras pathway. It also have roles in antigen-receptor and tyrosine kinase mediated signaling. GRAP2 is unique from other GRB2-like adaptor proteins in that it can be regulated by caspase cleavage. It contains an N-terminal SH3 domain, a central SH2 domain, and a C-terminal SH3 domain. The N-terminal SH3 domain of the related protein GRB2 binds to Sos and Sos-derived proline-rich peptides. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212880 [Multi-domain]  Cd Length: 52  Bit Score: 42.09  E-value: 7.70e-06
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gi 1789691051 200 RAMYDYSAQDEDEVSFRDGDyIVNVQPIDDGWMygTVQRTGRTGMLPANYIE 251
Cdd:cd11947     3 RGKFDFTASGEDELSFKKGD-VLKILSSDDIWF--KAELNGEEGYVPKNFVD 51
SH3_STAM1 cd11964
Src homology 3 domain of Signal Transducing Adaptor Molecule 1; STAM1 is part of the endosomal ...
197-250 7.71e-06

Src homology 3 domain of Signal Transducing Adaptor Molecule 1; STAM1 is part of the endosomal sorting complex required for transport (ESCRT-0) and is involved in sorting ubiquitinated cargo proteins from the endosome. It may also be involved in the regulation of IL2 and GM-CSF mediated signaling, and has been implicated in neural cell survival. STAMs were discovered as proteins that are highly phosphorylated following cytokine and growth factor stimulation. They function in cytokine signaling and surface receptor degradation, as well as regulate Golgi morphology. They associate with many proteins including Jak2 and Jak3 tyrosine kinases, Hrs, AMSH, and UBPY. STAM adaptor proteins contain VHS (Vps27, Hrs, STAM homology), ubiquitin interacting (UIM), and SH3 domains. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212897 [Multi-domain]  Cd Length: 55  Bit Score: 42.24  E-value: 7.71e-06
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gi 1789691051 197 RTYRAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQRTgrTGMLPANYI 250
Cdd:cd11964     1 RKVRAIYDFEAAEDNELTFKAGDIITILDDSDPNWWKGETPQG--TGLFPSNFV 52
SH3_iASPP cd11952
Src Homology 3 (SH3) domain of Inhibitor of ASPP protein (iASPP); iASPP, also called ...
201-249 1.03e-05

Src Homology 3 (SH3) domain of Inhibitor of ASPP protein (iASPP); iASPP, also called RelA-associated inhibitor (RAI), is an oncoprotein that inhibits the apoptotic transactivation potential of p53. It is upregulated in human breast cancers expressing wild-type p53, in acute leukemias regardless of the p53 mutation status, as well as in ovarian cancer where it is associated with poor patient outcome and chemoresistance. iASPP is also a binding partner and negative regulator of p65RelA, which promotes cell proliferation and inhibits apoptosis; p65RelA has the opposite effect on cell growth compared to the p53 family. It contains a proline-rich region, four ankyrin (ANK) repeats, and an SH3 domain at its C-terminal half. The SH3 domain and the ANK repeats of iASPP contribute to the p53 binding site; they bind to the DNA binding domain of p53. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212885 [Multi-domain]  Cd Length: 56  Bit Score: 41.84  E-value: 1.03e-05
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gi 1789691051 201 AMYDYSAQDEDEVSFRDGDYIVNVQPIDDG--WMYGTVqrTGRTGMLPANY 249
Cdd:cd11952     5 ALWDYSAEFPDELSFKEGDMVTVLRKDGEGtdWWWASL--CGREGYVPRNY 53
SH3_Nck1_2 cd11901
Second Src Homology 3 domain of Nck1 adaptor protein; Nck1 (also called Nckalpha) plays a ...
195-250 1.07e-05

Second Src Homology 3 domain of Nck1 adaptor protein; Nck1 (also called Nckalpha) plays a crucial role in connecting signaling pathways of tyrosine kinase receptors and important effectors in actin dynamics and cytoskeletal remodeling. It binds and activates RasGAP, resulting in the downregulation of Ras. It is also involved in the signaling of endothilin-mediated inhibition of cell migration. Nck adaptor proteins regulate actin cytoskeleton dynamics by linking proline-rich effector molecules to protein tyrosine kinases and phosphorylated signaling intermediates. They contain three SH3 domains and a C-terminal SH2 domain. They function downstream of the PDGFbeta receptor and are involved in Rho GTPase signaling and actin dynamics. Vertebrates contain two Nck adaptor proteins: Nck1 (also called Nckalpha) and Nck2, which show partly overlapping functions but also bind distinct targets. The second SH3 domain of Nck appears to prefer ligands containing the APxxPxR motif. SH3 domains are protein interaction domains that usually bind to proline-rich ligands with moderate affinity and selectivity, preferentially a PxxP motif. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212834 [Multi-domain]  Cd Length: 55  Bit Score: 41.94  E-value: 1.07e-05
                          10        20        30        40        50
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gi 1789691051 195 NLRTYrAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQrtGRTGMLPANYI 250
Cdd:cd11901     1 NLPAY-VKFNYTAEREDELSLVKGTKVIVMEKCSDGWWRGSYN--GQVGWFPSNYV 53
SH3_AHI-1 cd11812
Src Homology 3 domain of Abelson helper integration site-1 (AHI-1); AHI-1, also called ...
198-250 1.37e-05

Src Homology 3 domain of Abelson helper integration site-1 (AHI-1); AHI-1, also called Jouberin, is expressed in high levels in the brain, gonad tissues, and skeletal muscle. It is an adaptor protein that interacts with the small GTPase Rab8a and regulates it distribution and function, affecting cilium formation and vesicle transport. Mutations in the AHI-1 gene can cause Joubert syndrome, a disorder characterized by brainstem malformations, cerebellar aplasia/hypoplasia, and retinal dystrophy. AHI-1 variation is also associated with susceptibility to schizophrenia and type 2 diabetes mellitus progression. AHI-1 contains WD40 and SH3 domains. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212746 [Multi-domain]  Cd Length: 52  Bit Score: 41.73  E-value: 1.37e-05
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|...
gi 1789691051 198 TYRAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQRtGRTGMLPANYI 250
Cdd:cd11812     1 TVVALYDYTANRSDELTIHRGDIIRVLYKDNDNWWFGSLVN-GQQGYFPANYV 52
LIM1_SF3 cd09440
The first Lim domain of pollen specific protein SF3; The first Lim domain of pollen specific ...
9-41 1.47e-05

The first Lim domain of pollen specific protein SF3; The first Lim domain of pollen specific protein SF3: SF3 is a Lim protein that is found exclusively in mature plant pollen grains. It contains two LIM domains. The exact function of SF3 is unknown. It may be a transcription factor required for the expression of late pollen genes. It is possible that SF3 protein is involved in controlling pollen-specific processes such as male gamete maturation, pollen tube formation, or even fertilization. As in other LIM domains, this domain family is 50-60 amino acids in size and shares two characteristic zinc finger motifs. The two zinc fingers contain eight conserved residues, mostly cysteines and histidines, which coordinately bond to two zinc atoms. LIM domains function as adaptors or scaffolds to support the assembly of multimeric protein.


Pssm-ID: 188824 [Multi-domain]  Cd Length: 63  Bit Score: 41.68  E-value: 1.47e-05
                          10        20        30
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gi 1789691051   9 WHKGCFHCEVCKMALNMNNYKGYEKKPYCNAHY 41
Cdd:cd09440    25 YHKSCFRCSHCKGTLKLSNYSSMEGVLYCKPHF 57
SH3_PLCgamma2 cd11969
Src homology 3 domain of Phospholipase C (PLC) gamma 2; PLCgamma2 is primarily expressed in ...
198-251 1.51e-05

Src homology 3 domain of Phospholipase C (PLC) gamma 2; PLCgamma2 is primarily expressed in haematopoietic cells, specifically in B cells. It is activated by tyrosine phosphorylation by B cell receptor (BCR) kinases and is recruited to the plasma membrane where its substrate is located. It is required in pre-BCR signaling and in the maturation of B cells. PLCs catalyze the hydrolysis of phosphatidylinositol (4,5)-bisphosphate [PtdIns(4,5)P2] to produce Ins(1,4,5)P3 and diacylglycerol (DAG). Ins(1,4,5)P3 initiates the calcium signaling cascade while DAG functions as an activator of PKC. PLCgamma contains a Pleckstrin homology (PH) domain followed by an elongation factor (EF) domain, two catalytic regions of PLC domains that flank two tandem SH2 domains, followed by a SH3 domain and C2 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212902  Cd Length: 55  Bit Score: 41.36  E-value: 1.51e-05
                          10        20        30        40        50
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gi 1789691051 198 TYRAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWM---YGT-VQRtgrtgMLPANYIE 251
Cdd:cd11969     1 TVKALYDYRAKRSDELSFCKGALIHNVSKETGGWWkgdYGGkVQH-----YFPSNYVE 53
SH3_Cyk3p-like cd11889
Src Homology 3 domain of Cytokinesis protein 3 and similar proteins; Cytokinesis protein 3 ...
200-250 1.55e-05

Src Homology 3 domain of Cytokinesis protein 3 and similar proteins; Cytokinesis protein 3 (Cyk3 or Cyk3p) is a component of the actomyosin ring independent cytokinesis pathway in yeast. It interacts with Inn1 and facilitates its recruitment to the bud neck, thereby promoting cytokinesis. Cyk3p contains an N-terminal SH3 domain and a C-terminal transglutaminase-like domain. The Cyk3p SH3 domain binds to the C-terminal proline-rich region of Inn1. SH3 domains bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs; they play a role in the regulation of enzymes by intramolecular interactions, changing the subcellular localization of signal pathway components and mediate multiprotein complex assemblies.


Pssm-ID: 212822  Cd Length: 53  Bit Score: 41.33  E-value: 1.55e-05
                          10        20        30        40        50
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gi 1789691051 200 RAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQRTGRTGMLPANYI 250
Cdd:cd11889     3 KAVYSWAGETEGDLGFLEGDLIEVLSIGDGSWWSGKLRRNGAEGIFPSNFV 53
SH3_PI3K_p85alpha cd11910
Src Homology 3 domain of the p85alpha regulatory subunit of Class IA Phosphatidylinositol ...
199-253 1.56e-05

Src Homology 3 domain of the p85alpha regulatory subunit of Class IA Phosphatidylinositol 3-kinases; Class I PI3Ks convert PtdIns(4,5)P2 to the critical second messenger PtdIns(3,4,5)P3. They are heterodimers and exist in multiple isoforms consisting of one catalytic subunit (out of four isoforms) and one of several regulatory subunits. Class IA PI3Ks associate with the p85 regulatory subunit family, which contains SH3, RhoGAP, and SH2 domains. The p85 subunits recruit the PI3K p110 catalytic subunit to the membrane, where p110 phosphorylates inositol lipids. Vertebrates harbor two p85 isoforms, called alpha and beta. In addition to regulating the p110 subunit, p85alpha interacts with activated FGFR3. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212843  Cd Length: 75  Bit Score: 42.19  E-value: 1.56e-05
                          10        20        30        40        50        60        70
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gi 1789691051 199 YRAMYDYSAQDEDEVSFRDGDYI-VN--------------VQPIDDGWMYGTVQRTGRTGMLPANYIEFV 253
Cdd:cd11910     4 YRALYDYKKEREEDIDLHLGDILtVNkgsllalgfsegqeARPEEIGWLNGYNETTGERGDFPGTYVEYI 73
SH3_Intersectin2_3 cd11992
Third Src homology 3 domain (or SH3C) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor ...
199-250 1.65e-05

Third Src homology 3 domain (or SH3C) of Intersectin-2; Intersectin-2 (ITSN2) is an adaptor protein that functions in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. It plays a role in clathrin-coated pit (CCP) formation. It binds to many proteins through its multidomain structure and facilitate the assembly of multimeric complexes. ITSN2 also functions as a specific GEF for Cdc42 activation in epithelial morphogenesis, and is required in mitotic spindle orientation. It exists in alternatively spliced short and long isoforms. The short isoform contains two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoform, in addition, contains RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. The third SH3 domain (SH3C) of ITSN2 has been shown to bind the K15 protein of Kaposi's sarcoma-associated herpesvirus. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212925  Cd Length: 52  Bit Score: 41.53  E-value: 1.65e-05
                          10        20        30        40        50
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gi 1789691051 199 YRAMYDYSAQDEDEVSFRDGDYIVNVQPiDDGWMYGTVQrtGRTGMLPANYI 250
Cdd:cd11992     2 YIALYPYSSSEPGDLTFNEGEEILVTQK-DGEWWTGSIE--DRTGIFPSNYV 50
SH3_Nbp2-like cd11865
Src Homology 3 domain of Saccharomyces cerevisiae Nap1-binding protein 2 and similar fungal ...
201-252 2.24e-05

Src Homology 3 domain of Saccharomyces cerevisiae Nap1-binding protein 2 and similar fungal proteins; This subfamily includes Saccharomyces cerevisiae Nbp2 (Nucleosome assembly protein 1 (Nap1)-binding protein 2), Schizosaccharomyces pombe Skb5, and similar proteins. Nbp2 interacts with Nap1, which is essential for maintaining proper nucleosome structures in transcription and replication. It is also the binding partner of the yeast type II protein phosphatase Ptc1p and serves as a scaffolding protein that brings seven kinases in close contact to Ptc1p. Nbp2 plays a role many cell processes including organelle inheritance, mating hormone response, cell wall stress, mitotic cell growth at elevated temperatures, and high osmolarity. Skb5 interacts with the p21-activated kinase (PAK) homolog Shk1, which is critical for fission yeast cell viability. Skb5 activates Shk1 and plays a role in regulating cell morphology and growth under hypertonic conditions. Nbp2 and Skb5 contain an SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212799  Cd Length: 55  Bit Score: 40.96  E-value: 2.24e-05
                          10        20        30        40        50
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gi 1789691051 201 AMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQRTGRTGMLPANYIEF 252
Cdd:cd11865     4 ALYDFEPEHDNELGFAEGQILFILYKHGQGWLIAEDESGGKTGLVPEEFVSY 55
LIM_Mical_like_2 cd09445
This domain belongs to the LIM domain family which are found on Mical (molecule interacting ...
9-41 2.29e-05

This domain belongs to the LIM domain family which are found on Mical (molecule interacting with CasL) like proteins; The LIM domain on proteins of unknown function: This domain belongs to the LIM domain family which are found on Mical (molecule interacting with CasL)-like proteins. Known members of the Mical-like family includes single LIM domain containing proteins, Mical (molecule interacting with CasL), pollen specific protein SF3, Eplin, xin actin-binding repeat-containing protein 2 (XIRP2), and Ltd-1. The members of this family function mainly at the cytoskeleton and focal adhesions. They interact with transcription factors or other signaling molecules to play roles in muscle development, neuronal differentiation, cell growth, and mobility. As in other LIM domains, this domain family is 50-60 amino acids in size and shares two characteristic zinc finger motifs. The two zinc fingers contain eight conserved residues, mostly cysteines and histidines, which coordinately bond to two zinc atoms. LIM domains function as adaptors or scaffolds to support the assembly of multimeric protein.


Pssm-ID: 188829 [Multi-domain]  Cd Length: 53  Bit Score: 40.91  E-value: 2.29e-05
                          10        20        30
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gi 1789691051   9 WHKGCFHCEVCKMALNMNNYKGYEKKPYCNAHY 41
Cdd:cd09445    21 YHKNCFRCKDCNKQLKVDNYQSHEGNLYCKVHF 53
SH3_GRB2_N cd11946
N-terminal Src homology 3 domain of Growth factor receptor-bound protein 2; GRB2 is a critical ...
201-251 2.99e-05

N-terminal Src homology 3 domain of Growth factor receptor-bound protein 2; GRB2 is a critical signaling molecule that regulates the Ras pathway by linking tyrosine kinases to the Ras guanine nucleotide releasing protein Sos (son of sevenless), which converts Ras to the active GTP-bound state. It is ubiquitously expressed in all tissues throughout development and is important in cell cycle progression, motility, morphogenesis, and angiogenesis. In lymphocytes, GRB2 is associated with antigen receptor signaling components. GRB2 contains an N-terminal SH3 domain, a central SH2 domain, and a C-terminal SH3 domain. Its N-terminal SH3 domain binds to Sos and Sos-derived proline-rich peptides. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212879 [Multi-domain]  Cd Length: 56  Bit Score: 40.78  E-value: 2.99e-05
                          10        20        30        40        50
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gi 1789691051 201 AMYDYSAQDEDEVSFRDGDY--IVNVQpIDDGWMygTVQRTGRTGMLPANYIE 251
Cdd:cd11946     5 AKYDFKATADDELSFKRGDIlkVLNEE-CDQNWY--KAELNGKDGFIPKNYIE 54
SH3_Pex13p_fungal cd11771
Src Homology 3 domain of fungal peroxisomal membrane protein Pex13p; Pex13p, located in the ...
200-251 3.00e-05

Src Homology 3 domain of fungal peroxisomal membrane protein Pex13p; Pex13p, located in the peroxisomal membrane, contains two transmembrane regions and a C-terminal SH3 domain. It binds to the peroxisomal targeting type I (PTS1) receptor Pex5p and the docking factor Pex14p through its SH3 domain. It is essential for both PTS1 and PTS2 protein import pathways into the peroxisomal matrix. Pex13p binds Pex14p, which contains a PxxP motif, in a classical fashion to the proline-rich ligand binding site of its SH3 domain. It binds the WxxxF/Y motif of Pex5p in a novel site that does not compete with Pex14p binding. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212705 [Multi-domain]  Cd Length: 60  Bit Score: 40.72  E-value: 3.00e-05
                          10        20        30        40        50
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gi 1789691051 200 RAMYDY-SAQDEDEVSFRDGDYIVNVQPID-----DGWMYGTvQRTGRTGMLPANYIE 251
Cdd:cd11771     3 RALYDFtPENPEMELSLKKGDIVAVLSKTDplgrdSEWWKGR-TRDGRIGWFPSNYVE 59
SH3_Vinexin_1 cd11921
First Src Homology 3 domain of Vinexin, also called Sorbin and SH3 domain containing 3 (Sorbs3) ...
197-253 3.05e-05

First Src Homology 3 domain of Vinexin, also called Sorbin and SH3 domain containing 3 (Sorbs3); Vinexin is also called Sorbs3, SH3P3, and SH3-containing adapter molecule 1 (SCAM-1). It is an adaptor protein containing one sorbin homology (SoHo) and three SH3 domains. Vinexin was first identified as a vinculin binding protein; it is co-localized with vinculin at cell-ECM and cell-cell adhesion sites. There are several splice variants of vinexin: alpha, which contains the SoHo and three SH3 domains and displays tissue-specific expression; and beta, which contains only the three SH3 domains and is widely expressed. Vinexin alpha stimulates the accumulation of F-actin at focal contact sites. Vinexin also promotes keratinocyte migration and wound healing. The SH3 domains of vinexin have been reported to bind a number of ligands including vinculin, WAVE2, DLG5, Abl, and Cbl. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212854  Cd Length: 55  Bit Score: 40.68  E-value: 3.05e-05
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gi 1789691051 197 RTYRAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGtvQRTGRTGMLPANYIEFV 253
Cdd:cd11921     1 KAARLKFDFQAQSPKELTLQKGDIVYIHKEVDKNWLEG--EHHGRVGIFPANYVEVL 55
SH3_srGAP cd11809
Src homology 3 domain of Slit-Robo GTPase Activating Proteins; Slit-Robo GTPase Activating ...
201-252 3.18e-05

Src homology 3 domain of Slit-Robo GTPase Activating Proteins; Slit-Robo GTPase Activating Proteins (srGAPs) are Rho GAPs that interact with Robo1, the transmembrane receptor of Slit proteins. Slit proteins are secreted proteins that control axon guidance and the migration of neurons and leukocytes. Vertebrates contain three isoforms of srGAPs (srGAP1-3), all of which are expressed during embryonic and early development in the nervous system but with different localization and timing. A fourth member has also been reported (srGAP4, also called ARHGAP4). srGAPs contain an N-terminal F-BAR domain, a Rho GAP domain, and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212743 [Multi-domain]  Cd Length: 53  Bit Score: 40.46  E-value: 3.18e-05
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gi 1789691051 201 AMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQrtGRTGMLPANYIEF 252
Cdd:cd11809     4 AQFDYTGRSERELSFKKGDSLTLYRQVSDDWWRGQLN--GQDGLVPHKYITL 53
SH3_GRAF2 cd12065
Src Homology 3 domain of GTPase Regulator Associated with Focal adhesion kinase 2; GRAF2, also ...
200-252 3.37e-05

Src Homology 3 domain of GTPase Regulator Associated with Focal adhesion kinase 2; GRAF2, also called Rho GTPase activating protein 10 (ARHGAP10) or PS-GAP, is a GAP with activity towards Cdc42 and RhoA. It regulates caspase-activated p21-activated protein kinase-2 (PAK-2p34). GRAF2 interacts with PAK-2p34, leading to its stabilization and decrease of cell death. It is highly expressed in skeletal muscle, and is involved in alpha-catenin recruitment at cell-cell junctions. GRAF2 contains an N-terminal BAR domain, followed by a Pleckstrin homology (PH) domain, a Rho GAP domain, and a C-terminal SH3 domain. The SH3 domain of GRAF binds PKNbeta, a target of the small GTPase Rho. SH3 domains bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs; they play a role in the regulation of enzymes by intramolecular interactions, changing the subcellular localization of signal pathway components and mediate multiprotein complex assemblies.


Pssm-ID: 212998 [Multi-domain]  Cd Length: 54  Bit Score: 40.36  E-value: 3.37e-05
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gi 1789691051 200 RAMYDYSAQDEDEVSFRDGDYIVNVQ-PIDDGWMYGTVQrtGRTGMLPANYIEF 252
Cdd:cd12065     3 KAVYPCEAEHSSELSFEVGAIFEDVTlSREPGWLEGTLN--GKRGLIPENYVEI 54
SH3_Tks4_2 cd12076
Second Src homology 3 domain of Tyrosine kinase substrate with four SH3 domains; Tks4, also ...
199-251 3.68e-05

Second Src homology 3 domain of Tyrosine kinase substrate with four SH3 domains; Tks4, also called SH3 and PX domain-containing protein 2B (SH3PXD2B) or HOFI, is a Src substrate and scaffolding protein that plays an important role in the formation of podosomes and invadopodia, the dynamic actin-rich structures that are related to cell migration and cancer cell invasion. It is required in the formation of functional podosomes, EGF-induced membrane ruffling, and lamellipodia generation. It plays an important role in cellular attachment and cell spreading. Tks4 is essential for the localization of MT1-MMP (membrane-type 1 matrix metalloproteinase) to invadopodia. It contains an N-terminal Phox homology (PX) domain and four SH3 domains. This model characterizes the second SH3 domain of Tks4. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 213009 [Multi-domain]  Cd Length: 54  Bit Score: 40.40  E-value: 3.68e-05
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gi 1789691051 199 YRAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMygTVQRTGRTGMLPANYIE 251
Cdd:cd12076     3 YTVIYPYTARDQDEINLEKGAVVEVIQKNLEGWW--KIRYQGKEGWAPASYLK 53
SH3_GRAP_N cd11948
N-terminal Src homology 3 domain of GRB2-related adaptor protein; GRAP is a GRB-2 like adaptor ...
201-251 3.95e-05

N-terminal Src homology 3 domain of GRB2-related adaptor protein; GRAP is a GRB-2 like adaptor protein that is highly expressed in lymphoid tissues. It acts as a negative regulator of T cell receptor (TCR)-induced lymphocyte proliferation by downregulating the signaling to the Ras/ERK pathway. It has been identified as a regulator of TGFbeta signaling in diabetic kidney tubules and may have a role in the pathogenesis of the disease. GRAP contains an N-terminal SH3 domain, a central SH2 domain, and a C-terminal SH3 domain. The N-terminal SH3 domain of the related protein GRB2 binds to Sos and Sos-derived proline-rich peptides. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212881 [Multi-domain]  Cd Length: 54  Bit Score: 40.18  E-value: 3.95e-05
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gi 1789691051 201 AMYDYSAQDEDEVSFRDGDY--IVNVQPiDDGWMYGTVQrtGRTGMLPANYIE 251
Cdd:cd11948     4 ALYSFQATESDELPFQKGDIlkILNMED-DQNWYKAELQ--GREGYIPKNYIK 53
SH3_PRMT2 cd11806
Src homology 3 domain of Protein arginine N-methyltransferase 2; PRMT2, also called HRMT1L1, ...
199-250 3.99e-05

Src homology 3 domain of Protein arginine N-methyltransferase 2; PRMT2, also called HRMT1L1, belongs to the arginine methyltransferase protein family. It functions as a coactivator to both estrogen receptor alpha (ER-alpha) and androgen receptor (AR), presumably through arginine methylation. The ER-alpha transcription factor is involved in cell proliferation, differentiation, morphogenesis, and apoptosis, and is also implicated in the development and progression of breast cancer. PRMT2 and its variants are upregulated in breast cancer cells and may be involved in modulating the ER-alpha signaling pathway during formation of breast cancer. PRMT2 also plays a role in regulating the function of E2F transcription factors, which are critical cell cycle regulators, by binding to the retinoblastoma gene product (RB). It contains an N-terminal SH3 domain and an AdoMet binding domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212740 [Multi-domain]  Cd Length: 53  Bit Score: 40.45  E-value: 3.99e-05
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gi 1789691051 199 YRAMYDYSAQDEDEVSFRDGDYI-VNVQPIDDGWMygtVQRTGRTGMLPANYI 250
Cdd:cd11806     2 YVAIADFVATDDSQLSFESGDKLlVLRKPSVDWWW---AEHNGCCGYIPASHL 51
SH3_p47phox_1 cd12021
First or N-terminal Src homology 3 domain of the p47phox subunit of NADPH oxidase, also called ...
198-251 5.74e-05

First or N-terminal Src homology 3 domain of the p47phox subunit of NADPH oxidase, also called Neutrophil Cytosolic Factor 1; p47phox, or NCF1, is a cytosolic subunit of the phagocytic NADPH oxidase complex (also called Nox2 or gp91phox), which plays a key role in the ability of phagocytes to defend against bacterial infections. NADPH oxidase catalyzes the transfer of electrons from NADPH to oxygen during phagocytosis forming superoxide and reactive oxygen species. p47phox is required for activation of NADH oxidase and plays a role in translocation. It contains an N-terminal Phox homology (PX) domain, tandem SH3 domains (N-SH3 and C-SH3), a polybasic/autoinhibitory region, and a C-terminal proline-rich region (PRR). This model characterizes the first SH3 domain (or N-SH3) of p47phox. In its inactive state, the tandem SH3 domains interact intramolecularly with the autoinhibitory region; upon activation, the tandem SH3 domains are exposed through a conformational change, resulting in their binding to the PRR of p22phox and the activation of NADPH oxidase. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212954 [Multi-domain]  Cd Length: 53  Bit Score: 39.94  E-value: 5.74e-05
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gi 1789691051 198 TYRAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYgtVQRTGRTGMLPANYIE 251
Cdd:cd12021     1 TYRAIADYEKSSKSEMALKTGDVVEVVEKSENGWWF--CQLKAKRGWVPASYLE 52
SH3_RIM-BP_3 cd12013
Third Src homology 3 domain of Rab3-interacting molecules (RIMs) binding proteins; RIMs ...
199-251 5.94e-05

Third Src homology 3 domain of Rab3-interacting molecules (RIMs) binding proteins; RIMs binding proteins (RBPs, RIM-BPs) associate with calcium channels present in photoreceptors, neurons, and hair cells; they interact simultaneously with specific calcium channel subunits, and active zone proteins, RIM1 and RIM2. RIMs are part of the matrix at the presynaptic active zone and are associated with synaptic vesicles through their interaction with the small GTPase Rab3. RIM-BPs play a role in regulating synaptic transmission by serving as adaptors and linking calcium channels with the synaptic vesicle release machinery. RIM-BPs contain three SH3 domains and two to three fibronectin III repeats. Invertebrates contain one, while vertebrates contain at least two RIM-BPs, RIM-BP1 and RIM-BP2. RIM-BP1 is also called peripheral-type benzodiazapine receptor associated protein 1 (PRAX-1). Mammals contain a third protein, RIM-BP3. RIM-BP1 and RIM-BP2 are predominantly expressed in the brain where they display overlapping but distinct expression patterns, while RIM-BP3 is almost exclusively expressed in the testis and is essential in spermiogenesis. The SH3 domains of RIM-BPs bind to the PxxP motifs of RIM1, RIM2, and L-type (alpha1D) and N-type (alpha1B) calcium channel subunits. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212946  Cd Length: 61  Bit Score: 40.06  E-value: 5.94e-05
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gi 1789691051 199 YRAMYDYSAQD-------EDEVSFRDGDYIVNVQPID-DGWMYGtvQRTGRTGMLPANYIE 251
Cdd:cd12013     2 MVALFDYDPREsspnvdaEVELSFRAGDIITVFGEMDeDGFYYG--ELNGQRGLVPSNFLE 60
SH3_ARHGEF16_26 cd11938
Src homology 3 domain of the Rho guanine nucleotide exchange factors ARHGEF16 and ARHGEF26; ...
205-252 6.63e-05

Src homology 3 domain of the Rho guanine nucleotide exchange factors ARHGEF16 and ARHGEF26; ARHGEF16, also called ephexin-4, acts as a GEF for RhoG, activating it by exchanging bound GDP for free GTP. RhoG is a small GTPase that is a crucial regulator of Rac in migrating cells. ARHGEF16 interacts directly with the ephrin receptor EphA2 and mediates cell migration and invasion in breast cancer cells by activating RhoG. ARHGEF26, also called SGEF (SH3 domain-containing guanine exchange factor), also activates RhoG. It is highly expressed in liver and may play a role in regulating membrane dynamics. ARHGEF16 and ARHGEF26 contain RhoGEF (also called Dbl-homologous or DH), Pleckstrin Homology (PH), and SH3 domains. The SH3 domains of ARHGEFs play an autoinhibitory role through intramolecular interactions with a proline-rich region N-terminal to the DH domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212871  Cd Length: 55  Bit Score: 39.83  E-value: 6.63e-05
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gi 1789691051 205 YSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQRTGRTGMLPANYIEF 252
Cdd:cd11938     8 YTAKQPDELSLQQADVVLVLQTESDGWYYGERLRDGERGWFPSSCAKE 55
SH3_JIP1_like cd11801
Src homology 3 domain of JNK-interacting proteins 1 and 2, and similar domains; ...
198-250 7.16e-05

Src homology 3 domain of JNK-interacting proteins 1 and 2, and similar domains; JNK-interacting proteins (JIPs) function as scaffolding proteins for c-Jun N-terminal kinase (JNK) signaling pathways. They bind to components of Mitogen-activated protein kinase (MAPK) pathways such as JNK, MKK, and several MAP3Ks such as MLK and DLK. There are four JIPs (JIP1-4); all contain a JNK binding domain. JIP1 and JIP2 also contain SH3 and Phosphotyrosine-binding (PTB) domains. Both are highly expressed in the brain and pancreatic beta-cells. JIP1 functions as an adaptor linking motor to cargo during axonal transport and also is involved in regulating insulin secretion. JIP2 form complexes with fibroblast growth factor homologous factors (FHFs), which facilitates activation of the p38delta MAPK. The SH3 domain of JIP1 homodimerizes at the interface usually involved in proline-rich ligand recognition, despite the lack of this motif in the domain itself. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212735  Cd Length: 55  Bit Score: 39.60  E-value: 7.16e-05
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gi 1789691051 198 TYRAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQRTGRTGMLPANYI 250
Cdd:cd11801     1 THRALHKFIPRHEDEIELDIGDPVYVEQEADDLWCEGTNLRTGQRGIFPAAYV 53
SH3_FCHSD1_2 cd11895
Second Src Homology 3 domain of FCH and double SH3 domains protein 1; FCHSD1 has a domain ...
200-251 7.27e-05

Second Src Homology 3 domain of FCH and double SH3 domains protein 1; FCHSD1 has a domain structure consisting of an N-terminal F-BAR (FES-CIP4 Homology and Bin/Amphiphysin/Rvs), two SH3, and C-terminal proline-rich domains. It has only been characterized in silico and its function is unknown. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212828  Cd Length: 58  Bit Score: 39.56  E-value: 7.27e-05
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gi 1789691051 200 RAMYDYSAQDEDEVSFRDGdYIVNVQP-----IDDGWMYGTVQrtGRTGMLPANYIE 251
Cdd:cd11895     3 RALYSYTGQSPEELSFPEG-ALIRLLPraqdgVDDGFWRGEFG--GRVGVFPSLLVE 56
SH3_2 pfam07653
Variant SH3 domain; SH3 (Src homology 3) domains are often indicative of a protein involved in ...
199-253 8.04e-05

Variant SH3 domain; SH3 (Src homology 3) domains are often indicative of a protein involved in signal transduction related to cytoskeletal organization. First described in the Src cytoplasmic tyrosine kinase. The structure is a partly opened beta barrel.


Pssm-ID: 429575 [Multi-domain]  Cd Length: 54  Bit Score: 39.50  E-value: 8.04e-05
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gi 1789691051 199 YRAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGtvQRTGRTGMLPANYIEFV 253
Cdd:pfam07653   2 GRVIFDYVGTDKNGLTLKKGDVVKVLGKDNDGWWEG--ETGGRVGLVPSTAVEEI 54
SH3_ASPP1 cd11954
Src Homology 3 domain of Apoptosis Stimulating of p53 protein 1; ASPP1, like ASPP2, activates ...
201-250 8.59e-05

Src Homology 3 domain of Apoptosis Stimulating of p53 protein 1; ASPP1, like ASPP2, activates the apoptotic function of the p53 family of tumor suppressors (p53, p63, and p73). In addition, it functions in the cytoplasm to regulate the nuclear localization of the transcriptional cofactors YAP and TAZ by inihibiting their phosphorylation; YAP and TAZ are important regulators of cell expansion, differentiation, migration, and invasion. ASPP1 is downregulated in breast tumors expressing wild-type p53. It contains a proline-rich region, four ankyrin (ANK) repeats, and an SH3 domain at its C-terminal half. The SH3 domain and the ANK repeats of ASPP1 contribute to the p53 binding site; they bind to the DNA binding domain of p53. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212887 [Multi-domain]  Cd Length: 57  Bit Score: 39.62  E-value: 8.59e-05
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gi 1789691051 201 AMYDYSAQDEDEVSFRDGDYIVNVQPIDDG---WMYGTVqrTGRTGMLPANYI 250
Cdd:cd11954     5 ALWDYEAQNADELSFQEGDAITILRRKDDSeteWWWARL--NDKEGYVPKNLL 55
SH3_Sla1p_2 cd11774
Second Src Homology 3 domain of the fungal endocytic adaptor protein Sla1p; Sla1p facilitates ...
200-250 9.01e-05

Second Src Homology 3 domain of the fungal endocytic adaptor protein Sla1p; Sla1p facilitates endocytosis by playing a role as an adaptor protein in coupling components of the actin cytoskeleton to the endocytic machinery. It interacts with Abp1p, Las17p and Pan1p, which are activator proteins of actin-related protein 2/3 (Arp2/3). Sla1p contains multiple domains including three SH3 domains, a SAM (sterile alpha motif) domain, and a Sla1 homology domain 1 (SHD1), which binds to the NPFXD motif that is found in many integral membrane proteins such as the Golgi-localized Arf-binding protein Lsb5p and the P4-ATPases, Drs2p and Dnf1p. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212708 [Multi-domain]  Cd Length: 52  Bit Score: 39.37  E-value: 9.01e-05
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gi 1789691051 200 RAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYgtVQRTGRT-GMLPANYI 250
Cdd:cd11774     3 KALYDYDKQTEEELSFNEGDTLDVYDDSDSDWIL--VGFNGTQfGFVPANYI 52
SH3_Irsp53 cd11915
Src Homology 3 domain of Insulin Receptor tyrosine kinase Substrate p53; IRSp53 is also known ...
200-249 9.78e-05

Src Homology 3 domain of Insulin Receptor tyrosine kinase Substrate p53; IRSp53 is also known as BAIAP2 (Brain-specific Angiogenesis Inhibitor 1-Associated Protein 2). It is a scaffolding protein that takes part in many signaling pathways including Cdc42-induced filopodia formation, Rac-mediated lamellipodia extension, and spine morphogenesis. IRSp53 exists as multiple splicing variants that differ mainly at the C-termini. One variant (T-form) is expressed exclusively in human breast cancer cells. The gene encoding IRSp53 is a putative susceptibility gene for Gilles de la Tourette syndrome. IRSp53 can also mediate the recruitment of effector proteins Tir and EspFu, which regulate host cell actin reorganization, to bacterial attachment sites. It contains an N-terminal IMD, a CRIB (Cdc42 and Rac interactive binding motif), an SH3 domain, and a WASP homology 2 (WH2) actin-binding motif at the C-terminus. The SH3 domain of IRSp53 has been shown to bind the proline-rich C-terminus of EspFu. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212848  Cd Length: 59  Bit Score: 39.23  E-value: 9.78e-05
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gi 1789691051 200 RAMYDYSAQDEDEV-SFRDGDYIVNVQP-IDDGWMYGTVQRTGRTGMLPANY 249
Cdd:cd11915     4 QAIFSHAAGDNSTLlSFKEGDYITLLVPeARDGWHYGECEKTKMRGWFPFSY 55
SH3_Tks5_2 cd12077
Second Src homology 3 domain of Tyrosine kinase substrate with five SH3 domains; Tks5, also ...
199-251 9.79e-05

Second Src homology 3 domain of Tyrosine kinase substrate with five SH3 domains; Tks5, also called SH3 and PX domain-containing protein 2A (SH3PXD2A) or Five SH (FISH), is a scaffolding protein and Src substrate that is localized in podosomes, which are electron-dense structures found in Src-transformed fibroblasts, osteoclasts, macrophages, and some invasive cancer cells. It binds and regulates some members of the ADAMs family of transmembrane metalloproteases, which function as sheddases and mediators of cell and matrix interactions. It is required for podosome formation, degradation of the extracellular matrix, and cancer cell invasion. Tks5 contains an N-terminal Phox homology (PX) domain and five SH3 domains. This model characterizes the second SH3 domain of Tks5. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 213010  Cd Length: 54  Bit Score: 39.24  E-value: 9.79e-05
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gi 1789691051 199 YRAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYgtVQRTGRTGMLPANYIE 251
Cdd:cd12077     3 YVTVQPYTSQGKDEIGFEKGVTVEVIQKNLEGWWY--IRYLGKEGWAPASYLK 53
SH3_SH3TC cd11885
Src Homology 3 domain of SH3 domain and tetratricopeptide repeat-containing (SH3TC) proteins ...
198-250 1.01e-04

Src Homology 3 domain of SH3 domain and tetratricopeptide repeat-containing (SH3TC) proteins and similar domains; This subfamily is composed of vertebrate SH3TC proteins and hypothetical fungal proteins containing BAR and SH3 domains. Mammals contain two SH3TC proteins, SH3TC1 and SH3TC2. The function of SH3TC1 is unknown. SH3TC2 is localized in Schwann cells in the peripheral nervous system, where it interacts with Rab11 and plays a role in peripheral nerve myelination. Mutations in SH3TC2 are associated with Charcot-Marie-Tooth disease type 4C, a severe hereditary peripheral neuropathy with symptoms that include progressive scoliosis, delayed age of walking, muscular atrophy, distal weakness, and reduced nerve conduction velocity. SH3 domains bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs; they play a role in the regulation of enzymes by intramolecular interactions, changing the subcellular localization of signal pathway components and mediate multiprotein complex assemblies.


Pssm-ID: 212818  Cd Length: 55  Bit Score: 39.22  E-value: 1.01e-04
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gi 1789691051 198 TYRAMYDYSAQDEDEVSFRDGDYIVNVQPIDDG--WMYGTVQRTGRTGMLPANYI 250
Cdd:cd11885     1 SCTAKMDFEGVEPGELSFRQGDSIEIIGDLIPGlqWFVGRSKSSGRVGFVPTNHF 55
SH3_EFS cd12003
Src homology 3 domain of CAS (Crk-Associated Substrate) scaffolding protein family member, ...
200-253 1.01e-04

Src homology 3 domain of CAS (Crk-Associated Substrate) scaffolding protein family member, Embryonal Fyn-associated Substrate; EFS is also called HEFS, CASS3 (Cas scaffolding protein family member 3) or SIN (Src-interacting protein). It was identified based on interactions with the Src kinases, Fyn and Yes. It plays a role in thymocyte development and acts as a negative regulator of T cell proliferation. CAS proteins function as molecular scaffolds to regulate protein complexes that are involved in many cellular processes. They share a common domain structure that includes an N-terminal SH3 domain, an unstructured substrate domain that contains many YxxP motifs, a serine-rich four-helix bundle, and a FAT-like C-terminal domain. The SH3 domain of CAS proteins binds to diverse partners including FAK, FRNK, Pyk2, PTP-PEST, DOCK180, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212936  Cd Length: 62  Bit Score: 39.49  E-value: 1.01e-04
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gi 1789691051 200 RAMYDYSAQDEDEVSFRDGDYIVNVQ---PIDDGWMYGTVQrtGRTGMLPANYIEFV 253
Cdd:cd12003     4 KALYDNAAESPEELSFRRGDVLMVLKrehGSLPGWWLCSLH--GQQGIAPANRLRLL 58
SH3_VAV3_2 cd11978
C-terminal (or second) Src homology 3 domain of VAV3 protein; VAV3 is ubiquitously expressed ...
201-251 1.06e-04

C-terminal (or second) Src homology 3 domain of VAV3 protein; VAV3 is ubiquitously expressed and functions as a phosphorylation-dependent guanine nucleotide exchange factor (GEF) for RhoA, RhoG, and Rac1. It has been implicated to function in the hematopoietic, bone, cerebellar, and cardiovascular systems. VAV3 is essential in axon guidance in neurons that control blood pressure and respiration. It is overexpressed in prostate cancer cells and it plays a role in regulating androgen receptor transcriptional activity. VAV proteins contain several domains that enable their function: N-terminal calponin homology (CH), acidic, RhoGEF (also called Dbl-homologous or DH), Pleckstrin Homology (PH), C1 (zinc finger), SH2, and two SH3 domains. The SH3 domain of VAV is involved in the localization of proteins to specific sites within the cell, by interacting with proline-rich sequences within target proteins. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212911 [Multi-domain]  Cd Length: 56  Bit Score: 39.24  E-value: 1.06e-04
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|..
gi 1789691051 201 AMYDYSAQDEDEVSFRDGDYI-VNVQPIDDGWMYGTVQrtGRTGMLPANYIE 251
Cdd:cd11978     5 ARYDFCARDMRELSLLKGDVVkIYTKMSTNGWWRGEVN--GRVGWFPSTYVE 54
SH3_p67phox-like_C cd11870
C-terminal Src Homology 3 domain of the p67phox subunit of NADPH oxidase and similar proteins; ...
201-251 1.07e-04

C-terminal Src Homology 3 domain of the p67phox subunit of NADPH oxidase and similar proteins; This subfamily is composed of p67phox, NADPH oxidase activator 1 (Noxa1), and similar proteins. p67phox, also called Neutrophil cytosol factor 2 (NCF-2), and Noxa1 are homologs and are the cytosolic subunits of the phagocytic (Nox2) and nonphagocytic (Nox1) NADPH oxidase complexes, respectively. NADPH oxidase catalyzes the transfer of electrons from NADPH to oxygen during phagocytosis forming superoxide and reactive oxygen species. p67phox and Noxa1 play regulatory roles. p67phox contains N-terminal TPR, first SH3 (or N-terminal or central SH3), PB1, and C-terminal SH3 domains. Noxa1 has a similar domain architecture except it is lacking the N-terminal SH3 domain. The TPR domain of both binds activated GTP-bound Rac, while the C-terminal SH3 domain of p67phox and Noxa1 binds the polyproline motif found at the C-terminus of p47phox and Noxo1, respectively. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212803 [Multi-domain]  Cd Length: 53  Bit Score: 39.05  E-value: 1.07e-04
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|.
gi 1789691051 201 AMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGtvQRTGRTGMLPANYIE 251
Cdd:cd11870     4 ALHRYEAQGPEDLGFREGDTIDVLSEVNEAWLEG--HSDGRVGIFPKCFVV 52
SH3_Intersectin_4 cd11839
Fourth Src homology 3 domain (or SH3D) of Intersectin; Intersectins (ITSNs) are adaptor ...
200-251 1.15e-04

Fourth Src homology 3 domain (or SH3D) of Intersectin; Intersectins (ITSNs) are adaptor proteins that function in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. They are essential for initiating clathrin-coated pit formation. They bind to many proteins through their multidomain structure and facilitate the assembly of multimeric complexes. Vertebrates contain two ITSN proteins, ITSN1 and ITSN2, which exist in alternatively spliced short and long isoforms. The short isoforms contain two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoforms, in addition, contain RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. ITSN1 and ITSN2 are both widely expressed, with variations depending on tissue type and stage of development. The fourth SH3 domain (or SH3D) of ITSN1 has been shown to bind SHIP2, Numb, CdGAP, and N-WASP. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212773 [Multi-domain]  Cd Length: 58  Bit Score: 39.24  E-value: 1.15e-04
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....*
gi 1789691051 200 RAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQRTG---RTGMLPANYIE 251
Cdd:cd11839     3 QVIAPFTATAENQLSLAVGQLVLVRKKSPSGWWEGELQARGkkrQIGWFPANYVK 57
LIM pfam00412
LIM domain; This family represents two copies of the LIM structural domain.
8-41 1.45e-04

LIM domain; This family represents two copies of the LIM structural domain.


Pssm-ID: 395333 [Multi-domain]  Cd Length: 57  Bit Score: 38.85  E-value: 1.45e-04
                          10        20        30
                  ....*....|....*....|....*....|....
gi 1789691051   8 YWHKGCFHCEVCKMALNMNNYKGYEKKPYCNAHY 41
Cdd:pfam00412  20 VWHPECFRCAVCGKPLTTGDFYEKDGKLYCKHDY 53
LIM_CRP_like cd09326
The LIM domains of Cysteine Rich Protein (CRP) family; The LIM domains of Cysteine Rich ...
8-41 1.45e-04

The LIM domains of Cysteine Rich Protein (CRP) family; The LIM domains of Cysteine Rich Protein (CRP) family: Cysteine-rich proteins (CRPs) are characterized by the presence of two LIM domains linked to a short glycine-rich repeats (GRRs). The known CRP family members include CRP1, CRP2, and CRP3/MLP. CRP1, CRP2 and CRP3 share a conserved nuclear targeting signal (K/R-K/R-Y-G-P-K), which supports the fact that these proteins function not only in the cytoplasm but also in the nucleus. CRPs control regulatory pathways during cellular differentiation, and involve in complex transcription control, and the organization as well as the arrangement of the myofibrillar/cytoskeletal network. CRP1, CRP2, and CRP3/MLP are involved in promoting protein assembly along the actin-based cytoskeleton. All LIM domains are 50-60 amino acids in size and share two characteristic zinc finger motifs. The two zinc fingers contain eight conserved residues, mostly cysteines and histidines, which coordinately bond to two zinc atoms. LIM domains function as adaptors or scaffolds to support the assembly of multimeric protein complexes.


Pssm-ID: 188712  Cd Length: 53  Bit Score: 38.73  E-value: 1.45e-04
                          10        20        30
                  ....*....|....*....|....*....|....
gi 1789691051   8 YWHKGCFHCEVCKMALNMNNYKGYEKKPYCNAHY 41
Cdd:cd09326    20 SWHKSCFTCAVCNKRLDSTTLAEHDGEIYCKSCY 53
SH3_p40phox cd11869
Src Homology 3 domain of the p40phox subunit of NADPH oxidase; p40phox, also called Neutrophil ...
201-253 1.50e-04

Src Homology 3 domain of the p40phox subunit of NADPH oxidase; p40phox, also called Neutrophil cytosol factor 4 (NCF-4), is a cytosolic subunit of the phagocytic NADPH oxidase complex (also called Nox2 or gp91phox) which plays a crucial role in the cellular response to bacterial infection. NADPH oxidase catalyzes the transfer of electrons from NADPH to oxygen during phagocytosis forming superoxide and reactive oxygen species. p40phox positively regulates NADPH oxidase in both phosphatidylinositol-3-phosphate (PI3P)-dependent and PI3P-independent manner. It contains an N-terminal PX domain, a central SH3 domain, and a C-terminal PB1 domain that interacts with p67phox. The SH3 domain of p40phox binds to canonical polyproline and noncanonical motifs at the C-terminus of p47phox. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212802  Cd Length: 54  Bit Score: 38.63  E-value: 1.50e-04
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|...
gi 1789691051 201 AMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQrtGRTGMLPANYIEFV 253
Cdd:cd11869     4 ALFDFTGNSKLELNFKAGDVIFLLSRVNKDWLEGTVR--GATGIFPLSFVKII 54
SH3_Bbc1 cd11887
Src Homology 3 domain of Bbc1 and similar domains; This subfamily is composed of Saccharomyces ...
198-251 1.62e-04

Src Homology 3 domain of Bbc1 and similar domains; This subfamily is composed of Saccharomyces cerevisiae Bbc1p, also called Mti1p (Myosin tail region-interacting protein), and similar proteins. Bbc1p interacts with and regulates type I myosins in yeast, Myo3p and Myo5p, which are involved in actin cytoskeletal reorganization. It also binds and inhibits Las17, a WASp family protein that functions as an activator of the Arp2/3 complex. Bbc1p contains an N-terminal SH3 domain. SH3 domains bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs; they play a role in the regulation of enzymes by intramolecular interactions, changing the subcellular localization of signal pathway components and mediate multiprotein complex assemblies.


Pssm-ID: 212820 [Multi-domain]  Cd Length: 60  Bit Score: 38.86  E-value: 1.62e-04
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....*..
gi 1789691051 198 TYRAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQR---TGRTGMLPANYIE 251
Cdd:cd11887     3 KVKALYPYESDHEDDLNFDVGQLITVTEEEDADWYFGEYVDsngNTKEGIFPKNFVE 59
SH3_Noxa1_C cd12047
C-terminal Src Homology 3 domain of NADPH oxidase activator 1; Noxa1 is a homolog of p67phox ...
200-246 1.71e-04

C-terminal Src Homology 3 domain of NADPH oxidase activator 1; Noxa1 is a homolog of p67phox and is a cytosolic subunit of the nonphagocytic NADPH oxidase complex Nox1, which catalyzes the transfer of electrons from NADPH to molecular oxygen to form superoxide. Noxa1 is co-expressed with Nox1 in colon, stomach, uterus, prostate, and vascular smooth muscle cells, consistent with its regulatory role. It does not interact with p40phox, unlike p67phox, making Nox1 activity independent of p40phox, unlike Nox2. Noxa1 contains TPR, PB1, and C-terminal SH3 domains, but lacks the central SH3 domain that is present in p67phox. The TPR domain binds activated GTP-bound Rac. The C-terminal SH3 domain binds the polyproline motif found at the C-terminus of Noxo1, a homolog of p47phox. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212980  Cd Length: 53  Bit Score: 38.65  E-value: 1.71e-04
                          10        20        30        40
                  ....*....|....*....|....*....|....*....|....*..
gi 1789691051 200 RAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQrtGRTGMLP 246
Cdd:cd12047     3 VAQHDYSAQGPEDLEFSQGDTIDILSEVNQEWLEGHCD--GRIGIFP 47
SH3_VAV2_2 cd11977
C-terminal (or second) Src homology 3 domain of VAV2 protein; VAV2 is widely expressed and ...
198-251 1.73e-04

C-terminal (or second) Src homology 3 domain of VAV2 protein; VAV2 is widely expressed and functions as a guanine nucleotide exchange factor (GEF) for RhoA, RhoB and RhoG and also activates Rac1 and Cdc42. It is implicated in many cellular and physiological functions including blood pressure control, eye development, neurite outgrowth and branching, EGFR endocytosis and degradation, and cell cluster morphology, among others. It has been reported to associate with Nek3. VAV proteins contain several domains that enable their function: N-terminal calponin homology (CH), acidic, RhoGEF (also called Dbl-homologous or DH), Pleckstrin Homology (PH), C1 (zinc finger), SH2, and two SH3 domains. The SH3 domain of VAV is involved in the localization of proteins to specific sites within the cell, by interacting with proline-rich sequences within target proteins. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212910 [Multi-domain]  Cd Length: 58  Bit Score: 38.84  E-value: 1.73e-04
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....*.
gi 1789691051 198 TYRAMYDYSAQDEDEVSFRDGDYIVNVQPI--DDGWMYGtvQRTGRTGMLPANYIE 251
Cdd:cd11977     2 TAVARYNFAARDMRELSLREGDVVRIYSRIggDQGWWKG--ETNGRIGWFPSTYVE 55
SH3_SH3YL1_like cd11841
Src homology 3 domain of SH3 domain containing Ysc84-like 1 (SH3YL1) protein; SH3YL1 localizes ...
201-250 1.87e-04

Src homology 3 domain of SH3 domain containing Ysc84-like 1 (SH3YL1) protein; SH3YL1 localizes to the plasma membrane and is required for dorsal ruffle formation. It binds phosphoinositides (PIs) with high affinity through its N-terminal SYLF domain (also called DUF500). In addition, SH3YL1 contains a C-terminal SH3 domain which has been reported to bind to N-WASP, dynamin 2, and SHIP2 (a PI 5-phosphatase). SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212775  Cd Length: 54  Bit Score: 38.53  E-value: 1.87e-04
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|..
gi 1789691051 201 AMYDYSAQDEDEVSFRDGDYIVNVQPID--DGWMYGTVQrtGRTGMLPANYI 250
Cdd:cd11841     4 ALYSFEGQQPCDLSFQAGDRITVLTRTDsqFDWWEGRLR--GRVGIFPANYV 53
SH3_Endophilin_B1 cd11945
Src homology 3 domain of Endophilin-B1; Endophilin-B1, also called Bax-interacting factor 1 ...
195-254 2.30e-04

Src homology 3 domain of Endophilin-B1; Endophilin-B1, also called Bax-interacting factor 1 (Bif-1) or SH3GLB1 (SH3-domain GRB2-like endophilin B1), is localized mainly to the Golgi apparatus. It is involved in the regulation of many biological events including autophagy, tumorigenesis, nerve growth factor (NGF) trafficking, neurite outgrowth, mitochondrial outer membrane dynamics, and cell death. Endophilins play roles in synaptic vesicle formation, virus budding, mitochondrial morphology maintenance, receptor-mediated endocytosis inhibition, and endosomal sorting. They contain an N-terminal N-BAR domain (BAR domain with an additional N-terminal amphipathic helix), followed by a variable region containing proline clusters, and a C-terminal SH3 domain. Endophilin-B1 forms homo- and heterodimers (with endophilin-B2) through its BAR domain. It interacts with amphiphysin 1 and dynamin 1 through its SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212878  Cd Length: 61  Bit Score: 38.47  E-value: 2.30e-04
                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|..
gi 1789691051 195 NLRTYRAMYDYSAQDEDEVSFRDGDYIV--NVQPIDDGWMYGtvQRTGRTGMLPANYIEFVN 254
Cdd:cd11945     2 GSRKARVLYDYDAANSTELSLLADEVITvySVPGMDSDWLMG--ERGNQKGKVPITYLELLN 61
SH3_CAS cd11844
Src homology 3 domain of CAS (Crk-Associated Substrate) scaffolding proteins; CAS proteins ...
200-251 2.39e-04

Src homology 3 domain of CAS (Crk-Associated Substrate) scaffolding proteins; CAS proteins function as molecular scaffolds to regulate protein complexes that are involved in many cellular processes including migration, chemotaxis, apoptosis, differentiation, and progenitor cell function. They mediate the signaling of integrins at focal adhesions where they localize, and thus, regulate cell invasion and survival. Over-expression of these proteins is implicated in poor prognosis, increased metastasis, and resistance to chemotherapeutics in many cancers such as breast, lung, melanoma, and glioblastoma. CAS proteins have also been linked to the pathogenesis of inflammatory disorders, Alzheimer's, Parkinson's, and developmental defects. They share a common domain structure that includes an N-terminal SH3 domain, an unstructured substrate domain that contains many YxxP motifs, a serine-rich four-helix bundle, and a FAT-like C-terminal domain. Vertebrates contain four CAS proteins: BCAR1 (or p130Cas), NEDD9 (or HEF1), EFS (or SIN), and CASS4 (or HEPL). The SH3 domain of CAS proteins binds to diverse partners including FAK, FRNK, Pyk2, PTP-PEST, DOCK180, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212778  Cd Length: 56  Bit Score: 38.10  E-value: 2.39e-04
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....*
gi 1789691051 200 RAMYDYSAQDEDEVSFRDGDYIVNVQ---PIDDGWMygTVQRTGRTGMLPANYIE 251
Cdd:cd11844     3 RALYDNVAESPDELAFRRGDILTVLEqntAGLEGWW--LCSLRGRQGIAPGNRLK 55
SH3_CASS4 cd12000
Src homology 3 domain of CAS (Crk-Associated Substrate) scaffolding protein family member 4; ...
200-251 2.42e-04

Src homology 3 domain of CAS (Crk-Associated Substrate) scaffolding protein family member 4; CASS4, also called HEPL (HEF1-EFS-p130Cas-like), localizes to focal adhesions and plays a role in regulating FAK activity, focal adhesion integrity, and cell spreading. It is most abundant in blood cells and lung tissue, and is also found in high levels in leukemia and ovarian cell lines. CAS proteins function as molecular scaffolds to regulate protein complexes that are involved in many cellular processes. They share a common domain structure that includes an N-terminal SH3 domain, an unstructured substrate domain that contains many YxxP motifs, a serine-rich four-helix bundle, and a FAT-like C-terminal domain. The SH3 domain of CAS proteins binds to diverse partners including FAK, FRNK, Pyk2, PTP-PEST, DOCK180, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212933  Cd Length: 57  Bit Score: 38.32  E-value: 2.42e-04
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....*
gi 1789691051 200 RAMYDYSAQDEDEVSFRDGDYIVNVQ---PIDDGWMYGTVQrtGRTGMLPANYIE 251
Cdd:cd12000     4 RALYDNKADCSDELAFRRGDILTVLEqnvPGSEGWWKCLLH--GRQGLAPANRLQ 56
SH3_GAS7 cd11829
Src homology 3 domain of Growth Arrest Specific protein 7; GAS7 is mainly expressed in the ...
200-250 2.51e-04

Src homology 3 domain of Growth Arrest Specific protein 7; GAS7 is mainly expressed in the brain and is required for neurite outgrowth. It may also play a role in the protection and migration of embryonic stem cells. Treatment-related acute myeloid leukemia (AML) has been reported resulting from mixed-lineage leukemia (MLL)-GAS7 translocations as a complication of primary cancer treatment. GAS7 contains an N-terminal SH3 domain, followed by a WW domain, and a central F-BAR domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212763 [Multi-domain]  Cd Length: 52  Bit Score: 37.88  E-value: 2.51e-04
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|..
gi 1789691051 200 RAMYDYSA-QDEDEVSFRDGDYIVNVQPIDDGWMYGtvQRTGRTGMLPANYI 250
Cdd:cd11829     3 RTLYAFTGeQHQQGLSFEAGELIRVLQAPDGGWWEG--EKDGLRGWFPASYV 52
SH3_BCAR1 cd12001
Src homology 3 domain of the CAS (Crk-Associated Substrate) scaffolding protein family member, ...
200-253 2.60e-04

Src homology 3 domain of the CAS (Crk-Associated Substrate) scaffolding protein family member, Breast Cancer Anti-estrogen Resistance 1; BCAR1, also called p130cas or CASS1, is the founding member of the CAS family of scaffolding proteins and was originally identified through its ability to associate with Crk. The name BCAR1 was designated because the human gene was identified in a screen for genes that promote resistance to tamoxifen. It is widely expressed and its deletion is lethal in mice. It plays a role in regulating cell motility, survival, proliferation, transformation, cancer progression, and bacterial pathogenesis. CAS proteins function as molecular scaffolds to regulate protein complexes that are involved in many cellular processes. They share a common domain structure that includes an N-terminal SH3 domain, an unstructured substrate domain that contains many YxxP motifs, a serine-rich four-helix bundle, and a FAT-like C-terminal domain. The SH3 domain of CAS proteins binds to diverse partners including FAK, FRNK, Pyk2, PTP-PEST, DOCK180, among others. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212934  Cd Length: 68  Bit Score: 38.48  E-value: 2.60e-04
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....*...
gi 1789691051 200 RAMYDYSAQDEDEVSFRDGDyIVNVQPID----DGWMYGTVQrtGRTGMLPANYIEFV 253
Cdd:cd12001     6 KALYDNVAESPDELSFRKGD-IMTVLERDtqglDGWWLCSLH--GRQGIVPGNRLKIL 60
SH3_SNX9 cd11898
Src Homology 3 domain of Sorting nexin 9; Sorting nexin 9 (SNX9), also known as SH3PX1, is a ...
200-253 2.63e-04

Src Homology 3 domain of Sorting nexin 9; Sorting nexin 9 (SNX9), also known as SH3PX1, is a cytosolic protein that interacts with proteins associated with clathrin-coated pits such as Cdc-42-associated tyrosine kinase 2 (ACK2). It binds class I polyproline sequences found in dynamin 1/2 and the WASP/N-WASP actin regulators. SNX9 is localized to plasma membrane endocytic sites and acts primarily in clathrin-mediated endocytosis. Its array of interacting partners suggests that SNX9 functions at the interface between endocytosis and actin cytoskeletal organization. SNXs are Phox homology (PX) domain containing proteins that are involved in regulating membrane traffic and protein sorting in the endosomal system. SNX9 also contains BAR and SH3 domains. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212831  Cd Length: 57  Bit Score: 37.92  E-value: 2.63e-04
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....*.
gi 1789691051 200 RAMYDYSAQ-DEDEVSFRDGDYI-VNVQPIDDGWMYGTVQRtGRTGMLPANYIEFV 253
Cdd:cd11898     3 RVLYDFAAEpGNNELTVKEGEIItVTNPNVGGGWIEAKNSQ-GERGLVPTDYVEIV 57
SH3_Eve1_2 cd11815
Second Src homology 3 domain of ADAM-binding protein Eve-1; Eve-1, also called SH3 ...
202-251 2.70e-04

Second Src homology 3 domain of ADAM-binding protein Eve-1; Eve-1, also called SH3 domain-containing protein 19 (SH3D19) or EEN-binding protein (EBP), exists in multiple alternatively spliced isoforms. The longest isoform contains five SH3 domain in the C-terminal region and seven proline-rich motifs in the N-terminal region. It is abundantly expressed in skeletal muscle and heart, and may be involved in regulating the activity of ADAMs (A disintegrin and metalloproteases). Eve-1 interacts with EEN, an endophilin involved in endocytosis and may be the target of the MLL-EEN fusion protein that is implicated in leukemogenesis. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212749 [Multi-domain]  Cd Length: 52  Bit Score: 37.93  E-value: 2.70e-04
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|
gi 1789691051 202 MYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQrtGRTGMLPANYIE 251
Cdd:cd11815     5 LHDFPAEHSDDLSLNSGEIVYLLEKIDTEWYRGKCK--NTTGIFPANHVK 52
SH3_ARHGEF5_19 cd11940
Src homology 3 domain of the Rho guanine nucleotide exchange factors ARHGEF5 and ARHGEF19; ...
205-252 2.96e-04

Src homology 3 domain of the Rho guanine nucleotide exchange factors ARHGEF5 and ARHGEF19; ARHGEF5, also called ephexin-3 or TIM (Transforming immortalized mammary oncogene), is a potent activator of RhoA and it plays roles in regulating cell shape, adhesion, and migration. It binds to the SH3 domain of Src and is involved in regulating Src-induced podosome formation. ARHGEF19, also called ephexin-2 or WGEF (weak-similarity GEF), is highly expressed in the intestine, liver, heart and kidney. It activates RhoA, Cdc42, and Rac 1, and has been shown to activate RhoA in the Wnt-PCP (planar cell polarity) pathway. It is involved in the regulation of cell polarity and cytoskeletal reorganization. ARHGEF5 and ARHGEF19 contain RhoGEF (also called Dbl-homologous or DH), Pleckstrin Homology (PH), and SH3 domains. The SH3 domains of ARHGEFs play an autoinhibitory role through intramolecular interactions with a proline-rich region N-terminal to the DH domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212873  Cd Length: 55  Bit Score: 37.85  E-value: 2.96e-04
                          10        20        30        40
                  ....*....|....*....|....*....|....*....|....*...
gi 1789691051 205 YSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQRTGRTGMLPANYIEF 252
Cdd:cd11940     8 YKAQENDELTLEKADIIMVRQQSSDGWLEGVRLSDGERGWFPQSHVEE 55
SH3_RUSC1_like cd11810
Src homology 3 domain of RUN and SH3 domain-containing proteins 1 and 2; RUSC1 and RUSC2, that ...
200-249 3.19e-04

Src homology 3 domain of RUN and SH3 domain-containing proteins 1 and 2; RUSC1 and RUSC2, that were originally characterized in silico. They are adaptor proteins consisting of RUN, leucine zipper, and SH3 domains. RUSC1, also called NESCA (New molecule containing SH3 at the carboxy-terminus), is highly expressed in the brain and is translocated to the nuclear membrane from the cytoplasm upon stimulation with neurotrophin. It plays a role in facilitating neurotrophin-dependent neurite outgrowth. It also interacts with NEMO (or IKKgamma) and may function in NEMO-mediated activation of NF-kB. RUSC2, also called Iporin, is expressed ubiquitously with highest amounts in the brain and testis. It interacts with the small GTPase Rab1 and the Golgi matrix protein GM130, and may function in linking GTPases to certain intracellular signaling pathways. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212744  Cd Length: 50  Bit Score: 37.81  E-value: 3.19e-04
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|
gi 1789691051 200 RAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTvqRTGRTGMLPANY 249
Cdd:cd11810     3 RALCHHVATDSGQLSFRKGDILRVIARVDDDWLLCT--RGSTKGLVPLSY 50
SH3_SH3RF2_1 cd11929
First Src Homology 3 domain of SH3 domain containing ring finger 2; SH3RF2 is also called ...
200-251 3.35e-04

First Src Homology 3 domain of SH3 domain containing ring finger 2; SH3RF2 is also called POSHER (POSH-eliminating RING protein) or HEPP1 (heart protein phosphatase 1-binding protein). It acts as an anti-apoptotic regulator of the JNK pathway by binding to and promoting the degradation of SH3RF1 (or POSH), a scaffold protein that is required for pro-apoptotic JNK activation. It may also play a role in cardiac functions together with protein phosphatase 1. SH3RF2 contains an N-terminal RING finger domain and three SH3 domains. This model represents the first SH3 domain, located at the N-terminal half, of SH3RF2. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212862  Cd Length: 54  Bit Score: 37.61  E-value: 3.35e-04
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|..
gi 1789691051 200 RAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQRTgrTGMLPANYIE 251
Cdd:cd11929     4 KALCNYRGHNPGDLKFNKGDVILLRRQLDENWYLGEINGV--SGIFPASSVE 53
LIM_CRIP cd09478
The LIM domain of Cysteine-Rich Intestinal Protein (CRIP); The LIM domain of Cysteine-Rich ...
9-38 3.36e-04

The LIM domain of Cysteine-Rich Intestinal Protein (CRIP); The LIM domain of Cysteine-Rich Intestinal Protein (CRIP): CRIP is a short protein with only one LIM domain. CRIP gene is developmentally regulated and can be induced by glucocorticoid hormones during the first three postnatal weeks. The domain shows close sequence homology to LIM domain of thymus LIM protein. However, unlike the TLP proteins which have two LIM domains, the members of this family have only one LIM domain. LIM domains are 50-60 amino acids in size and share two characteristic zinc finger motifs. The two zinc fingers contain eight conserved residues, mostly cysteines and histidines, which coordinately bond to two zinc atoms. LIM domains function as adaptors or scaffolds to support the assembly of multimeric protein complexes.


Pssm-ID: 188862  Cd Length: 54  Bit Score: 37.55  E-value: 3.36e-04
                          10        20        30
                  ....*....|....*....|....*....|
gi 1789691051   9 WHKGCFHCEVCKMALNMNNYKGYEKKPYCN 38
Cdd:cd09478    21 WHRPCLKCEKCGKTLTPGSHAEHDGKPYCN 50
SH3_Bin1 cd12139
Src Homology 3 domain of Bridging integrator 1 (Bin1), also called Amphiphysin-2; Bin1 ...
200-234 3.46e-04

Src Homology 3 domain of Bridging integrator 1 (Bin1), also called Amphiphysin-2; Bin1 isoforms are localized in many different tissues and may function in intracellular vesicle trafficking. It plays a role in the organization and maintenance of the T-tubule network in skeletal muscle. Mutations in Bin1 are associated with autosomal recessive centronuclear myopathy. Bin1 contains an N-terminal BAR domain with an additional N-terminal amphipathic helix (an N-BAR) and a C-terminal SH3 domain. The SH3 domain of Bin1 forms transient complexes with actin, myosin filaments, and CDK5, to facilitate sarcomere organization and myofiber maturation. It also binds dynamin and prevents its self-assembly. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 213015  Cd Length: 72  Bit Score: 38.36  E-value: 3.46e-04
                          10        20        30        40
                  ....*....|....*....|....*....|....*....|
gi 1789691051 200 RAMYDYSAQDEDEVSFRDGDYIV-----NVQPIDDGWMYG 234
Cdd:cd12139     6 QAQHDYTATDTDELQLKAGDVVLvipfqNPEEQDEGWLMG 45
SH3_FCHSD_1 cd11761
First Src Homology 3 domain of FCH and double SH3 domains proteins; This group is composed of ...
201-252 3.58e-04

First Src Homology 3 domain of FCH and double SH3 domains proteins; This group is composed of FCH and double SH3 domains protein 1 (FCHSD1) and FCHSD2. These proteins have a common domain structure consisting of an N-terminal F-BAR (FES-CIP4 Homology and Bin/Amphiphysin/Rvs), two SH3, and C-terminal proline-rich domains. They have only been characterized in silico and their functions remain unknown. This group also includes the insect protein, nervous wreck, which acts as a regulator of synaptic growth signaling. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212695 [Multi-domain]  Cd Length: 57  Bit Score: 37.73  E-value: 3.58e-04
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|...
gi 1789691051 201 AMYDYSAQDEDEVSFRDGDYIVNVQPID-DGWMYGTVQRtGRTGMLPANYIEF 252
Cdd:cd11761     6 VLYSYEAQRPDELTITEGEELEVIEDGDgDGWVKARNKS-GEVGYVPENYLQF 57
SH3_FCHSD2_2 cd11894
Second Src Homology 3 domain of FCH and double SH3 domains protein 2; FCHSD2 has a domain ...
200-251 3.68e-04

Second Src Homology 3 domain of FCH and double SH3 domains protein 2; FCHSD2 has a domain structure consisting of an N-terminal F-BAR (FES-CIP4 Homology and Bin/Amphiphysin/Rvs), two SH3, and C-terminal proline-rich domains. It has only been characterized in silico and its function is unknown. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212827  Cd Length: 56  Bit Score: 37.61  E-value: 3.68e-04
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....*
gi 1789691051 200 RAMYDYSAQDEDEVSFRDGDYIVNVQ---PIDDGWMYGtvQRTGRTGMLPANYIE 251
Cdd:cd11894     3 KALYDYEGQTDDELSFPEGAIIRILNkenQDDDGFWEG--EFNGRIGVFPSVLVE 55
SH3_SH3RF1_1 cd11927
First Src Homology 3 domain of SH3 domain containing ring finger protein 1, an E3 ...
200-251 3.85e-04

First Src Homology 3 domain of SH3 domain containing ring finger protein 1, an E3 ubiquitin-protein ligase; SH3RF1 is also called POSH (Plenty of SH3s) or SH3MD2 (SH3 multiple domains protein 2). It is a scaffold protein that acts as an E3 ubiquitin-protein ligase. It plays a role in calcium homeostasis through the control of the ubiquitin domain protein Herp. It may also have a role in regulating death receptor mediated and JNK mediated apoptosis. SH3RF1 also enhances the ubiquitination of ROMK1 potassium channel resulting in its increased endocytosis. It contains an N-terminal RING finger domain and four SH3 domains. This model represents the first SH3 domain, located at the N-terminal half, of SH3RF1. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212860  Cd Length: 54  Bit Score: 37.62  E-value: 3.85e-04
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|..
gi 1789691051 200 RAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVqrTGRTGMLPANYIE 251
Cdd:cd11927     4 KALYNYEGKEPGDLKFSKGDIIILRRQVDENWYHGEV--NGIHGFFPTNFVQ 53
SH3_SKAP1-like cd11866
Src Homology 3 domain of Src Kinase-Associated Phosphoprotein 1 and similar proteins; This ...
199-250 4.03e-04

Src Homology 3 domain of Src Kinase-Associated Phosphoprotein 1 and similar proteins; This subfamily is composed of SKAP1, SKAP2, and similar proteins. SKAP1 and SKAP2 are immune cell-specific adaptor proteins that play roles in T- and B-cell adhesion, respectively, and are thus important in the migration of T- and B-cells to sites of inflammation and for movement during T-cell conjugation with antigen-presenting cells. Both SKAP1 and SKAP2 bind to ADAP (adhesion and degranulation-promoting adaptor protein), among many other binding partners. They contain a pleckstrin homology (PH) domain, a C-terminal SH3 domain, and several tyrosine phosphorylation sites. The SH3 domain of SKAP1 is necessary for its ability to regulate T-cell conjugation with antigen-presenting cells and the formation of LFA-1 clusters. SKAP1 binds primarily to a proline-rich region of ADAP through its SH3 domain; its degradation is regulated by ADAP. A secondary interaction occurs via the ADAP SH3 domain and the RKxxYxxY motif in SKAP1. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212800  Cd Length: 53  Bit Score: 37.41  E-value: 4.03e-04
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....
gi 1789691051 199 YRAMYDYSAQDEDEVSFRDGD--YIVNVQPIDDGWMYGTVQrtGRTGMLPANYI 250
Cdd:cd11866     2 YMGLWDCSGNEPDELSFKRGDliYIISKEYDSFGWWVGELN--GKVGLVPKDYL 53
SH3_CD2AP_3 cd12056
Third Src Homology 3 domain (SH3C) of CD2-associated protein; CD2AP, also called CMS (Cas ...
200-250 4.08e-04

Third Src Homology 3 domain (SH3C) of CD2-associated protein; CD2AP, also called CMS (Cas ligand with Multiple SH3 domains) or METS1 (Mesenchyme-to-Epithelium Transition protein with SH3 domains), is a cytosolic adaptor protein that plays a role in regulating the cytoskeleton. It is critical in cell-to-cell union necessary for kidney function. It also stabilizes the contact between a T cell and antigen-presenting cells. It is primarily expressed in podocytes at the cytoplasmic face of the slit diaphragm and serves as a linker anchoring podocin and nephrin to the actin cytoskeleton. CD2AP contains three SH3 domains, a proline-rich region, and a C-terminal coiled-coil domain. All of these domains enable CD2AP to bind various protein partners and assemble complexes that have been implicated in many different functions. This alignment model represents the third SH3 domain (SH3C) of CD2AP. SH3C has been shown to bind ubiquitin. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212989 [Multi-domain]  Cd Length: 57  Bit Score: 37.50  E-value: 4.08e-04
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|...
gi 1789691051 200 RAMYDYSAQDEDEVSFRDGDYI--VNVQPIDDGWMYGTVQrtGRTGMLPANYI 250
Cdd:cd12056     5 KALFHYEGTNEDELDFKEGEIIliISKDTGEPGWWKGELN--GKEGVFPDNFV 55
LIM1_Testin_like cd09340
The first LIM domain of Testin-like family; The first LIM domain of Testin_like family: This ...
7-41 4.18e-04

The first LIM domain of Testin-like family; The first LIM domain of Testin_like family: This family includes testin, prickle, dyxin and LIMPETin. Structurally, testin and prickle proteins contain three LIM domains at C-terminal; LIMPETin has six LIM domains; and dyxin presents only two LIM domains. However, all members of the family contain a PET protein-protein interaction domain. Testin is a cytoskeleton associated focal adhesion protein that localizes along actin stress fibers, at cell-cell-contact areas, and at focal adhesion plaques. Testin interacts with a variety of cytoskeletal proteins, including zyxin, mena, VASP, talin, and actin and it is involved in cell motility and adhesion events. Prickles have been implicated in roles of regulating tissue polarity or planar cell polarity (PCP). Dyxin involves in lung and heart development by interaction with GATA6 and blocking GATA6 activated target genes. LIMPETin might be the recombinant product of genes coding testin and four and half LIM proteins and its function is not well understood. As in other LIM domains, this domain family is 50-60 amino acids in size and shares two characteristic zinc finger motifs. The two zinc fingers contain eight conserved residues, mostly cysteines and histidines, which coordinately bond to two zinc atoms. LIM domains function as adaptors or scaffolds to support the assembly of multimeric protein complexes.


Pssm-ID: 188726  Cd Length: 58  Bit Score: 37.58  E-value: 4.18e-04
                          10        20        30
                  ....*....|....*....|....*....|....*
gi 1789691051   7 AYWHKGCFHCEVCKMALNMNNYKGYEKKPYCNAHY 41
Cdd:cd09340    24 ACWHPGCFVCETCNELLVDLIYFYHDGKIYCGRHY 58
SH3_Endophilin_B cd11802
Src homology 3 domain of Endophilin-B; Endophilins play roles in synaptic vesicle formation, ...
200-249 4.57e-04

Src homology 3 domain of Endophilin-B; Endophilins play roles in synaptic vesicle formation, virus budding, mitochondrial morphology maintenance, receptor-mediated endocytosis inhibition, and endosomal sorting. They are classified into two types, A and B. Vertebrates contain two endophilin-B isoforms. Endophilin-B proteins are cytoplasmic proteins expressed mainly in the heart, placenta, and skeletal muscle. Endophilins contain an N-terminal N-BAR domain (BAR domain with an additional N-terminal amphipathic helix), followed by a variable region containing proline clusters, and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212736 [Multi-domain]  Cd Length: 52  Bit Score: 37.27  E-value: 4.57e-04
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|..
gi 1789691051 200 RAMYDYSAQDEDEVSFRDGD--YIVNVQPIDDGWMYGtvQRTGRTGMLPANY 249
Cdd:cd11802     3 RVLYDYDAEDSTELSLLADEviTVYELPGMDEDYMMG--ERGSQRGKVPVAY 52
SH3_ARHGEF9_like cd11828
Src homology 3 domain of ARHGEF9-like Rho guanine nucleotide exchange factors; Members of this ...
201-250 5.56e-04

Src homology 3 domain of ARHGEF9-like Rho guanine nucleotide exchange factors; Members of this family contain a SH3 domain followed by RhoGEF (also called Dbl-homologous or DH) and Pleckstrin Homology (PH) domains. They include the Rho guanine nucleotide exchange factors ARHGEF9, ASEF (also called ARHGEF4), ASEF2, and similar proteins. GEFs activate small GTPases by exchanging bound GDP for free GTP. ARHGEF9 specifically activates Cdc42, while both ASEF and ASEF2 can activate Rac1 and Cdc42. ARHGEF9 is highly expressed in the brain and it interacts with gephyrin, a postsynaptic protein associated with GABA and glycine receptors. ASEF plays a role in angiogenesis and cell migration. ASEF2 is important in cell migration and adhesion dynamics. ASEF exists in an autoinhibited form and is activated upon binding of the tumor suppressor APC (adenomatous polyposis coli), leading to the activation of Rac1 or Cdc42. In its autoinhibited form, the SH3 domain of ASEF forms an extensive interface with the DH and PH domains, blocking the Rac binding site. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212762 [Multi-domain]  Cd Length: 53  Bit Score: 36.98  E-value: 5.56e-04
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|
gi 1789691051 201 AMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQrtGRTGMLPANYI 250
Cdd:cd11828     4 ALWDHVTMDPEELGFKAGDVIEVLDMSDKDWWWGSIR--DEEGWFPASFV 51
SH3_DNMBP_N4 cd11797
Fourth N-terminal Src homology 3 domain of Dynamin Binding Protein, also called Tuba; DNMBP or ...
201-246 5.62e-04

Fourth N-terminal Src homology 3 domain of Dynamin Binding Protein, also called Tuba; DNMBP or Tuba is a cdc42-specific guanine nucleotide exchange factor (GEF) that contains four N-terminal SH3 domains, a central RhoGEF [or Dbl homology (DH)] domain followed by a Bin/Amphiphysin/Rvs (BAR) domain, and two C-terminal SH3 domains. It provides a functional link between dynamin and key regulatory proteins of the actin cytoskeleton. It plays an important role in regulating cell junction configuration. The four N-terminal SH3 domains of DNMBP bind the GTPase dynamin, which plays an important role in the fission of endocytic vesicles. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212731  Cd Length: 50  Bit Score: 37.02  E-value: 5.62e-04
                          10        20        30        40
                  ....*....|....*....|....*....|....*....|....*.
gi 1789691051 201 AMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQrtGRTGMLP 246
Cdd:cd11797     4 ALYRFQALEPNELDFEVGDRIRIIATLEDGWLEGELK--GRRGIFP 47
SH3_Brk cd11847
Src homology 3 domain of Brk (Breast tumor kinase) Protein Tyrosine Kinase (PTK), also called ...
199-250 5.84e-04

Src homology 3 domain of Brk (Breast tumor kinase) Protein Tyrosine Kinase (PTK), also called PTK6; Brk is a cytoplasmic (or non-receptor) PTK with limited homology to Src kinases. It has been found to be overexpressed in a majority of breast tumors. It plays roles in normal cell differentiation, proliferation, survival, migration, and cell cycle progression. Brk substrates include RNA-binding proteins (SLM-1/2, Sam68), transcription factors (STAT3/5), and signaling molecules (Akt, paxillin, IRS-4). Src kinases in general contain an N-terminal SH4 domain with a myristoylation site, followed by SH3 and SH2 domains, a tyr kinase domain, and a regulatory C-terminal region containing a conserved tyr; they are activated by autophosphorylation at the tyr kinase domain, but are negatively regulated by phosphorylation at the C-terminal tyr by Csk (C-terminal Src Kinase). However, Brk lacks the N-terminal myristoylation site. The SH3 domain of Src kinases contributes to substrate recruitment by binding adaptor proteins/substrates, and regulation of kinase activity through an intramolecular interaction. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212781 [Multi-domain]  Cd Length: 58  Bit Score: 37.15  E-value: 5.84e-04
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....*
gi 1789691051 199 YRAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQRTGR---TGMLPANYI 250
Cdd:cd11847     2 YKALWDFKARGDEELSFQAGDQFRIAERSGDWWTALKLDRAGGvvaQGFVPNNYL 56
SH3_srGAP4 cd11956
Src homology 3 domain of Slit-Robo GTPase Activating Protein 4; srGAP4, also called ARHGAP4, ...
201-250 6.32e-04

Src homology 3 domain of Slit-Robo GTPase Activating Protein 4; srGAP4, also called ARHGAP4, is highly expressed in hematopoietic cells and may play a role in lymphocyte differentiation. It is able to stimulate the GTPase activity of Rac1, Cdc42, and RhoA. In the nervous system, srGAP4 has been detected in differentiating neurites and may be involved in axon and dendritic growth. srGAPs are Rho GAPs that interact with Robo1, the transmembrane receptor of Slit proteins. Slit proteins are secreted proteins that control axon guidance and the migration of neurons and leukocytes. srGAPs contain an N-terminal F-BAR domain, a Rho GAP domain, and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212889 [Multi-domain]  Cd Length: 55  Bit Score: 37.13  E-value: 6.32e-04
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|
gi 1789691051 201 AMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVqrTGRTGMLPANYI 250
Cdd:cd11956     6 ACFDYTGRTAQELSFKRGDVLLLHSKASSDWWRGEH--NGMRGLIPHKYI 53
SH3_CIP4-like cd11911
Src Homology 3 domain of Cdc42-Interacting Protein 4; This subfamily is composed of ...
200-252 6.39e-04

Src Homology 3 domain of Cdc42-Interacting Protein 4; This subfamily is composed of Cdc42-Interacting Protein 4 (CIP4), Formin Binding Protein 17 (FBP17), FormiN Binding Protein 1-Like (FNBP1L), and similar proteins. CIP4 and FNBP1L are Cdc42 effectors that bind Wiskott-Aldrich syndrome protein (WASP) and function in endocytosis. CIP4 and FBP17 bind to the Fas ligand and may be implicated in the inflammatory response. CIP4 may also play a role in phagocytosis. It functions downstream of Cdc42 in PDGF-dependent actin reorganization and cell migration, and also regulates the activity of PDGFRbeta. It uses Src as a substrate in regulating the invasiveness of breast tumor cells. CIP4 may also play a role in the pathogenesis of Huntington's disease. Members of this subfamily typically contain an N-terminal F-BAR (FES-CIP4 Homology and Bin/Amphiphysin/Rvs) domain, a central Cdc42-binding HR1 domain, and a C-terminal SH3 domain. The SH3 domain of CIP4 associates with Gapex-5, a Rab31 GEF. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212844 [Multi-domain]  Cd Length: 55  Bit Score: 36.85  E-value: 6.39e-04
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....*.
gi 1789691051 200 RAMYDYSAQDEDEVSFRDGDyIVNVQPID--DGWMygTVQR-TGRTGMLPANYIEF 252
Cdd:cd11911     3 TALYDFDGTSEGTLSMEEGE-ILLVLEEDggDGWT--RVRKnNGDEGYVPTSYIEV 55
SH3_ephexin1 cd11939
Src homology 3 domain of the Rho guanine nucleotide exchange factor, ephexin-1 (also called ...
205-251 6.49e-04

Src homology 3 domain of the Rho guanine nucleotide exchange factor, ephexin-1 (also called NGEF or ARHGEF27); Ephexin-1, also called NGEF (neuronal GEF) or ARHGEF27, activates RhoA, Tac1, and Cdc42 by exchanging bound GDP for free GTP. It is expressed mainly in the brain in a region associated with movement control. It regulates the stability of postsynaptic acetylcholine receptor (AChR) clusters and thus, plays a critical role in the maturation and neurotransmission of neuromuscular junctions. Ephexin-1 directly interacts with the ephrin receptor EphA4 and their coexpression enhances the ability of ephexin-1 to activate RhoA. It is required for normal axon growth and EphA-induced growth cone collapse. Ephexin-1 contains RhoGEF (also called Dbl-homologous or DH), Pleckstrin Homology (PH), and SH3 domains. The SH3 domains of ARHGEFs play an autoinhibitory role through intramolecular interactions with a proline-rich region N-terminal to the DH domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212872 [Multi-domain]  Cd Length: 55  Bit Score: 36.85  E-value: 6.49e-04
                          10        20        30        40
                  ....*....|....*....|....*....|....*....|....*..
gi 1789691051 205 YSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQRTGRTGMLPANYIE 251
Cdd:cd11939     8 YVSQEPDELSLELADVLNILDKTDDGWIFGERLHDQERGWFPSSVVE 54
SH3_Intersectin_2 cd11837
Second Src homology 3 domain (or SH3B) of Intersectin; Intersectins (ITSNs) are adaptor ...
198-250 6.91e-04

Second Src homology 3 domain (or SH3B) of Intersectin; Intersectins (ITSNs) are adaptor proteins that function in exo- and endocytosis, actin cytoskeletal reorganization, and signal transduction. They are essential for initiating clathrin-coated pit formation. They bind to many proteins through their multidomain structure and facilitate the assembly of multimeric complexes. Vertebrates contain two ITSN proteins, ITSN1 and ITSN2, which exist in alternatively spliced short and long isoforms. The short isoforms contain two Eps15 homology domains (EH1 and EH2), a coiled-coil region and five SH3 domains (SH3A-E), while the long isoforms, in addition, contain RhoGEF (also called Dbl-homologous or DH), Pleckstrin homology (PH) and C2 domains. ITSN1 and ITSN2 are both widely expressed, with variations depending on tissue type and stage of development. The second SH3 domain (or SH3B) of ITSN1 has been shown to bind WNK and CdGAP. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212771 [Multi-domain]  Cd Length: 53  Bit Score: 36.96  E-value: 6.91e-04
                          10        20        30        40        50
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gi 1789691051 198 TYRAMYDYSAQDEDEVSFRDGDyIVNVQPIDDGWMYGTVqRTGRTGMLPANYI 250
Cdd:cd11837     1 TATALYPWRAKKENHLSFAKGD-IITVLEQQEMWWFGEL-EGGEEGWFPKSYV 51
SH3_p67phox_C cd12046
C-terminal (or second) Src Homology 3 domain of the p67phox subunit of NADPH oxidase; p67phox, ...
201-251 7.70e-04

C-terminal (or second) Src Homology 3 domain of the p67phox subunit of NADPH oxidase; p67phox, also called Neutrophil cytosol factor 2 (NCF-2), is a cytosolic subunit of the phagocytic NADPH oxidase complex (also called Nox2 or gp91phox) which plays a crucial role in the cellular response to bacterial infection. NADPH oxidase catalyzes the transfer of electrons from NADPH to oxygen during phagocytosis forming superoxide and reactive oxygen species. p67phox plays a regulatory role and contains N-terminal TPR, first SH3 (or N-terminal or central SH3), PB1, and C-terminal SH3 domains. It binds, via its C-terminal SH3 domain, to a proline-rich region of p47phox and upon activation, this complex assembles with flavocytochrome b558, the Nox2-p22phox heterodimer. Concurrently, RacGTP translocates to the membrane and interacts with the TPR domain of p67phox, which leads to the activation of NADPH oxidase. The PB1 domain of p67phox binds to its partner PB1 domain in p40phox, and this facilitates the assembly of p47phox-p67phox at the membrane. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212979 [Multi-domain]  Cd Length: 53  Bit Score: 36.70  E-value: 7.70e-04
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|.
gi 1789691051 201 AMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGtvQRTGRTGMLPANYIE 251
Cdd:cd12046     4 ALFSYEASQPEDLEFQKGDVILVLSKVNEDWLEG--QCKGKIGIFPSAFVE 52
SH3_Nck2_2 cd11902
Second Src Homology 3 domain of Nck2 adaptor protein; Nck2 (also called Nckbeta or Growth ...
203-250 7.89e-04

Second Src Homology 3 domain of Nck2 adaptor protein; Nck2 (also called Nckbeta or Growth factor receptor-bound protein 4, Grb4) plays a crucial role in connecting signaling pathways of tyrosine kinase receptors and important effectors in actin dynamics and cytoskeletal remodeling. It binds neuronal signaling proteins such as ephrinB and Disabled-1 (Dab-1) exclusively. Nck adaptor proteins regulate actin cytoskeleton dynamics by linking proline-rich effector molecules to protein tyrosine kinases and phosphorylated signaling intermediates. They contain three SH3 domains and a C-terminal SH2 domain. They function downstream of the PDGFbeta receptor and are involved in Rho GTPase signaling and actin dynamics. Vertebrates contain two Nck adaptor proteins: Nck1 (also called Nckalpha) and Nck2, which show partly overlapping functions but also bind distinct targets. The second SH3 domain of Nck appears to prefer ligands containing the APxxPxR motif. SH3 domains are protein interaction domains that usually bind to proline-rich ligands with moderate affinity and selectivity, preferentially a PxxP motif. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212835 [Multi-domain]  Cd Length: 55  Bit Score: 36.91  E-value: 7.89e-04
                          10        20        30        40
                  ....*....|....*....|....*....|....*....|....*...
gi 1789691051 203 YDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQrtGRTGMLPANYI 250
Cdd:cd11902     7 FAYVAEREDELSLVKGSRVTVMEKCSDGWWRGSYN--GQIGWFPSNYV 52
SH3_p47phox_2 cd12022
Second or C-terminal Src homology 3 domain of the p47phox subunit of NADPH oxidase, also ...
199-251 8.13e-04

Second or C-terminal Src homology 3 domain of the p47phox subunit of NADPH oxidase, also called Neutrophil Cytosolic Factor 1; p47phox, or NCF1, is a cytosolic subunit of the phagocytic NADPH oxidase complex (also called Nox2 or gp91phox), which plays a key role in the ability of phagocytes to defend against bacterial infections. NADPH oxidase catalyzes the transfer of electrons from NADPH to oxygen during phagocytosis forming superoxide and reactive oxygen species. p47phox is required for activation of NADH oxidase and plays a role in translocation. It contains an N-terminal Phox homology (PX) domain, tandem SH3 domains (N-SH3 and C-SH3), a polybasic/autoinhibitory region, and a C-terminal proline-rich region (PRR). This model characterizes the second SH3 domain (or C-SH3) of p47phox. In its inactive state, the tandem SH3 domains interact intramolecularly with the autoinhibitory region; upon activation, the tandem SH3 domains are exposed through a conformational change, resulting in their binding to the PRR of p22phox and the activation of NADPH oxidase. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212955 [Multi-domain]  Cd Length: 53  Bit Score: 36.74  E-value: 8.13e-04
                          10        20        30        40        50
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gi 1789691051 199 YRAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMygTVQRTGRTGMLPANYIE 251
Cdd:cd12022     2 YITIKAYTAVEEDELTLLEGEAIEVIHKLLDGWW--VVRKGEVTGYFPSMYLQ 52
LIM1_CRP3 cd09481
The first LIM domain of Cysteine Rich Protein 3 (CRP3/MLP); The first LIM domain of Cysteine ...
9-41 8.13e-04

The first LIM domain of Cysteine Rich Protein 3 (CRP3/MLP); The first LIM domain of Cysteine Rich Protein 3 (CRP3/MLP): Cysteine-rich proteins (CRPs) are characterized by the presence of two LIM domains linked to short glycine-rich repeats (GRRs). The CRP family members include CRP1, CRP2, CRP3/MLP and TLPCRP1, CRP2 and CRP3 share a conserved nuclear targeting signal (K/R-K/R-Y-G-P-K), which supports the fact that these proteins function not only in the cytoplasm but also in the nucleus. CRPs control regulatory pathways during cellular differentiation, and involve in complex transcription circuits, and the organization as well as the arrangement of the myofibrillar/cytoskeletal network.CRP3 also called Muscle LIM Protein (MLP), which is a striated muscle-specific factor that enhances myogenic differentiation. CRP3/MLP interacts with cytoskeletal protein beta-spectrin. CRP3/MLP also interacts with the basic helix-loop-helix myogenic transcriptio n factors MyoD, myogenin, and MRF4 thereby increasing their affinity for specific DNA regulatory elements. LIM domains are 50-60 amino acids in size and share two characteristic zinc finger motifs. The two zinc fingers contain eight conserved residues, mostly cysteines and histidines, which coordinately bond to two zinc atoms. LIM domains function as adaptors or scaffolds to support the assembly of multimeric protein complexes.


Pssm-ID: 188865  Cd Length: 54  Bit Score: 36.66  E-value: 8.13e-04
                          10        20        30
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gi 1789691051   9 WHKGCFHCEVCKMALNMNNYKGYEKKPYCNAHY 41
Cdd:cd09481    22 FHKTCFICMACRKALDSTTVAAHESEIYCKTCY 54
LIM1_MLP84B_like cd09404
The LIM domain of Mlp84B and Mlp60A; The LIM domain of Mlp84B and Mlp60A: Mlp84B and Mlp60A ...
9-37 8.24e-04

The LIM domain of Mlp84B and Mlp60A; The LIM domain of Mlp84B and Mlp60A: Mlp84B and Mlp60A belong to the CRP LIM domain protein family. The Mlp84B protein contains five copies of the LIM domains, each followed by a Glycin Rich Region (GRR). However, only the first LIM domain of Mlp84B is in this family. Mlp60A exhibits only one LIM domain linked to a glycin-rich region. Mlp84B and Mlp60A are muscle specific proteins and have been implicated in muscle differentiation. While Mlp84B transcripts are enriched at the terminal ends of muscle fibers, Mlp60A transcripts are found throughout the muscle fibers. All LIM domains are 50-60 amino acids in size and share two characteristic zinc finger motifs. The two zinc fingers contain eight conserved residues, mostly cysteines and histidines, which coordinately bond to two zinc atoms. LIM domains function as adaptors or scaffolds to support the assembly of multimeric protein complexes.


Pssm-ID: 188788  Cd Length: 54  Bit Score: 36.70  E-value: 8.24e-04
                          10        20
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gi 1789691051   9 WHKGCFHCEVCKMALNMNNYKGYEKKPYC 37
Cdd:cd09404    22 WHKMCFKCGMCNKLLDSTNCAEHEGELYC 50
SH3_DNMBP_C2_like cd11800
Second C-terminal Src homology 3 domain of Dynamin Binding Protein, also called Tuba, and ...
199-250 8.24e-04

Second C-terminal Src homology 3 domain of Dynamin Binding Protein, also called Tuba, and similar domains; DNMBP or Tuba is a cdc42-specific guanine nucleotide exchange factor (GEF) that contains four N-terminal SH3 domains, a central RhoGEF [or Dbl homology (DH)] domain followed by a Bin/Amphiphysin/Rvs (BAR) domain, and two C-terminal SH3 domains. It provides a functional link between dynamin, Rho GTPase signaling, and actin dynamics. It plays an important role in regulating cell junction configuration. The C-terminal SH3 domains of DNMBP bind to N-WASP and Ena/VASP proteins, which are key regulatory proteins of the actin cytoskeleton. Also included in this subfamily is the second C-terminal SH3 domain of Rho guanine nucleotide exchange factor 37 (ARHGEF37), whose function is still unknown. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212734 [Multi-domain]  Cd Length: 57  Bit Score: 36.58  E-value: 8.24e-04
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gi 1789691051 199 YRAMYDYSAQDEDEVSFRDGDYIVNVQPID-----DGWMygtVQRTGRTGMLPANYI 250
Cdd:cd11800     2 YYALYTFEARSPGELSVTEGQVVTVLEKHDlkgnpEWWL---VEDRGKQGYVPSNYL 55
SH3_Tks_2 cd12016
Second Src homology 3 domain of Tyrosine kinase substrate (Tks) proteins; Tks proteins are Src ...
199-251 9.10e-04

Second Src homology 3 domain of Tyrosine kinase substrate (Tks) proteins; Tks proteins are Src substrates and scaffolding proteins that play important roles in the formation of podosomes and invadopodia, the dynamic actin-rich structures that are related to cell migration and cancer cell invasion. Vertebrates contain two Tks proteins, Tks4 (Tyr kinase substrate with four SH3 domains) and Tks5 (Tyr kinase substrate with five SH3 domains), which display partially overlapping but non-redundant functions. Both associate with the ADAMs family of transmembrane metalloproteases, which function as sheddases and mediators of cell and matrix interactions. Tks5 interacts with N-WASP and Nck, while Tks4 is essential for the localization of MT1-MMP (membrane-type 1 matrix metalloproteinase) to invadopodia. Tks proteins contain an N-terminal Phox homology (PX) domain and four or five SH3 domains. This model characterizes the second SH3 domain of Tks proteins. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212949  Cd Length: 54  Bit Score: 36.67  E-value: 9.10e-04
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gi 1789691051 199 YRAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYgtVQRTGRTGMLPANYIE 251
Cdd:cd12016     3 YITTQAYKAENEDEIGFETGVVVEVIQKNLDGWWK--IRYQGKEGWAPATYLK 53
SH3_ASAP2 cd11966
Src homology 3 domain of ArfGAP with SH3 domain, ankyrin repeat and PH domain containing ...
200-252 9.20e-04

Src homology 3 domain of ArfGAP with SH3 domain, ankyrin repeat and PH domain containing protein 2; ASAP2 is also called DDEF2 (Development and Differentiation Enhancing Factor 2), AMAP2, centaurin beta-3, or PAG3. It mediates the functions of Arf GTPases vial dual mechanisms: it exhibits GTPase activating protein (GAP) activity towards class I (Arf1) and II (Arf5) Arfs; and it binds class III Arfs (GTP-Arf6) stably without GAP activity. It binds paxillin and is implicated in Fcgamma receptor-mediated phagocytosis in macrophages and in cell migration. ASAP2 contains an N-terminal BAR domain, followed by a Pleckstrin homology (PH) domain, an Arf GAP domain, ankyrin (ANK) repeats, and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212899  Cd Length: 56  Bit Score: 36.47  E-value: 9.20e-04
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gi 1789691051 200 RAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQ-RTGRTGMLPANYIEF 252
Cdd:cd11966     3 KALYNCVADNPDELTFSEGEIIIVDGEEDKEWWIGHIDgEPTRRGAFPVSFVHF 56
LIM3_Paxillin_like cd09338
The third LIM domain of the paxillin like protein family; The third LIM domain of the paxillin ...
7-41 9.40e-04

The third LIM domain of the paxillin like protein family; The third LIM domain of the paxillin like protein family: This family consists of paxillin, leupaxin, Hic-5 (ARA55), and other related proteins. There are four LIM domains in the C-terminal of the proteins and leucine-rich LD-motifs in the N-terminal region. Members of this family are adaptor proteins to recruit key components of signal-transduction machinery to specific sub-cellular locations. Paxillin is found at the interface between the plasma membrane and the actin cytoskeleton. Paxillin serves as a platform for the recruitment of numerous regulatory and structural proteins that together control the dynamic changes in cell adhesion, cytoskeletal reorganization and gene expression that are necessary for cell migration and survival. Leupaxin is a cytoskeleton adaptor protein, which is preferentially expressed in hematopoietic cells. It associates with focal adhesion kinases PYK2 and pp125FAK and identified to be a component of the osteoclast pososomal signaling complex. Hic-5 controls cell proliferation, migration and senescence by functioning as coactivator for steroid receptors such as androgen receptor, glucocorticoid receptor and progesterone receptor. LIM domains are 50-60 amino acids in size and share two characteristic zinc finger motifs. The two zinc fingers contain eight conserved residues, mostly cysteines and histidines, which coordinately bond to two zinc atoms. LIM domains function as adaptors or scaffolds to support the assembly of multimeric protein complexes.


Pssm-ID: 188724 [Multi-domain]  Cd Length: 53  Bit Score: 36.54  E-value: 9.40e-04
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gi 1789691051   7 AYWHKGCFHCEVCKMALNMNNYKGYEKKPYCNAHY 41
Cdd:cd09338    18 TQWHPECFVCRECHKPFINGSFFEHEGLPYCETHY 52
LIM3_abLIM cd09329
The third LIM domain of actin binding LIM (abLIM) proteins; The third LIM domain of actin ...
9-41 9.86e-04

The third LIM domain of actin binding LIM (abLIM) proteins; The third LIM domain of actin binding LIM (abLIM) proteins: Three homologous members of the abLIM protein family have been identified; abLIM-1, abLIM-2 and abLIM-3. The N-terminal of abLIM consists of four tandem repeats of LIM domains and the C-terminal of acting binding LIM protein is a villin headpiece domain, which has strong actin binding activity. The abLIM-1, which is expressed in retina, brain, and muscle tissue, has been indicated to function as a tumor suppressor. AbLIM-2 and -3, mainly expressed in muscle and neuronal tissue, bind to F-actin strongly. They may serve as a scaffold for signaling modules of the actin cytoskeleton and thereby modulate transcription. It has shown that LIM domains of abLIMs interact with STARS (striated muscle activator of Rho signaling), which directly binds actin and stimulates serum-response factor (SRF)-dependent transcription. All LIM domains are 50-60 amino acids in size and share two characteristic highly conserved zinc finger motifs. The two zinc fingers contain eight conserved residues, mostly cysteines and histidines, which coordinately bond to two zinc atoms. LIM domains function as adaptors or scaffolds to support the assembly of multimeric protein complexes.


Pssm-ID: 188715 [Multi-domain]  Cd Length: 52  Bit Score: 36.14  E-value: 9.86e-04
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gi 1789691051   9 WHKGCFHCEVCKMALNmNNYKGYEKKPYCNAHY 41
Cdd:cd09329    21 WHVWCFKCKECGKVLT-GEYMGKDGKPYCERDY 52
LIM3_Enigma_like cd09363
The third LIM domain of Enigma-like family; The third LIM domain of Enigma-like family: The ...
9-40 1.16e-03

The third LIM domain of Enigma-like family; The third LIM domain of Enigma-like family: The Enigma LIM domain family is comprised of three members: Enigma, ENH, and Cypher (mouse)/ZASP (human). These subfamily members contain a single PDZ domain at the N-terminus and three LIM domains at the C-terminus. Enigma was initially characterized in humans and is expressed in multiple tissues, such as skeletal muscle, heart, bone, and brain. The third LIM domain specifically interacts with the insulin receptor and the second LIM domain interacts with the receptor tyrosine kinase Ret and the adaptor protein APS. Thus Enigma is implicated in signal transduction processes, such as mitogenic activity, insulin related actin organization, and glucose metabolism. The second member, ENH protein, was first identified in rat brain. It has been shown that ENH interacts with protein kinase D1 (PKD1) via its LIM domains and forms a complex with PKD1 and the alpha1C subunit of cardiac L-type voltage-gated calcium channel in rat neonatal cardiomyocytes. The N-terminal PDZ domain interacts with alpha-actinin at the Z-line. ZASP/Cypher is required for maintenance of Z-line structure during muscle contraction, but not required for Z-line assembly. In heart, Cypher/ZASP plays a structural role through its interaction with cytoskeletal Z-line proteins. In addition, there is increasing evidence that Cypher/ZASP also performs signaling functions. Studies reveal that Cypher/ZASP interacts with and directs PKC to the Z-line, where PKC phosphorylates downstream signaling targets. LIM domains are 50-60 amino acids in size and share two characteristic zinc finger motifs. The two zinc fingers contain eight conserved residues, mostly cysteines and histidines, which coordinately bond to two zinc atoms. LIM domains function as adaptors or scaffolds to support the assembly of multimeric protein complexes.


Pssm-ID: 188749 [Multi-domain]  Cd Length: 54  Bit Score: 36.26  E-value: 1.16e-03
                          10        20        30
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gi 1789691051   9 WHKGCFHCEVCKMALNMNNYKGYEKKPYCNAH 40
Cdd:cd09363    22 WHDTCFVCAVCHVNLEGQTFYSKKDKPLCKNH 53
LIM1_LIMK cd09364
The first LIM domain of LIMK (LIM domain Kinase ); The first LIM domain of LIMK (LIM domain ...
9-41 1.25e-03

The first LIM domain of LIMK (LIM domain Kinase ); The first LIM domain of LIMK (LIM domain Kinase ): LIMK protein family is comprised of two members LIMK1 and LIMK2. LIMK contains two LIM domains, a PDZ domain and a kinase domain. LIMK is involved in the regulation of actin polymerization and microtubule disassembly. LIMK influences architecture of the actin cytoskeleton by regulating the activity of the cofilin family proteins cofilin1, cofilin2, and destrin. The mechanism of the activation is to phosphorylates cofilin on serine 3 and inactivates its actin-severing activity, and altering the rate of actin depolymerisation. LIMKs can function in both cytoplasm and nucleus and are expressed in all tissues. Both LIMK1 and LIMK2 can act in the nucleus to suppress Rac/Cdc42-dependent cyclin D1 expression. However, LIMK1 and LIMk2 have different cellular locations. While LIMK1 localizes mainly at focal adhesions, LIMK2 is found in cytoplasmic punctae, suggesting that they may have different cellular functions. The LIM domains of LIMK have been shown to play an important role in regulating kinase activity and likely also contribute to LIMK function by acting as sites of protein-to-protein interactions. All LIM domains are 50-60 amino acids in size and share two characteristic zinc finger motifs. The two zinc fingers contain eight conserved residues, mostly cysteines and histidines, which coordinately bond to two zinc atoms. LIM domains function as adaptors or scaffolds to support the assembly of multimeric protein complexes.


Pssm-ID: 188750 [Multi-domain]  Cd Length: 53  Bit Score: 35.93  E-value: 1.25e-03
                          10        20        30
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gi 1789691051   9 WHKGCFHCEVCKMALNmNNYKGYEKKPYCNAHY 41
Cdd:cd09364    21 WHCDCFRCSVCSDSLS-NWYFEKDGKLYCRKDY 52
SH3_Bem1p_2 cd11879
Second Src Homology 3 domain of Bud emergence protein 1 and similar domains; Members of this ...
202-252 1.43e-03

Second Src Homology 3 domain of Bud emergence protein 1 and similar domains; Members of this subfamily bear similarity to Saccharomyces cerevisiae Bem1p, containing two Src Homology 3 (SH3) domains at the N-terminus, a central PX domain, and a C-terminal PB1 domain. Bem1p is a scaffolding protein that is critical for proper Cdc42p activation during bud formation in yeast. During budding and mating, Bem1p migrates to the plasma membrane where it can serve as an adaptor for Cdc42p and some other proteins. Bem1p also functions as an effector of the G1 cyclin Cln3p and the cyclin-dependent kinase Cdc28p in promoting vacuolar fusion. SH3 domains bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs; they play a role in the regulation of enzymes by intramolecular interactions, changing the subcellular localization of signal pathway components and mediate multiprotein complex assemblies.


Pssm-ID: 212812 [Multi-domain]  Cd Length: 56  Bit Score: 36.16  E-value: 1.43e-03
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gi 1789691051 202 MYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGT-VQRTGRTGMLPANYIEF 252
Cdd:cd11879     5 LYDFKAERPDELDAKAGDAIIICAHSNYEWFVAKpIGRLGGPGLIPVSFVEI 56
SH3_PI3K_p85beta cd11909
Src Homology 3 domain of the p85beta regulatory subunit of Class IA Phosphatidylinositol ...
199-253 1.49e-03

Src Homology 3 domain of the p85beta regulatory subunit of Class IA Phosphatidylinositol 3-kinases; Class I PI3Ks convert PtdIns(4,5)P2 to the critical second messenger PtdIns(3,4,5)P3. They are heterodimers and exist in multiple isoforms consisting of one catalytic subunit (out of four isoforms) and one of several regulatory subunits. Class IA PI3Ks associate with the p85 regulatory subunit family, which contains SH3, RhoGAP, and SH2 domains. The p85 subunits recruit the PI3K p110 catalytic subunit to the membrane, where p110 phosphorylates inositol lipids. Vertebrates harbor two p85 isoforms, called alpha and beta. In addition to regulating the p110 subunit, p85beta binds CD28 and may be involved in the activation and differentiation of antigen-stimulated T cells. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212842  Cd Length: 74  Bit Score: 36.35  E-value: 1.49e-03
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gi 1789691051 199 YRAMYDYSAQDEDEVSFRDGDYIV---------------NVQPIDDGWMYGTVQRTGRTGMLPANYIEFV 253
Cdd:cd11909     3 YRALYPYRKEREEDIDLLPGDVLTvsraalqalgvkeggEQCPQSIGWILGLNERTKQRGDFPGTYVEFL 72
SH3_DOCK1_5_A cd12051
Src Homology 3 domain of Class A Dedicator of Cytokinesis proteins 1 and 5; Dock1, also called ...
201-250 1.74e-03

Src Homology 3 domain of Class A Dedicator of Cytokinesis proteins 1 and 5; Dock1, also called Dock180, and Dock5 are class A DOCKs and are atypical guanine nucleotide exchange factors (GEFs) that lack the conventional Dbl homology (DH) domain. Dock1 interacts with the scaffold protein Elmo and the resulting complex functions upstream of Rac in many biological events including phagocytosis of apoptotic cells, cell migration and invasion. Dock5 functions upstream of Rac1 to regulate osteoclast function. All DOCKs contain two homology domains: the DHR-1 (Dock homology region-1), also called CZH1 (CED-5, Dock180, and MBC-zizimin homology 1), and DHR-2 (also called CZH2 or Docker). The DHR-1 domain binds phosphatidylinositol-3,4,5-triphosphate while DHR-2 contains the catalytic activity for Rac and/or Cdc42. Class A DOCKs also contain an SH3 domain at the N-terminal region and a PxxP motif at the C-terminus; they are specific GEFs for Rac. The SH3 domain of Dock1 binds to DHR-2 in an autoinhibitory manner; binding of Elmo to the SH3 domain of Dock1 exposes the DHR-2 domain and promotes GEF activity. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212984 [Multi-domain]  Cd Length: 56  Bit Score: 35.95  E-value: 1.74e-03
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gi 1789691051 201 AMYDYSAQDEDEVSFRDGDyIVNVQPIDDGWMYG-TVQRTGRTGMLPANYI 250
Cdd:cd12051     4 AIYNYDARGPDELSLQIGD-TVHILETYEGWYRGyTLRKKSKKGIFPASYI 53
SH3_SH3RF_2 cd11787
Second Src Homology 3 domain of SH3 domain containing ring finger proteins; This model ...
200-249 1.95e-03

Second Src Homology 3 domain of SH3 domain containing ring finger proteins; This model represents the second SH3 domain of SH3RF1 (or POSH), SH3RF2 (or POSHER), SH3RF3 (POSH2), and similar domains. Members of this family are scaffold proteins that function as E3 ubiquitin-protein ligases. They all contain an N-terminal RING finger domain and multiple SH3 domains; SH3RF1 and SH3RF3 have four SH3 domains while SH3RF2 has three. SH3RF1 plays a role in calcium homeostasis through the control of the ubiquitin domain protein Herp. It may also have a role in regulating death receptor mediated and JNK mediated apoptosis. SH3RF3 interacts with p21-activated kinase 2 (PAK2) and GTP-loaded Rac1. It may play a role in regulating JNK mediated apoptosis in certain conditions. SH3RF2 acts as an anti-apoptotic regulator of the JNK pathway by binding to and promoting the degradation of SH3RF1. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212721 [Multi-domain]  Cd Length: 53  Bit Score: 35.39  E-value: 1.95e-03
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|...
gi 1789691051 200 RAMYDYSAQDEDE---VSFRDGDYIVNVQPIDDGWMYGtvQRTGRTGMLPANY 249
Cdd:cd11787     3 KALYDFEMKDEDEkdcLTFKKGDVITVIRRVDENWAEG--RLGDKIGIFPISF 53
SH3_Stac2_C cd11985
C-terminal Src homology 3 domain of SH3 and cysteine-rich domain-containing protein 2 (Stac2); ...
198-251 2.08e-03

C-terminal Src homology 3 domain of SH3 and cysteine-rich domain-containing protein 2 (Stac2); Stac proteins are putative adaptor proteins that contain a cysteine-rich C1 domain and one or two SH3 domains at the C-terminus. There are three mammalian members (Stac1, Stac2, and Stac3) of this family. Stac2 contains a single SH3 domain at the C-terminus unlike Stac1 and Stac3, which contain two C-terminal SH3 domains. Stac1 and Stac2 have been found to be expressed differently in mature dorsal root ganglia (DRG) neurons. Stac1 is mainly expressed in peptidergic neurons while Stac2 is found in a subset of nonpeptidergic and all trkB+ neurons. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212918  Cd Length: 53  Bit Score: 35.31  E-value: 2.08e-03
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....
gi 1789691051 198 TYRAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQrtGRTGMLPANYIE 251
Cdd:cd11985     1 SYVALYKFLPQENNDLPLQPGDRVMVVDDSNEDWWKGKSG--DRVGFFPANFVQ 52
SH3_JIP1 cd11943
Src homology 3 domain of JNK-interacting protein 1; JNK-interacting protein 1 (JIP1) is also ...
198-249 2.30e-03

Src homology 3 domain of JNK-interacting protein 1; JNK-interacting protein 1 (JIP1) is also called Islet-brain 1 (IB1) or Mitogen-activated protein kinase 8-interacting protein 1 (MAPK8IP1). It is highly expressed in neurons, where it functions as an adaptor linking motor to cargo during axonal transport. It also affects microtubule dynamics in neurons. JIP1 is also found in pancreatic beta-cells, where it is involved in regulating insulin secretion. In addition to a JNK binding domain, JIP1 also contains SH3 and Phosphotyrosine-binding (PTB) domains. Its SH3 domain homodimerizes at the interface usually involved in proline-rich ligand recognition, despite the lack of this motif in the domain itself. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212876  Cd Length: 55  Bit Score: 35.35  E-value: 2.30e-03
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|...
gi 1789691051 198 TYRAMYDYSAQDEDEVSFR-DGDYIVNVQPiDDGWMYGTVQRTGRTGMLPANY 249
Cdd:cd11943     1 THRAVFRFVPRHPDELELEvDDPLLVEVQA-EDYWYEAYNMRTGARGIFPAYY 52
LIM_Eplin_like cd09442
The Lim domain of Epithelial Protein Lost in Neoplasm (Eplin) like proteins; The Lim domain of ...
9-41 2.52e-03

The Lim domain of Epithelial Protein Lost in Neoplasm (Eplin) like proteins; The Lim domain of Epithelial Protein Lost in Neoplasm (Eplin) like proteins: This family contains Epithelial Protein Lost in Neoplasm in Neoplasm (Eplin), xin actin-binding repeat-containing protein 2 (XIRP2) and a group of protein with unknown function. The members of this family all contain a single LIM domain. Epithelial Protein Lost in Neoplasm is a cytoskeleton-associated tumor suppressor whose expression inversely correlates with cell growth, motility, invasion and cancer mortality. Eplin interacts and stabilizes F-actin filaments and stress fibers, which correlates with its ability to suppress anchorage independent growth. In epithelial cells, Eplin is required for formation of the F-actin adhesion belt by binding to the E-cadherin-catenin complex through alpha-catenin. Eplin is expressed in two isoforms, a longer Eplin-beta and a shorter Eplin-alpha. Eplin-alpha mRNA is detected in various tissues and cell lines, but is absent or down regulated in cancer cells. Xirp2 contains a LIM domain and Xin re peats for binding to and stabilising F-actin. Xirp2 is expressed in muscles and is significantly induced in the heart in response to systemic administration of angiotensin II. Xirp2 is an important effector of the Ang II signaling pathway in the heart. The expression of Xirp2 is activated by myocyte enhancer factor (MEF)2A, whose transcriptional activity is stimulated by angiotersin II. Thus, Xirp2 plays important pathological roles in the angiotensin II induced hypertension. As in other LIM domains, this domain family is 50-60 amino acids in size and shares two characteristic zinc finger motifs. The two zinc fingers contain eight conserved residues, mostly cysteines and histidines, which coordinately bond to two zinc atoms. LIM domains function as adaptors or scaffolds to support the assembly of multimeric protein.


Pssm-ID: 188826 [Multi-domain]  Cd Length: 53  Bit Score: 35.15  E-value: 2.52e-03
                          10        20        30
                  ....*....|....*....|....*....|...
gi 1789691051   9 WHKGCFHCEVCKMALNMNNYKGYEKKPYCNAHY 41
Cdd:cd09442    21 FHKSCFRCEHCNSKLSLGNYASLHGRIYCKPHF 53
SH3_BAIAP2L1 cd11913
Src Homology 3 domain of Brain-specific Angiogenesis Inhibitor 1-Associated Protein 2-Like 1, ...
209-249 2.63e-03

Src Homology 3 domain of Brain-specific Angiogenesis Inhibitor 1-Associated Protein 2-Like 1, also called Insulin Receptor Tyrosine Kinase Substrate (IRTKS); BAIAP2L1 or IRTKS is widely expressed, serves as a substrate for the insulin receptor, and binds the small GTPase Rac. It plays a role in regulating the actin cytoskeleton and colocalizes with F-actin, cortactin, VASP, and vinculin. BAIAP2L1 expression leads to the formation of short actin bundles, distinct from filopodia-like protrusions induced by the expression of the related protein IRSp53. IRTKS mediates the recruitment of effector proteins Tir and EspFu, which regulate host cell actin reorganization, to bacterial attachment sites. It contains an N-terminal IMD or Inverse-Bin/Amphiphysin/Rvs (I-BAR) domain, an SH3 domain, and a WASP homology 2 (WH2) actin-binding motif at the C-terminus. The SH3 domain of IRTKS has been shown to bind the proline-rich C-terminus of EspFu. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212846  Cd Length: 58  Bit Score: 35.28  E-value: 2.63e-03
                          10        20        30        40
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gi 1789691051 209 DEDEVSFRDGDYIVNVQPID-DGWMYGTVQRTGRTGMLPANY 249
Cdd:cd11913    14 NKTLLSFAQGDVITLLIPEEkDGWLYGEHDTTKARGWFPSSY 55
SH3_Endophilin_B2 cd11944
Src homology 3 domain of Endophilin-B2; Endophilin-B2, also called SH3GLB2 (SH3-domain ...
200-252 2.87e-03

Src homology 3 domain of Endophilin-B2; Endophilin-B2, also called SH3GLB2 (SH3-domain GRB2-like endophilin B2), is a cytoplasmic protein that interacts with the apoptosis inducer Bax. It is overexpressed in prostate cancer metastasis and has been identified as a cancer antigen with potential utility in immunotherapy. Endophilins play roles in synaptic vesicle formation, virus budding, mitochondrial morphology maintenance, receptor-mediated endocytosis inhibition, and endosomal sorting. They contain an N-terminal N-BAR domain (BAR domain with an additional N-terminal amphipathic helix), followed by a variable region containing proline clusters, and a C-terminal SH3 domain. Endophilin-B2 forms homo- and heterodimers (with endophilin-B1) through its BAR domain. The related protein endophilin-B1 interacts with amphiphysin 1 and dynamin 1 through its SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212877  Cd Length: 55  Bit Score: 34.97  E-value: 2.87e-03
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....*
gi 1789691051 200 RAMYDYSAQDEDEVSFRDGDYIV--NVQPIDDGWMYGtvQRTGRTGMLPANYIEF 252
Cdd:cd11944     3 RVLYDYEAADSSELALLADELITvySLPGMDPDWLIG--ERGNQKGKVPVTYLEL 55
SH3_Nephrocystin cd11770
Src Homology 3 domain of Nephrocystin (or Nephrocystin-1); Nephrocystin contains an SH3 domain ...
199-251 3.32e-03

Src Homology 3 domain of Nephrocystin (or Nephrocystin-1); Nephrocystin contains an SH3 domain involved in signaling pathways that regulate cell adhesion and cytoskeletal organization. It is a protein that in humans is associated with juvenile nephronophthisis, an inherited kidney disease characterized by renal fibrosis that lead to chronic renal failure in children. It is localized in cell-cell junctions in renal duct cells, and is known to interact with Ack1, an activated Cdc42-associated kinase. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212704 [Multi-domain]  Cd Length: 54  Bit Score: 34.98  E-value: 3.32e-03
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|...
gi 1789691051 199 YRAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTvQRTGRTGMLPANYIE 251
Cdd:cd11770     2 YEALSDFQAEQEGDLSFKKGEVLRIISKRADGWWLAE-NSKGNRGLVPKTYLK 53
SH3_RUSC1 cd11958
Src homology 3 domain of RUN and SH3 domain-containing protein 1; RUSC1, also called NESCA ...
200-249 3.46e-03

Src homology 3 domain of RUN and SH3 domain-containing protein 1; RUSC1, also called NESCA (New molecule containing SH3 at the carboxy-terminus), is highly expressed in the brain and is translocated to the nuclear membrane from the cytoplasm upon stimulation with neurotrophin. It plays a role in facilitating neurotrophin-dependent neurite outgrowth. It also interacts with NEMO (or IKKgamma) and may function in NEMO-mediated activation of NF-kB. RUSC proteins are adaptor proteins consisting of RUN, leucine zipper, and SH3 domains. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212891 [Multi-domain]  Cd Length: 51  Bit Score: 34.81  E-value: 3.46e-03
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|
gi 1789691051 200 RAMYDYSAQdEDEVSFRDGDYIVNVQPIDDGWMygTVQRTGRTGMLPANY 249
Cdd:cd11958     3 RALCDHAGS-ESQLSFRKGEELQVLGTVDEDWI--RCRRGDREGLVPVGY 49
SH3_MYO7A cd11881
Src Homology 3 domain of Myosin VIIa and similar proteins; Myo7A is an uncoventional myosin ...
201-248 3.59e-03

Src Homology 3 domain of Myosin VIIa and similar proteins; Myo7A is an uncoventional myosin that is involved in organelle transport. It is required for sensory function in both Drosophila and mammals. Mutations in the Myo7A gene cause both syndromic deaf-blindness [Usher syndrome I (USH1)] and nonsyndromic (DFNB2 and DFNA11) deafness in humans. It contains an N-terminal motor domain, light chain-binding IQ motifs, a coiled-coil region for heavy chain dimerization, and a tail consisting of a pair of MyTH4-FERM tandems separated by a SH3 domain. SH3 domains bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs; they play a role in the regulation of enzymes by intramolecular interactions, changing the subcellular localization of signal pathway components and mediate multiprotein complex assemblies.


Pssm-ID: 212814  Cd Length: 64  Bit Score: 35.18  E-value: 3.59e-03
                          10        20        30        40        50
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gi 1789691051 201 AMYDYS--AQDEDEVSFRDGDYIV-----NVQPIDDGWMYGTVQRTGRTGMLPAN 248
Cdd:cd11881     6 ALQDYPnpSDGSSFLSFAKGDLIIldqdtGEQVMNSGWCNGRNDRTGQRGDFPAD 60
SH3_Nck_3 cd11767
Third Src Homology 3 domain of Nck adaptor proteins; This group contains the third SH3 domain ...
200-251 3.62e-03

Third Src Homology 3 domain of Nck adaptor proteins; This group contains the third SH3 domain of Nck, the first SH3 domain of Caenorhabditis elegans Ced-2 (Cell death abnormality protein 2), and similar domains. Nck adaptor proteins regulate actin cytoskeleton dynamics by linking proline-rich effector molecules to protein tyrosine kinases and phosphorylated signaling intermediates. They contain three SH3 domains and a C-terminal SH2 domain. They function downstream of the PDGFbeta receptor and are involved in Rho GTPase signaling and actin dynamics. Vertebrates contain two Nck adaptor proteins: Nck1 (also called Nckalpha) and Nck2 (also called Nckbeta or Growth factor receptor-bound protein 4, Grb4), which show partly overlapping functions but also bind distinct targets. Their SH3 domains are involved in recruiting downstream effector molecules, such as the N-WASP/Arp2/3 complex, which when activated induces actin polymerization that results in the production of pedestals, or protrusions of the plasma membrane. The third SH3 domain of Nck appears to prefer ligands with a PxAPxR motif. SH3 domains are protein interaction domains that usually bind to proline-rich ligands with moderate affinity and selectivity, preferentially a PxxP motif. Ced-2 is a cell corpse engulfment protein that interacts with Ced-5 in a pathway that regulates the activation of Ced-10, a Rac small GTPase.


Pssm-ID: 212701 [Multi-domain]  Cd Length: 56  Bit Score: 34.98  E-value: 3.62e-03
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....
gi 1789691051 200 RAMYDYSAQDEDEVSFRDGDY--IVNVQPIDDGWMYGTVQRtGRTGMLPANYIE 251
Cdd:cd11767     3 VALYPFTGENDEELSFEKGERleIIEKPEDDPDWWKARNAL-GTTGLVPRNYVE 55
SH3_SKAP2 cd12045
Src Homology 3 domain of Src Kinase-Associated Phosphoprotein 2; SKAP2, also called ...
199-250 3.81e-03

Src Homology 3 domain of Src Kinase-Associated Phosphoprotein 2; SKAP2, also called SKAP55-Related (SKAP55R) or SKAP55 homolog (SKAP-HOM or SKAP55-HOM), is an immune cell-specific adaptor protein that plays an important role in adhesion and migration of B-cells and macrophages. Binding partners include ADAP (adhesion and degranulation-promoting adaptor protein), YopH, SHPS1, and HPK1. SKAP2 has also been identified as a substrate for lymphoid-specific tyrosine phosphatase (Lyp), which has been implicated in a wide variety of autoimmune diseases. It contains a pleckstrin homology (PH) domain, a C-terminal SH3 domain, and several tyrosine phosphorylation sites. Like SKAP1, SKAP2 is expected to bind primarily to a proline-rich region of ADAP through its SH3 domain; its degradation may be regulated by ADAP. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212978  Cd Length: 53  Bit Score: 34.88  E-value: 3.81e-03
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....
gi 1789691051 199 YRAMYDYSAQDEDEVSFRDGD--YIVNVQPIDDGWMYGTVQrtGRTGMLPANYI 250
Cdd:cd12045     2 YQGLWDCTGDQPDELSFKRGDtiYILSKEYNRFGWWVGEMK--GTIGLVPKAYI 53
LIM1_CRP cd09402
The first LIM domain of Cysteine Rich Protein (CRP); The first LIM domain of Cysteine Rich ...
9-41 4.06e-03

The first LIM domain of Cysteine Rich Protein (CRP); The first LIM domain of Cysteine Rich Protein (CRP): Cysteine-rich proteins (CRPs) are characterized by the presence of two LIM domains linked to a short glycine-rich repeats (GRRs). The CRP family members include CRP1, CRP2, CRP3/MLP. CRP1, CRP2 and CRP3 share a conserved nuclear targeting signal (K/R-K/R-Y-G-P-K), which supports the fact that these proteins function not only in the cytoplasm but also in the nucleus. CRPs control regulatory pathways during cellular differentiation, and involve in complex transcription control, and the organization as well as the arrangement of the myofibrillar/cytoskeletal network. It is evident that CRP1, CRP2, and CRP3/MLP are involved in promoting protein assembly along the actin-based cytoskeleton. Although members of the CRP family share common binding partners, they are also capable of recognizing different and specific targets. LIM domains are 50-60 amino acids in size and share two characteristic zinc finger motifs. The two zinc fingers contain eight conserved residues, mostly cysteines and histidines, which coordinately bond to two zinc atoms. LIM domains function as adaptors or scaffolds to support the assembly of multimeric protein complexes.


Pssm-ID: 188786  Cd Length: 53  Bit Score: 34.56  E-value: 4.06e-03
                          10        20        30
                  ....*....|....*....|....*....|...
gi 1789691051   9 WHKGCFHCEVCKMALNMNNYKGYEKKPYCNAHY 41
Cdd:cd09402    21 FHKSCFLCMVCRKNLDSTTVAAHEDEIYCKSCY 53
LIM1_LIMPETin cd09414
The first LIM domain of protein LIMPETin; The first LIM domain of protein LIMPETin: LIMPETin ...
9-41 4.13e-03

The first LIM domain of protein LIMPETin; The first LIM domain of protein LIMPETin: LIMPETin contains 6 LIM domains at the C-terminal and an N-terminal PET domain. Four of the six LIM domains are highly homologous to the four and half LIM domain protein family and two of them show sequence similarity to the LIM domains of the Testin family. Thus, LIMPETin may be the recombinant product of genes coding testin and FHL proteins. In Schistosoma mansoni, where LIMPETin was first identified, LIMPETin is down regulated in sexually mature adult Schistosoma females compared to sexually immature adult females and adult male. Its differential expression indicates that it is a transcription regulator. LIM domains are 50-60 amino acids in size and share two characteristic zinc finger motifs. The two zinc fingers contain eight conserved residues, mostly cysteines and histidines, which coordinately bond to two zinc atoms. LIM domains function as adaptors or scaffolds to support the assembly of multimeric protein complexes.


Pssm-ID: 188798 [Multi-domain]  Cd Length: 58  Bit Score: 34.68  E-value: 4.13e-03
                          10        20        30
                  ....*....|....*....|....*....|...
gi 1789691051   9 WHKGCFHCEVCKMALNMNNYKGYEKKPYCNAHY 41
Cdd:cd09414    26 WHPACFRCSTCEELLVDLTYCVHDDQIYCERHY 58
SH3_NoxO1_2 cd12024
Second or C-terminal Src homology 3 domain of NADPH oxidase (Nox) Organizing protein 1; Nox ...
199-250 4.17e-03

Second or C-terminal Src homology 3 domain of NADPH oxidase (Nox) Organizing protein 1; Nox Organizing protein 1 (NoxO1) is a critical regulator of enzyme kinetics of the nonphagocytic NADPH oxidase Nox1, which catalyzes the transfer of electrons from NADPH to molecular oxygen to form superoxide. Nox1 is expressed in colon, stomach, uterus, prostate, and vascular smooth muscle cells. NoxO1 is involved in targeting activator subunits (such as NoxA1) to Nox1. It is co-localized with Nox1 in the membranes of resting cells and directs the subcellular localization of Nox1. NoxO1 contains an N-terminal Phox homology (PX) domain, tandem SH3 domains (N-SH3 and C-SH3), and a C-terminal proline-rich region (PRR). This model characterizes the second SH3 domain (or C-SH3) of NoxO1. The tandem SH3 domains of NoxO1 interact with the PRR of p22phox, which also complexes with Nox1. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212957  Cd Length: 53  Bit Score: 34.62  E-value: 4.17e-03
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|..
gi 1789691051 199 YRAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYgtVQRTGRTGMLPANYI 250
Cdd:cd12024     2 YYATRAYEAQKEDELSVPAGVVVEVLQKSDNGWWL--IRYNGRAGYVPSMYL 51
SH3_Sdc25 cd11883
Src Homology 3 domain of Sdc25/Cdc25 guanine nucleotide exchange factors; This subfamily is ...
200-249 4.31e-03

Src Homology 3 domain of Sdc25/Cdc25 guanine nucleotide exchange factors; This subfamily is composed of the Saccharomyces cerevisiae guanine nucleotide exchange factors (GEFs) Sdc25 and Cdc25, and similar proteins. These GEFs regulate Ras by stimulating the GDP/GTP exchange on Ras. Cdc25 is involved in the Ras/PKA pathway that plays an important role in the regulation of metabolism, stress responses, and proliferation, depending on available nutrients and conditions. Proteins in this subfamily contain an N-terminal SH3 domain as well as REM (Ras exchanger motif) and RasGEF domains at the C-terminus. SH3 domains bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs; they play a role in the regulation of enzymes by intramolecular interactions, changing the subcellular localization of signal pathway components and mediate multiprotein complex assemblies.


Pssm-ID: 212816  Cd Length: 55  Bit Score: 34.56  E-value: 4.31e-03
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....*
gi 1789691051 200 RAMYDYSAQDEDEVSFRDGD--YIVNVQPidDGWMYGTV---QRTGRTGMLPANY 249
Cdd:cd11883     3 VALYDFTPKSKNQLSFKAGDiiYVLNKDP--SGWWDGVIissSGKVKRGWFPSNY 55
SH3_RIM-BP_1 cd12014
First Src homology 3 domain of Rab3-interacting molecules (RIMs) binding proteins; RIMs ...
199-252 4.36e-03

First Src homology 3 domain of Rab3-interacting molecules (RIMs) binding proteins; RIMs binding proteins (RBPs, RIM-BPs) associate with calcium channels present in photoreceptors, neurons, and hair cells; they interact simultaneously with specific calcium channel subunits, and active zone proteins, RIM1 and RIM2. RIMs are part of the matrix at the presynaptic active zone and are associated with synaptic vesicles through their interaction with the small GTPase Rab3. RIM-BPs play a role in regulating synaptic transmission by serving as adaptors and linking calcium channels with the synaptic vesicle release machinery. RIM-BPs contain three SH3 domains and two to three fibronectin III repeats. Invertebrates contain one, while vertebrates contain at least two RIM-BPs, RIM-BP1 and RIM-BP2. RIM-BP1 is also called peripheral-type benzodiazapine receptor associated protein 1 (PRAX-1). Mammals contain a third protein, RIM-BP3. RIM-BP1 and RIM-BP2 are predominantly expressed in the brain where they display overlapping but distinct expression patterns, while RIM-BP3 is almost exclusively expressed in the testis and is essential in spermiogenesis. The SH3 domains of RIM-BPs bind to the PxxP motifs of RIM1, RIM2, and L-type (alpha1D) and N-type (alpha1B) calcium channel subunits. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212947  Cd Length: 62  Bit Score: 34.64  E-value: 4.36e-03
                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|..
gi 1789691051 199 YRAMYDY-------SAQDEDEVSFRDGDYI-VNVQPIDDGWMYGTVQrTGRTGMLPANYIEF 252
Cdd:cd12014     2 FVARYSYnplrdspNENPEAELPLNAGDYVyVYGDMDEDGFYEGELL-DGRRGLVPSNFVER 62
SH3_JIP2 cd11942
Src homology 3 domain of JNK-interacting protein 2; JNK-interacting protein 2 (JIP2) is also ...
198-249 4.78e-03

Src homology 3 domain of JNK-interacting protein 2; JNK-interacting protein 2 (JIP2) is also called Mitogen-activated protein kinase 8-interacting protein 2 (MAPK8IP2) or Islet-brain-2 (IB2). It is widely expressed in the brain, where it forms complexes with fibroblast growth factor homologous factors (FHFs), which facilitates activation of the p38delta MAPK. JIP2 is enriched in postsynaptic densities and may play a role in motor and cognitive function. In addition to a JNK binding domain, JIP2 also contains SH3 and Phosphotyrosine-binding (PTB) domains. The SH3 domain of the related protein JIP1 homodimerizes at the interface usually involved in proline-rich ligand recognition, despite the lack of this motif in the domain itself. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212875  Cd Length: 55  Bit Score: 34.52  E-value: 4.78e-03
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                  ....*....|....*....|....*....|....*....|....*....|..
gi 1789691051 198 TYRAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQRTGRTGMLPANY 249
Cdd:cd11942     1 THRAVFRFIPRHEDELELDVDDPLLVEAEEDDYWYRGYNMRTGERGIFPAFY 52
LIM1_TLP cd09476
The first LIM domain of thymus LIM protein (TLP); The first LIM domain of thymus LIM protein ...
9-42 5.02e-03

The first LIM domain of thymus LIM protein (TLP); The first LIM domain of thymus LIM protein (TLP): TLP is the distant member of the CRP family of proteins. TLP has two isomers (TLP-A and TLP-B) and sharing approximately 30% with each of the three other CRPs. Like CRP1, CRP2 and CRP3/MLP, TLP has two LIM domains, connected by a flexible linker region. Unlike the CRPs, TLP lacks the nuclear targeting signal (K/R-K/R-Y-G-P-K) and is localized solely in the cytoplasm. TLP is specifically expressed in the thymus in a subset of cortical epithelial cells. TLP has a role in development of normal thymus and in controlling the development and differentiation of thymic epithelial cells. LIM domains are 50-60 amino acids in size and share two characteristic zinc finger motifs. The two zinc fingers contain eight conserved residues, mostly cysteines and histidines, which coordinately bond to two zinc atoms. LIM domains function as adaptors or scaffolds to support the assembly of multimeric protein complexes.


Pssm-ID: 188860  Cd Length: 54  Bit Score: 34.56  E-value: 5.02e-03
                          10        20        30
                  ....*....|....*....|....*....|....
gi 1789691051   9 WHKGCFHCEVCKMALNMNNYKGYEKKPYCnaHYP 42
Cdd:cd09476    21 WHRFCLKCERCSKILSPGGHAEHDGKPYC--HKP 52
LIM5_LIMPETin cd09430
The fifth LIM domain of protein LIMPETin; The fifth LIM domain of protein LIMPETin: LIMPETin ...
9-37 5.28e-03

The fifth LIM domain of protein LIMPETin; The fifth LIM domain of protein LIMPETin: LIMPETin contains 6 LIM domains at the C-terminal and an N-terminal PET domain. Four of the six LIM domains are highly homologous to the four and half LIM domain protein family and two of them show sequence similarity to the LIM domains of the testin family. Thus, LIMPETin may be the recombinant product of genes coding testin and FHL proteins. In Schistosoma mansoni, where LIMPETin was first identified, LIMPETin is down regulated in sexually mature adult Schistosoma females compared to sexually immature adult females and adult male. Its differential expression indicates that it is a transcription regulator. LIM domains are 50-60 amino acids in size and share two characteristic zinc finger motifs. The two zinc fingers contain eight conserved residues, mostly cysteines and histidines, which coordinately bond to two zinc atoms. LIM domains function as adaptors or scaffolds to support the assembly of multimeric protein complexes.


Pssm-ID: 188814  Cd Length: 52  Bit Score: 34.37  E-value: 5.28e-03
                          10        20
                  ....*....|....*....|....*....
gi 1789691051   9 WHKGCFHCEVCKMALNMNNYKGYEKKPYC 37
Cdd:cd09430    20 WHRECFTCTNCSKSLAGQRFTSRDEKPYC 48
SH3_srGAP1-3 cd11955
Src homology 3 domain of Slit-Robo GTPase Activating Proteins 1, 2, and 3; srGAP1, also called ...
201-250 6.07e-03

Src homology 3 domain of Slit-Robo GTPase Activating Proteins 1, 2, and 3; srGAP1, also called Rho GTPase-Activating Protein 13 (ARHGAP13), is a Cdc42- and RhoA-specific GAP and is expressed later in the development of central nervous system tissues. srGAP2 is expressed in zones of neuronal differentiation. It plays a role in the regeneration of neurons and axons. srGAP3, also called MEGAP (MEntal disorder associated GTPase-Activating Protein), is a Rho GAP with activity towards Rac1 and Cdc42. It impacts cell migration by regulating actin and microtubule cytoskeletal dynamics. The association between srGAP3 haploinsufficiency and mental retardation is under debate. srGAPs are Rho GAPs that interact with Robo1, the transmembrane receptor of Slit proteins. Slit proteins are secreted proteins that control axon guidance and the migration of neurons and leukocytes. srGAPs contain an N-terminal F-BAR domain, a Rho GAP domain, and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212888 [Multi-domain]  Cd Length: 53  Bit Score: 34.15  E-value: 6.07e-03
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|
gi 1789691051 201 AMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGtvQRTGRTGMLPANYI 250
Cdd:cd11955     4 AKFDYVGRSARELSFKKGASLLLYHRASDDWWEG--RHNGIDGLVPHQYI 51
SH3_ASAP1 cd11965
Src homology 3 domain of ArfGAP with SH3 domain, ankyrin repeat and PH domain containing ...
200-253 6.17e-03

Src homology 3 domain of ArfGAP with SH3 domain, ankyrin repeat and PH domain containing protein 1; ASAP1 is also called DDEF1 (Development and Differentiation Enhancing Factor 1), AMAP1, centaurin beta-4, or PAG2. an Arf GTPase activating protein (GAP) with activity towards Arf1 and Arf5 but not Arf6. However, it has been shown to bind GTP-Arf6 stably without GAP activity. It has been implicated in cell growth, migration, and survival, as well as in tumor invasion and malignancy. It binds paxillin and cortactin, two components of invadopodia which are essential for tumor invasiveness. It also binds focal adhesion kinase (FAK) and the SH2/SH3 adaptor CrkL. ASAP1 contains an N-terminal BAR domain, followed by a Pleckstrin homology (PH) domain, an Arf GAP domain, ankyrin (ANK) repeats, and a C-terminal SH3 domain. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212898 [Multi-domain]  Cd Length: 57  Bit Score: 34.21  E-value: 6.17e-03
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....*
gi 1789691051 200 RAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQ-RTGRTGMLPANYIEFV 253
Cdd:cd11965     3 KTIYDCQADNDDELTFVEGEVIIVTGEEDQEWWIGHIEgQPERKGVFPVSFVHIL 57
LIM1_LIMK2 cd09463
The first LIM domain of LIMK2 (LIM domain Kinase 2); The first LIM domain of LIMK2 (LIM domain ...
9-41 6.31e-03

The first LIM domain of LIMK2 (LIM domain Kinase 2); The first LIM domain of LIMK2 (LIM domain Kinase 2): LIMK2 is a member of the LIMK protein family, which comprises LIMK1 and LIMK2. LIMK contains two LIM domains, a PDZ domain, and a kinase domain. LIMK is involved in the regulation of actin polymerization and microtubule disassembly. LIMK influences architecture of the actin cytoskeleton by regulating the activity of the cofilin family proteins cofilin1, cofilin2, and destrin. The mechanism of the activation is to phosphorylates cofilin on serine 3 and inactivates its actin-severing activity, altering the rate of actin depolymerization. LIMK activity is activated by phosphorylation of a threonine residue within the activation loop of the kinase by p21-activated kinases 1 and 4 and by Rho kinase. LIMKs can function in both cytoplasm and nucleus. Both LIMK1 and LIMK2 can act in the nucleus to suppress Rac/Cdc42-dependent cyclin D1 expression. LIMK2 is expressed in all tissues. While LIMK1 localizes mainly at focal adhesions, LIMK2 is found in cytoplasmic punctae, suggesting that they may have different cellular functions. The activity of LIM kinase 2 to regulate cofilin phosphorylation is inhibited by the direct binding of Par-3. LIMK2 activation promotes cell cycle progression. The phenotype of Limk2 knockout mice shows a defect in spermatogenesis. The LIM domains have been shown to play an important role in regulating kinase activity and likely also contribute to LIMK function by acting as sites of protein-to-protein interactions. All LIM domains are 50-60 amino acids in size and share two characteristic zinc finger motifs. The two zinc fingers contain eight conserved residues, mostly cysteines and histidines, which coordinately bond to two zinc atoms. LIM domains function as adaptors or scaffolds to support the assembly of multimeric protein complexes.


Pssm-ID: 188847 [Multi-domain]  Cd Length: 53  Bit Score: 34.08  E-value: 6.31e-03
                          10        20        30
                  ....*....|....*....|....*....|...
gi 1789691051   9 WHKGCFHCEVCKMALNmNNYKGYEKKPYCNAHY 41
Cdd:cd09463    21 WHNSCFQCSVCQDLLT-NWYYEKDGKLYCHKHY 52
SH3_Nck_1 cd11765
First Src Homology 3 domain of Nck adaptor proteins; Nck adaptor proteins regulate actin ...
201-250 6.36e-03

First Src Homology 3 domain of Nck adaptor proteins; Nck adaptor proteins regulate actin cytoskeleton dynamics by linking proline-rich effector molecules to protein tyrosine kinases and phosphorylated signaling intermediates. They contain three SH3 domains and a C-terminal SH2 domain. They function downstream of the PDGFbeta receptor and are involved in Rho GTPase signaling and actin dynamics. Vertebrates contain two Nck adaptor proteins: Nck1 (also called Nckalpha) and Nck2 (also called Nckbeta or Growth factor receptor-bound protein 4, Grb4), which show partly overlapping functions but also bind distinct targets. Their SH3 domains are involved in recruiting downstream effector molecules, such as the N-WASP/Arp2/3 complex, which when activated induces actin polymerization that results in the production of pedestals, or protrusions of the plasma membrane. The first SH3 domain of Nck proteins preferentially binds the PxxDY sequence, which is present in the CD3e cytoplasmic tail. This binding inhibits phosphorylation by Src kinases, resulting in the downregulation of TCR surface expression. SH3 domains are protein interaction domains that usually bind to proline-rich ligands with moderate affinity and selectivity, preferentially a PxxP motif. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212699 [Multi-domain]  Cd Length: 51  Bit Score: 33.93  E-value: 6.36e-03
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|.
gi 1789691051 201 AMYDYSAQDEDEVSFRDGDYIVnvqPIDDGWMYGTVQRT-GRTGMLPANYI 250
Cdd:cd11765     4 AKYDYTAQGDQELSIKKNEKLT---LLDDSKHWWKVQNSsNQTGYVPSNYV 51
LIM_Ltd-1 cd09443
The LIM domain of LIM and transglutaminase domains protein (Ltd-1); The LIM domain of LIM and ...
7-40 6.55e-03

The LIM domain of LIM and transglutaminase domains protein (Ltd-1); The LIM domain of LIM and transglutaminase domains protein (Ltd-1): This family includes mouse Ky protein and Caenorhabditis elegans Ltd-1 protein. The members of this family consists a N-terminal Lim domain and a C-terminal transglutaminase domain. The mouse Ky protein has putative function in muscle development. The mouse with ky mutant exhibits combined posterior and lateral curvature of the spine. The Ltd-1 gene in C. elegans is expressed in developing hypodermal cells from the twofold stage embryo through adulthood. These data define the ltd-1 gene as a novel marker for C. elegans epithelial cell development. As in other LIM domains, this domain family is 50-60 amino acids in size and shares two characteristic zinc finger motifs. The two zinc fingers contain eight conserved residues, mostly cysteines and histidines, which coordinately bond to two zinc atoms. LIM domains function as adaptors or scaffolds to support the assembly of multimeric protein.


Pssm-ID: 188827 [Multi-domain]  Cd Length: 55  Bit Score: 33.93  E-value: 6.55e-03
                          10        20        30
                  ....*....|....*....|....*....|....*.
gi 1789691051   7 AYWHKGCFHCEVCKMALNMNNYKGY--EKKPYCNAH 40
Cdd:cd09443    19 TFYHKGCFKCRECGTRLSLKTFTFVqgDGEVYCARH 54
LIM3_Paxillin cd09409
The third LIM domain of paxillin; The third LIM domain of paxillin: Paxillin is an adaptor ...
7-41 7.33e-03

The third LIM domain of paxillin; The third LIM domain of paxillin: Paxillin is an adaptor protein, which recruits key components of the signal-transduction machinery to specific sub-cellular locations to respond to environmental changes rapidly. The C-terminal region of paxillin contains four LIM domains which target paxillin to focal adhesions, presumably through a direct association with the cytoplasmic tail of beta-integrin. The N-terminal of paxillin is leucine-rich LD-motifs. Paxillin is found at the interface between the plasma membrane and the actin cytoskeleton. The binding partners of paxillin are diverse and include protein tyrosine kinases, such as Src and FAK, structural proteins, such as vinculin and actopaxin, and regulators of actin organization. Paxillin recruits these proteins to their function sites to control the dynamic changes in cell adhesion, cytoskeletal reorganization and gene expression. LIM domains are 50-60 amino acids in size and share two characteristic zinc finger motifs. The two zinc fingers contain eight conserved residues, mostly cysteines and histidines, which coordinately bond to two zinc atoms. LIM domains function as adaptors or scaffolds to support the assembly of multimeric protein complexes.


Pssm-ID: 188793 [Multi-domain]  Cd Length: 53  Bit Score: 34.05  E-value: 7.33e-03
                          10        20        30
                  ....*....|....*....|....*....|....*
gi 1789691051   7 AYWHKGCFHCEVCKMALNMNNYKGYEKKPYCNAHY 41
Cdd:cd09409    18 TLWHPECFVCRECFTPFVNGSFFEHDGQPYCEAHY 52
SH3_Fut8 cd11792
Src homology 3 domain of Alpha1,6-fucosyltransferase (Fut8); Fut8 catalyzes the alpha1, ...
200-247 7.44e-03

Src homology 3 domain of Alpha1,6-fucosyltransferase (Fut8); Fut8 catalyzes the alpha1,6-linkage of a fucose residue from a donor substrate to N-linked oligosaccharides on glycoproteins in a process called core fucosylation, which is crucial for growth factor receptor-mediated biological functions. Fut8-deficient mice show severe growth retardation, early death, and a pulmonary emphysema-like phenotype. Fut8 is also implicated to play roles in aging and cancer metastasis. It contains an N-terminal coiled-coil domain, a catalytic domain, and a C-terminal SH3 domain. The SH3 domain of Fut8 is located in the lumen and its role in glycosyl transfer is unclear. SH3 domains are protein interaction domains that bind to proline-rich ligands with moderate affinity and selectivity, preferentially to PxxP motifs. They play versatile and diverse roles in the cell including the regulation of enzymes, changing the subcellular localization of signaling pathway components, and mediating the formation of multiprotein complex assemblies.


Pssm-ID: 212726  Cd Length: 55  Bit Score: 34.11  E-value: 7.44e-03
                          10        20        30        40
                  ....*....|....*....|....*....|....*....|....*...
gi 1789691051 200 RAMYDYSAQDEDEVSFRDGDYIVNVQPIDDGWMYGTVQRTGRTGMLPA 247
Cdd:cd11792     3 VAIYPHKPRNHDEIELRVGDIIGVAGNHWDGYSKGRNRRTGKTGLYPS 50
LIM2_TLP cd09477
The second LIM domain of thymus LIM protein (TLP); The second LIM domain of thymus LIM protein ...
9-42 7.80e-03

The second LIM domain of thymus LIM protein (TLP); The second LIM domain of thymus LIM protein (TLP): TLP is the distant member of the CRP family of proteins. TLP has two isomers (TLP-A and TLP-B) and sharing approximately 30% with each of the three other CRPs. Like CRP1, CRP2 and CRP3/MLP, TLP has two LIM domains, connected by a flexible linker region. Unlike the CRPs, TLP lacks the nuclear targeting signal (K/R-K/R-Y-G-P-K) and is localized solely in the cytoplasm. TLP is specifically expressed in the thymus in a subset of cortical epithelial cells. TLP has a role in development of normal thymus and in controlling the development and differentiation of thymic epithelial cells. LIM domains are 50-60 amino acids in size and share two characteristic zinc finger motifs. The two zinc fingers contain eight conserved residues, mostly cysteines and histidines, which coordinately bond to two zinc atoms. LIM domains function as adaptors or scaffolds to support the assembly of multimeric protein complexes.


Pssm-ID: 188861  Cd Length: 54  Bit Score: 33.83  E-value: 7.80e-03
                          10        20        30
                  ....*....|....*....|....*....|....
gi 1789691051   9 WHKGCFHCEVCKMALNMNNYKGYEKKPYCnaHYP 42
Cdd:cd09477    21 WHRPCLRCQRCKKTLTAGGHAEHDGSPYC--HVP 52
NEBU smart00227
The Nebulin repeat is present also in Las1; Tandem arrays of these repeats are known to bind ...
118-143 8.23e-03

The Nebulin repeat is present also in Las1; Tandem arrays of these repeats are known to bind actin.


Pssm-ID: 128523  Cd Length: 31  Bit Score: 33.21  E-value: 8.23e-03
                           10        20
                   ....*....|....*....|....*.
gi 1789691051  118 FTPVVDDPVTERVRKNTQVVSDAAYK 143
Cdd:smart00227   1 YTSVPDTPEILLAKKNQKLISDVKYK 26
LIM2_CRP3 cd09482
The second LIM domain of Cysteine Rich Protein 3 (CRP3/MLP); The second LIM domain of Cysteine ...
9-41 8.27e-03

The second LIM domain of Cysteine Rich Protein 3 (CRP3/MLP); The second LIM domain of Cysteine Rich Protein 3 (CRP3/MLP): Cysteine-rich proteins (CRPs) are characterized by the presence of two LIM domains linked to short glycine-rich repeats (GRRs). The CRP family members include CRP1, CRP2, CRP3/MLP and TLPCRP1, CRP2 and CRP3 share a conserved nuclear targeting signal (K/R-K/R-Y-G-P-K), which supports the fact that these proteins function not only in the cytoplasm but also in the nucleus. CRPs control regulatory pathways during cellular differentiation, and involve in complex transcription circuits, and the organization as well as the arrangement of the myofibrillar/cytoskeletal network.CRP3 also called Muscle LIM Protein (MLP), which is a striated muscle-specific factor that enhances myogenic differentiation. The second LIM domain of CRP3/MLP interacts with cytoskeletal protein beta-spectrin. CRP3/MLP also interacts with the basic helix-loop-helix myogenic transcription factors MyoD, myogenin, and MRF4 thereby increasing their affinity for specific DNA regulatory elements. LIM domains are 50-60 amino acids in size and share two characteristic zinc finger motifs. The two zinc fingers contain eight conserved residues, mostly cysteines and histidines, which coordinately bond to two zinc atoms. LIM domains function as adaptors or scaffolds to support the assembly of multimeric protein complexes.


Pssm-ID: 188866 [Multi-domain]  Cd Length: 54  Bit Score: 33.83  E-value: 8.27e-03
                          10        20        30
                  ....*....|....*....|....*....|...
gi 1789691051   9 WHKGCFHCEVCKMALNMNNYKGYEKKPYCNAHY 41
Cdd:cd09482    21 WHKTCFRCAICGKSLESTTVTDKDGELYCKVCY 53
LIM2_Enigma cd09456
The second LIM domain of Enigma; The second LIM domain of Enigma: Enigma was initially ...
9-41 8.65e-03

The second LIM domain of Enigma; The second LIM domain of Enigma: Enigma was initially characterized in humans as a protein containing three LIM domains at the C-terminus and a PDZ domain at N-terminus. The third LIM domain specifically interacts with the insulin receptor and the second LIM domain interacts with the receptor tyrosine kinase Ret and the adaptor protein APS. Thus Enigma is implicated in signal transduction processes, such as mitogenic activity, insulin related actin organization, and glucose metabolism. Enigma is expressed in multiple tissues, such as skeletal muscle, heart, bone and brain. LIM domains are 50-60 amino acids in size and share two characteristic zinc finger motifs. The two zinc fingers contain eight conserved residues, mostly cysteines and histidines, which coordinately bond to two zinc atoms. LIM domains function as adaptors or scaffolds to support the assembly of multimeric protein complexes.


Pssm-ID: 188840 [Multi-domain]  Cd Length: 52  Bit Score: 33.82  E-value: 8.65e-03
                          10        20        30
                  ....*....|....*....|....*....|...
gi 1789691051   9 WHKGCFHCEVCKMALNMNNYKGYEKKPYCNAHY 41
Cdd:cd09456    20 WHVHCFTCAACKTPIRNRAFYMEEGAPYCERDY 52
 
Blast search parameters
Data Source: Precalculated data, version = cdd.v.3.21
Preset Options:Database: CDSEARCH/cdd   Low complexity filter: no  Composition Based Adjustment: yes   E-value threshold: 0.01

References:

  • Wang J et al. (2023), "The conserved domain database in 2023", Nucleic Acids Res.51(D)384-8.
  • Lu S et al. (2020), "The conserved domain database in 2020", Nucleic Acids Res.48(D)265-8.
  • Marchler-Bauer A et al. (2017), "CDD/SPARCLE: functional classification of proteins via subfamily domain architectures.", Nucleic Acids Res.45(D)200-3.
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