first calponin homology (CH) domain found in the alpha-actinin family; The alpha-actinin (ACTN) family includes alpha-actinin-1, -2, -3, and -4. They are F-actin cross-linking proteins which are thought to anchor actin to a variety of intracellular structures. ACTN1 mutations cause congenital macrothrombocytopenia. ACTN2 mutations are associated with cardiomyopathies, as well as skeletal muscle disorder. ACTN3 is critical in anchoring the myofibrillar actin filaments and plays a key role in muscle contraction. ACTN4 is associated with cell motility and cancer invasion. It is probably involved in vesicular trafficking via its association with the CART complex, which is necessary for efficient transferrin receptor recycling but not for epidermal growth factor receptor (EGFR) degradation. Members of this family contain two copies of the CH domain. This model corresponds to the first CH domain. CH domains are actin filament (F-actin) binding motifs.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 767981764  65 TFTAWCNSHLRKAGTQIENIEEDFRDGLKLMLLLEVISGERLAKPERGKMRVHKISNVNKALDFIASKGVKLVSIGAEEI 144
Cdd:cd21214    9 TFTAWCNSHLRKAGTQIENIEEDFRDGLKLMLLLEVISGERLPKPERGKMRFHKIANVNKALDFIASKGVKLVSIGAEEI 88

                         90
                 ....*....|....*..
gi 767981764 145 VDGNVKMTLGMIWTIIL 161
Cdd:cd21214   89 VDGNLKMTLGMIWTIIL 105

Spectrin repeats, found in several proteins involved in cytoskeletal structure; family members include spectrin, alpha-actinin and dystrophin; the spectrin repeat forms a three helix bundle with the second helix interrupted by proline in some sequences; the repeats are independent folding units; tandem repeats are found in differing numbers and arrange in an antiparallel manner to form dimers; the repeats are defined by a characteristic tryptophan (W) residue in helix A and a leucine (L) at the carboxyl end of helix C and separated by a linker of 5 residues; two copies of the repeat are present here

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 767981764 424 LAEKFRQKASIHEAWTDamwpslnpGKEAMLRQKDYEtATLSEIKALLKKHEAFESDLAAHQDRVEQIAAIAQELNELDY 503
Cdd:cd00176    1 KLQQFLRDADELEAWLS--------EKEELLSSTDYG-DDLESVEALLKKHEALEAELAAHEERVEALNELGEQLIEEGH 71

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 767981764 504 YDSPSVNARCQKICDQWDNLGALTQKRREALERTEKLLETIDQLYLeyakraapFNNWMEGAMEDLQDTFIVHTIEEIQG 583
Cdd:cd00176   72 PDAEEIQERLEELNQRWEELRELAEERRQRLEEALDLQQFFRDADD--------LEQWLEEKEAALASEDLGKDLESVEE 143

                        170       180       190       200       210       220       230
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 767981764 584 LTTAHEQFKATLPDADKERLAILGIHNEVSKIVQTYHvnmagtNPYTTITPQEINGKWDHVRQLVPRRDQALTEEH 659
Cdd:cd00176  144 LLKKHKELEEELEAHEPRLKSLNELAEELLEEGHPDA------DEEIEEKLEELNERWEELLELAEERQKKLEEAL 213

Spectrin repeat; Spectrin repeat-domains are found in several proteins involved in cytoskeletal structure. These include spectrin, alpha-actinin and dystrophin. The sequence repeat used in this family is taken from the structural repeat in reference. The spectrin domain- repeat forms a three helix bundle. The second helix is interrupted by proline in some sequences. The repeats are defined by a characteriztic tryptophan (W) residue at position 17 in helix A and a leucine (L) at 2 residues from the carboxyl end of helix C. Although the domain occurs in multiple repeats along sequences, the domains are actually stable on their own - ie they act, biophysically, like domains rather than repeats that along function when aggregated.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 767981764  303 QLMEDYEKLASDLLEWIRRTIPWLENRVPENTMHAMQQKLedfRDYRRLHKPPKVQEKCQLEInfNTLQTKLrLSNRPAF 382
Cdd:pfam00435   1 LLLQQFFRDADDLESWIEEKEALLSSEDYGKDLESVQALL---KKHKALEAELAAHQDRVEAL--NELAEKL-IDEGHYA 74

                          90       100       110
                  ....*....|....*....|....*....|.
gi 767981764  383 MPSEGRMVSDINNAWGCLEQVEKGYEEWLLN 413
Cdd:pfam00435  75 SEEIQERLEELNERWEQLLELAAERKQKLEE 105

first calponin homology (CH) domain found in the alpha-actinin family; The alpha-actinin (ACTN) family includes alpha-actinin-1, -2, -3, and -4. They are F-actin cross-linking proteins which are thought to anchor actin to a variety of intracellular structures. ACTN1 mutations cause congenital macrothrombocytopenia. ACTN2 mutations are associated with cardiomyopathies, as well as skeletal muscle disorder. ACTN3 is critical in anchoring the myofibrillar actin filaments and plays a key role in muscle contraction. ACTN4 is associated with cell motility and cancer invasion. It is probably involved in vesicular trafficking via its association with the CART complex, which is necessary for efficient transferrin receptor recycling but not for epidermal growth factor receptor (EGFR) degradation. Members of this family contain two copies of the CH domain. This model corresponds to the first CH domain. CH domains are actin filament (F-actin) binding motifs.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 767981764  65 TFTAWCNSHLRKAGTQIENIEEDFRDGLKLMLLLEVISGERLAKPERGKMRVHKISNVNKALDFIASKGVKLVSIGAEEI 144
Cdd:cd21214    9 TFTAWCNSHLRKAGTQIENIEEDFRDGLKLMLLLEVISGERLPKPERGKMRFHKIANVNKALDFIASKGVKLVSIGAEEI 88

                         90
                 ....*....|....*..
gi 767981764 145 VDGNVKMTLGMIWTIIL 161
Cdd:cd21214   89 VDGNLKMTLGMIWTIIL 105

Ca2+ insensitive EF hand; EF hands are helix-loop-helix binding motifs involved in the regulation of many cellular processes. EF hands usually bind to Ca2+ ions which causes a major conformational change that allows the protein to interact with its designated targets. This domain corresponds to an EF hand which has partially or entirely lost its calcium-binding properties. The calcium insensitive EF hand is still able to mediate protein-protein recognition.

                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....
gi 767981764  854 DTDTADQVMASFKILAGDKNYITMDELRRELPPDQAEYCIARMAPYTGP--DSVPGALDYMSFSTALYG 920
Cdd:pfam08726   1 DTDTAEQVEASFRALAGGKPYVTEEDLRRELTPDQAEYCIARMPPYSGPdgDSVPGAYDYVSFSEALFG 69

Spectrin repeats, found in several proteins involved in cytoskeletal structure; family members include spectrin, alpha-actinin and dystrophin; the spectrin repeat forms a three helix bundle with the second helix interrupted by proline in some sequences; the repeats are independent folding units; tandem repeats are found in differing numbers and arrange in an antiparallel manner to form dimers; the repeats are defined by a characteristic tryptophan (W) residue in helix A and a leucine (L) at the carboxyl end of helix C and separated by a linker of 5 residues; two copies of the repeat are present here

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 767981764 424 LAEKFRQKASIHEAWTDamwpslnpGKEAMLRQKDYEtATLSEIKALLKKHEAFESDLAAHQDRVEQIAAIAQELNELDY 503
Cdd:cd00176    1 KLQQFLRDADELEAWLS--------EKEELLSSTDYG-DDLESVEALLKKHEALEAELAAHEERVEALNELGEQLIEEGH 71

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 767981764 504 YDSPSVNARCQKICDQWDNLGALTQKRREALERTEKLLETIDQLYLeyakraapFNNWMEGAMEDLQDTFIVHTIEEIQG 583
Cdd:cd00176   72 PDAEEIQERLEELNQRWEELRELAEERRQRLEEALDLQQFFRDADD--------LEQWLEEKEAALASEDLGKDLESVEE 143

                        170       180       190       200       210       220       230
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 767981764 584 LTTAHEQFKATLPDADKERLAILGIHNEVSKIVQTYHvnmagtNPYTTITPQEINGKWDHVRQLVPRRDQALTEEH 659
Cdd:cd00176  144 LLKKHKELEEELEAHEPRLKSLNELAEELLEEGHPDA------DEEIEEKLEELNERWEELLELAEERQKKLEEAL 213

Spectrin repeat; Spectrin repeat-domains are found in several proteins involved in cytoskeletal structure. These include spectrin, alpha-actinin and dystrophin. The sequence repeat used in this family is taken from the structural repeat in reference. The spectrin domain- repeat forms a three helix bundle. The second helix is interrupted by proline in some sequences. The repeats are defined by a characteriztic tryptophan (W) residue at position 17 in helix A and a leucine (L) at 2 residues from the carboxyl end of helix C. Although the domain occurs in multiple repeats along sequences, the domains are actually stable on their own - ie they act, biophysically, like domains rather than repeats that along function when aggregated.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 767981764  423 HLAEKFRQKASIHEAWTDamwpslnpGKEAMLRQKDYETaTLSEIKALLKKHEAFESDLAAHQDRVEQIAAIAQELNELD 502
Cdd:pfam00435   1 LLLQQFFRDADDLESWIE--------EKEALLSSEDYGK-DLESVQALLKKHKALEAELAAHQDRVEALNELAEKLIDEG 71

                          90       100       110
                  ....*....|....*....|....*....|....
gi 767981764  503 YYDSPSVNARCQKICDQWDNLGALTQKRREALER 536
Cdd:pfam00435  72 HYASEEIQERLEELNERWEQLLELAAERKQKLEE 105

Calponin homology domain; Actin binding domains present in duplicate at the N-termini of spectrin-like proteins (including dystrophin, alpha-actinin). These domains cross-link actin filaments into bundles and networks. A calponin homology domain is predicted in yeasst Cdc24p.

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 767981764    64 ETFTAWCNSHLRKAGTQ-IENIEEDFRDGLKLMLLLEVISGERL--AKPERGKMRVHKISNVNKALDFIASKGVKLVSIG 140
Cdd:smart00033   1 KTLLRWVNSLLAEYDKPpVTNFSSDLKDGVALCALLNSLSPGLVdkKKVAASLSRFKKIENINLALSFAEKLGGKVVLFE 80

                           90       100
                   ....*....|....*....|..
gi 767981764   141 AEEIVDGNvKMTLGMIWTIILR 162
Cdd:smart00033  81 PEDLVEGP-KLILGVIWTLISL 101

calmodulin; Provisional

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 767981764 777 AKGISQEQMNEFRASFNHFDRKKTGMMDTDDFRACLISMGYNMGEAEFARIMSIVDPNRLGVVTFQAFIDFMSRETADTD 856
Cdd:PTZ00184   2 ADQLTEEQIAEFKEAFSLFDKDGDGTITTKELGTVMRSLGQNPTEAELQDMINEVDADGNGTIDFPEFLTLMARKMKDTD 81

                         90       100
                 ....*....|....*....|....*.
gi 767981764 857 TADQVMASFKILAGDKN-YITMDELR 881
Cdd:PTZ00184  82 SEEEIKEAFKVFDRDGNgFISAAELR 107

Spectrin repeat; Spectrin repeat-domains are found in several proteins involved in cytoskeletal structure. These include spectrin, alpha-actinin and dystrophin. The sequence repeat used in this family is taken from the structural repeat in reference. The spectrin domain- repeat forms a three helix bundle. The second helix is interrupted by proline in some sequences. The repeats are defined by a characteriztic tryptophan (W) residue at position 17 in helix A and a leucine (L) at 2 residues from the carboxyl end of helix C. Although the domain occurs in multiple repeats along sequences, the domains are actually stable on their own - ie they act, biophysically, like domains rather than repeats that along function when aggregated.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 767981764  303 QLMEDYEKLASDLLEWIRRTIPWLENRVPENTMHAMQQKLedfRDYRRLHKPPKVQEKCQLEInfNTLQTKLrLSNRPAF 382
Cdd:pfam00435   1 LLLQQFFRDADDLESWIEEKEALLSSEDYGKDLESVQALL---KKHKALEAELAAHQDRVEAL--NELAEKL-IDEGHYA 74

                          90       100       110
                  ....*....|....*....|....*....|.
gi 767981764  383 MPSEGRMVSDINNAWGCLEQVEKGYEEWLLN 413
Cdd:pfam00435  75 SEEIQERLEELNERWEQLLELAAERKQKLEE 105

Ca2+-binding protein, EF-hand superfamily [Signal transduction mechanisms];

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 767981764 783 EQMNEFRASFNHFDRKKTGMMDTDDFRAclismgynMGEAEFARIMSIVDPNRLGVVTFQAFIDFMSRETADTDTADqVM 862
Cdd:COG5126    2 LQRRKLDRRFDLLDADGDGVLERDDFEA--------LFRRLWATLFSEADTDGDGRISREEFVAGMESLFEATVEPF-AR 72

                         90       100       110       120
                 ....*....|....*....|....*....|....*....|..
gi 767981764 863 ASFKILagDKN---YITMDELRR-----ELPPDQAEYCIARM 896
Cdd:COG5126   73 AAFDLL--DTDgdgKISADEFRRlltalGVSEEEADELFARL 112

DNA repair ATPase RecN [Replication, recombination and repair];

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 767981764 464 LSEIKALLKKHEAFESDLAAHQDRveqiaaIAQELNELDYYDS--PSVNARCQKICDQWDNLG-ALTQKRREALERTEKL 540
Cdd:COG0497  305 LALLRRLARKYGVTVEELLAYAEE------LRAELAELENSDErlEELEAELAEAEAELLEAAeKLSAARKKAAKKLEKA 378

                         90
                 ....*....|....
gi 767981764 541 LET-IDQLYLEYAK 553
Cdd:COG0497  379 VTAeLADLGMPNAR 392

second calponin homology (CH) domain found in alpha-actinin-1; Alpha-actinin-1 (ACTN1), also called alpha-actinin cytoskeletal isoform, or non-muscle alpha-actinin-1, is an F-actin cross-linking protein which is thought to anchor actin to a variety of intracellular structures. ACTN1 is a bundling protein. Its mutations cause congenital macrothrombocytopenia. It contains two copies of the CH domain. This model corresponds to the second CH domain. CH domains are actin filament (F-actin) binding motifs.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 767981764 165 IQDISVEETSAKEGLLLWCQRKTAPYKNVNIQNFHISWKDGLGFCALIHRHRPELIDYGKLRKDDPLTNLNTAFDVAEKY 244
Cdd:cd21287    1 IQDISVEETSAKEGLLLWCQRKTAPYKNVNIQNFHISWKDGLGFCALIHRHRPELIDYGKLRKDDPLTNLNTAFDVAEKY 80

                         90       100       110
                 ....*....|....*....|....*....|....*....
gi 767981764 245 LDIPKMLDAEDIVGTARPDEKAIMTYVSSFYHAFSGAQK 283
Cdd:cd21287   81 LDIPKMLDAEDIVGTARPDEKAIMTYVSSFYHAFSGAQK 119

second calponin homology (CH) domain found in alpha-actinin-3; Alpha-actinin-3 (ACTN3), also called alpha-actinin skeletal muscle isoform 3, is an F-actin cross-linking protein which is thought to anchor actin to a variety of intracellular structures. ACTN3 is a bundling protein. It is critical in anchoring the myofibrillar actin filaments and plays a key role in muscle contraction. It contains two copies of the CH domain. This model corresponds to the second CH domain. CH domains are actin filament (F-actin) binding motifs.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 767981764 165 IQDISVEETSAKEGLLLWCQRKTAPYKNVNIQNFHISWKDGLGFCALIHRHRPELIDYGKLRKDDPLTNLNTAFDVAEKY 244
Cdd:cd21289    1 IQDISVEETSAKEGLLLWCQRKTAPYRNVNVQNFHTSWKDGLALCALIHRHRPDLIDYAKLRKDDPIGNLNTAFEVAEKY 80

                         90       100       110       120
                 ....*....|....*....|....*....|....*....|....
gi 767981764 245 LDIPKMLDAEDIVGTARPDEKAIMTYVSSFYHAFSGAQKAETAA 288
Cdd:cd21289   81 LDIPKMLDAEDIVNTPKPDEKAIMTYVSCFYHAFAGAEQAETAA 124

first calponin homology (CH) domain found in the alpha-actinin family; The alpha-actinin (ACTN) family includes alpha-actinin-1, -2, -3, and -4. They are F-actin cross-linking proteins which are thought to anchor actin to a variety of intracellular structures. ACTN1 mutations cause congenital macrothrombocytopenia. ACTN2 mutations are associated with cardiomyopathies, as well as skeletal muscle disorder. ACTN3 is critical in anchoring the myofibrillar actin filaments and plays a key role in muscle contraction. ACTN4 is associated with cell motility and cancer invasion. It is probably involved in vesicular trafficking via its association with the CART complex, which is necessary for efficient transferrin receptor recycling but not for epidermal growth factor receptor (EGFR) degradation. Members of this family contain two copies of the CH domain. This model corresponds to the first CH domain. CH domains are actin filament (F-actin) binding motifs.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 767981764  65 TFTAWCNSHLRKAGTQIENIEEDFRDGLKLMLLLEVISGERLAKPERGKMRVHKISNVNKALDFIASKGVKLVSIGAEEI 144
Cdd:cd21214    9 TFTAWCNSHLRKAGTQIENIEEDFRDGLKLMLLLEVISGERLPKPERGKMRFHKIANVNKALDFIASKGVKLVSIGAEEI 88

                         90
                 ....*....|....*..
gi 767981764 145 VDGNVKMTLGMIWTIIL 161
Cdd:cd21214   89 VDGNLKMTLGMIWTIIL 105

second calponin homology (CH) domain found in the beta spectrin family; The beta spectrin family includes beta-I, -II, -III, -IV and -V spectrins. Spectrin is an actin crosslinking and molecular scaffold protein that links the plasma membrane to the actin cytoskeleton, and functions in the determination of cell shape, arrangement of transmembrane proteins, and organization of organelles. It is composed of two antiparallel dimers of alpha- and beta- subunits. Beta-I spectrin, also called spectrin beta chain, erythrocytic (SPTB), may be involved in anaemia pathogenesis. Beta-II spectrin, also called spectrin beta chain, non-erythrocytic 1 (SPTBN1), or fodrin beta chain, is a component of fodrin, which is the general spectrin-like protein that seems to be involved in secretion. Fodrin interacts with calmodulin in a calcium-dependent manner and is thus a candidate for the calcium-dependent movement of the cytoskeleton at the membrane. Beta-IV spectrin is also called spectrin, non-erythroid beta chain 3 (SPTBN3) or spectrin beta chain, non-erythrocytic 4 (SPTBN4). Its mutation associates with congenital myopathy, neuropathy, and central deafness. Beta-III spectrin is also called spectrin beta chain, non-erythrocytic 2 (SPTBN2), or spinocerebellar ataxia 5 protein (SCA5). Beta-V spectrin, also called spectrin beta chain, non-erythrocytic 5 (SPTBN5), is a mammalian ortholog of Drosophila beta H spectrin. Beta-III and Beta-V spectrins may play crucial roles as longer actin-membrane cross-linkers or fulfill the need for greater extensible flexibility than can be provided by the other smaller conventional spectrins. Members of this family contain two copies of the CH domain. This model corresponds to the second CH domain. CH domains are actin filament (F-actin) binding motifs.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 767981764 174 SAKEGLLLWCQRKTAPYKNVNIQNFHISWKDGLGFCALIHRHRPELIDYGKLRKDDPLTNLNTAFDVAEKYLDIPKMLDA 253
Cdd:cd21194    2 SAKDALLLWCQRKTAGYPGVNIQNFTTSWRDGLAFNALIHAHRPDLIDYNRLDPNDHLGNLNNAFDVAEQELGIAKLLDA 81

                         90       100
                 ....*....|....*....|....*
gi 767981764 254 EDiVGTARPDEKAIMTYVSSFYHAF 278
Cdd:cd21194   82 ED-VDVARPDEKSIMTYVASYYHYF 105

second calponin homology (CH) domain found in the beta-I spectrin-like subfamily; The beta-I spectrin-like family includes beta-I, -II, -III and -IV spectrins. Spectrin is an actin crosslinking and molecular scaffold protein that links the plasma membrane to the actin cytoskeleton, and functions in the determination of cell shape, arrangement of transmembrane proteins, and organization of organelles. It is composed of two antiparallel dimers of alpha- and beta- subunits. Beta-I spectrin, also called spectrin beta chain, erythrocytic (SPTB), may be involved in anaemia pathogenesis. Beta-II spectrin, also called spectrin beta chain, non-erythrocytic 1 (SPTBN1), or fodrin beta chain, is a component of fodrin, which is the general spectrin-like protein that seems to be involved in secretion. Fodrin interacts with calmodulin in a calcium-dependent manner and is thus a candidate for the calcium-dependent movement of the cytoskeleton at the membrane. Beta-III spectrin, also called spectrin beta chain, non-erythrocytic 2 (SPTBN2), or spinocerebellar ataxia 5 protein (SCA5), may play a crucial role as a longer actin-membrane cross-linker or fulfill the need for greater extensible flexibility than can be provided by the other smaller conventional spectrins. Beta-IV spectrin is also called spectrin, non-erythroid beta chain 3 (SPTBN3) or spectrin beta chain, non-erythrocytic 4 (SPTBN4). Its mutation associates with congenital myopathy, neuropathy, and central deafness. Members of this subfamily contain two copies of the CH domain. This model corresponds to the second CH domain. CH domains are actin filament (F-actin) binding motifs.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 767981764 174 SAKEGLLLWCQRKTAPYKNVNIQNFHISWKDGLGFCALIHRHRPELIDYGKLRKDDPLTNLNTAFDVAEKYLDIPKMLDA 253
Cdd:cd21248    2 SAKDALLLWCQMKTAGYPNVNVRNFTTSWRDGLAFNALIHKHRPDLIDYDKLSKSNALYNLQNAFNVAEQKLGLTKLLDP 81

                         90       100
                 ....*....|....*....|....*
gi 767981764 254 EDiVGTARPDEKAIMTYVSSFYHAF 278
Cdd:cd21248   82 ED-VNVEQPDEKSIITYVVTYYHYF 105

second calponin homology (CH) domain found in spectrin beta chain, erythrocytic (SPTB) and similar proteins; Spectrin is an actin crosslinking and molecular scaffold protein that links the plasma membrane to the actin cytoskeleton, and functions in the determination of cell shape, arrangement of transmembrane proteins, and organization of organelles. It is composed of two antiparallel dimers of alpha- and beta- subunits. SPTB, also called beta-I spectrin, may be involved in anaemia pathogenesis. SPTB contains two copies of the CH domain. This model corresponds to the second CH domain. CH domains are actin filament (F-actin) binding motifs.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 767981764 171 EETSAKEGLLLWCQRKTAPYKNVNIQNFHISWKDGLGFCALIHRHRPELIDYGKLRKDDPLTNLNTAFDVAEKYLDIPKM 250
Cdd:cd21319    2 ETRSAKDALLLWCQMKTAGYPNVNVTNFTSSWKDGLAFNALIHKHRPDLVDFGKLKKSNARHNLEHAFNVAERQLGITKL 81

                         90       100
                 ....*....|....*....|....*....
gi 767981764 251 LDAEDIVgTARPDEKAIMTYVSSFYHAFS 279
Cdd:cd21319   82 LDPEDVF-TENPDEKSIITYVVAFYHYFS 109

second calponin homology (CH) domain found in the plectin/dystonin/MACF1 family; This family includes plectin, dystonin and microtubule-actin cross-linking factor 1, isoforms 1/2/3/5 (MACF1). Plectin, also called PCN, PLTN, hemidesmosomal protein 1 (HD1), or plectin-1, is a structural component of muscle. It interlinks intermediate filaments with microtubules and microfilaments, and anchors intermediate filaments to desmosomes or hemidesmosomes. It could also bind muscle proteins such as actin to membrane complexes in muscle. Dystonin, also called 230 kDa bullous pemphigoid antigen, 230/240 kDa bullous pemphigoid antigen, bullous pemphigoid antigen 1 (BPA or BPAG1), dystonia musculorum protein, or hemidesmosomal plaque protein, is a cytoskeletal linker protein that acts as an integrator of intermediate filaments, actin, and microtubule cytoskeleton networks. It is required for anchoring either intermediate filaments to the actin cytoskeleton in neural and muscle cells, or keratin-containing intermediate filaments to hemidesmosomes in epithelial cells. MACF1, also called 620 kDa actin-binding protein (ABP620), actin cross-linking family protein 7 (ACF7), macrophin-1, or trabeculin-alpha, is a large protein containing numerous spectrin and leucine-rich repeat (LRR) domains. It facilitates actin-microtubule interactions at the cell periphery and couples the microtubule network to cellular junctions. Members of this family contain two copies of the CH domain. This model corresponds to the second CH domain. CH domains are actin filament (F-actin) binding motifs.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 767981764 174 SAKEGLLLWCQRKTAPYKNVNIQNFHISWKDGLGFCALIHRHRPELIDYGKLRKDDPLTNLNTAFDVAEKYLDIPKMLDA 253
Cdd:cd21189    1 SAKEALLLWARRTTEGYPGVRVTNFTSSWRDGLAFNAIIHRNRPDLIDFRSVRNQSNRENLENAFNVAEKEFGVTRLLDP 80

                         90       100
                 ....*....|....*....|....*
gi 767981764 254 EDiVGTARPDEKAIMTYVSSFYHAF 278
Cdd:cd21189   81 ED-VDVPEPDEKSIITYVSSLYDVF 104

calponin homology (CH) domain found in MICAL-like protein 2 and similar proteins; MICAL-like protein 2 (MICAL-L2), also called junctional Rab13-binding protein (JRAB), or molecule interacting with CasL-like 2, acts as an effector of small Rab GTPases which is involved in junctional complexes assembly through the regulation of cell adhesion molecule transport to the plasma membrane, and actin cytoskeleton reorganization. It regulates the endocytic recycling of occludins, claudins, and E-cadherin to the plasma membrane and may thereby regulate the establishment of tight junctions and adherens junctions. Members of this subfamily contain a single copy of CH domain. CH domains are actin filament (F-actin) binding motifs.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 767981764 174 SAKEGLLLWCQRKTAPYKNVNIQNFHISWKDGLGFCALIHRHRPELIDYGKLRKDDPLTNLNTAFDVAEKYLDIPKMLDA 253
Cdd:cd21253    1 AGIKALQQWCRQQTEGYRDVKVTNMTTSWRDGLAFCAIIHRFRPDLIDFDSLSKENVYENNKLAFTVAEKELGIPALLDA 80

                         90       100
                 ....*....|....*....|....*
gi 767981764 254 EDIVGTARPDEKAIMTYVSSFYHAF 278
Cdd:cd21253   81 EDMVALKVPDKLSILTYVSQYYNYF 105

second calponin homology (CH) domain found in spectrin beta chain, non-erythrocytic 2 (SPTBN2) and similar proteins; Spectrin is an actin crosslinking and molecular scaffold protein that links the plasma membrane to the actin cytoskeleton, and functions in the determination of cell shape, arrangement of transmembrane proteins, and organization of organelles. It is composed of two antiparallel dimers of alpha- and beta- subunits. SPTBN2, also called beta-III spectrin, or spinocerebellar ataxia 5 protein (SCA5), probably plays an important role in the neuronal membrane skeleton. Mutations in SPTBN2 is associated with spinocerebellar ataxia type 5. SPTBN2 contains two copies of the CH domain. This model corresponds to the second CH domain. CH domains are actin filament (F-actin) binding motifs.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 767981764 171 EETSAKEGLLLWCQRKTAPYKNVNIQNFHISWKDGLGFCALIHRHRPELIDYGKLRKDDPLTNLNTAFDVAEKYLDIPKM 250
Cdd:cd21321    2 EKKSAKDALLLWCQMKTAGYPNVNVHNFTTSWRDGLAFNAIVHKHRPDLIDFETLKKSNAHYNLQNAFNVAEKELGLTKL 81

                         90       100
                 ....*....|....*....|....*....
gi 767981764 251 LDAEDiVGTARPDEKAIMTYVSSFYHAFS 279
Cdd:cd21321   82 LDPED-VNVDQPDEKSIITYVATYYHYFS 109

first calponin homology (CH) domain found in Schizosaccharomyces pombe alpha-actinin-like protein 1 and similar proteins; Schizosaccharomyces pombe alpha-actinin-like protein 1 (SpAIN1) binds to actin and is involved in actin-ring formation and organization. It plays a role in cytokinesis and is involved in septation. Members of this family contain two copies of the CH domain. This model corresponds to the first CH domain. CH domains are actin filament (F-actin) binding motifs.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 767981764  65 TFTAWCNSHLRKAGTQIENIEEDFRDGLKLMLLLEVISGERLAK-PERGKMRVHKISNVNKALDFIASKGVKLVSIGAEE 143
Cdd:cd21215    8 TFTKWLNTKLSSRGLSITDLVTDLSDGVRLIQLLEIIGDESLGRyNKNPKMRVQKLENVNKALEFIKSRGVKLTNIGAED 87

                         90       100
                 ....*....|....*....|
gi 767981764 144 IVDGNVKMTLGMIWTIILRF 163
Cdd:cd21215   88 IVDGNLKLILGLLWTLILRF 107

calponin homology (CH) domain found in the MICAL and EHBP families; This group is composed of the molecule interacting with CasL protein (MICAL) and EH domain-binding protein (EHBP) families. MICAL is a large, multidomain, cytosolic protein with a single LIM domain, a calponin homology (CH) domain and a flavoprotein monooxygenase (MO) domain. In Drosophila, MICAL is expressed in axons, interacts with the neuronal A (PlexA) receptor and is required for Semaphorin 1a (Sema-1a)-PlexA-mediated repulsive axon guidance. The LIM and CH domains mediate interactions with the cytoskeleton, cytoskeletal adaptor proteins, and other signaling proteins. The flavoprotein MO is required for semaphorin-plexin repulsive axon guidance during axonal pathfinding in the Drosophila neuromuscular system. The EHBP family includes EHBP1 and EHBP1-like protein (EHBP1L1). EHBP1 is a regulator of endocytic recycling and may play a role in actin reorganization by linking clathrin-mediated endocytosis to the actin cytoskeleton. It may act as an effector of small GTPases, including RAB-10 (Rab10), and play a role in vesicle trafficking. EHBP proteins contain a single CH domain. CH domains are actin filament (F-actin) binding motifs.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 767981764 177 EGLLLWCQRKTAPYKNVNIQNFHISWKDGLGFCALIHRHRPELIDYGKLRKDDPLTNLNTAFDVAEKYLDIPKMLDAEDI 256
Cdd:cd22198    3 EELLSWCQEQTEGYRGVKVTDLTSSWRSGLALCAIIHRFRPDLIDFSSLDPENIAENNQLAFDVAEQELGIPPVMTGQEM 82

                         90       100
                 ....*....|....*....|...
gi 767981764 257 VGTARPDEKAIMTYVSSFYHAFS 279
Cdd:cd22198   83 ASLAVPDKLSMVSYLSQFYEAFK 105

calponin homology (CH) domain found in the MICAL-like protein family; The MICAL-L family includes MICAL-L1 and MICAL-L2. MICAL-L1, also called molecule interacting with Rab13 (MIRab13), is a probable lipid-binding protein with higher affinity for phosphatidic acid, a lipid enriched in recycling endosome membranes. It is a tubular endosomal membrane hub that connects Rab35 and Arf6 with Rab8a. It may be involved in a late step of receptor-mediated endocytosis regulating endocytosed-EGF receptor trafficking. Alternatively, it may regulate slow endocytic recycling of endocytosed proteins back to the plasma membrane. MICAL-L1 may indirectly play a role in neurite outgrowth. MICAL-L2, also called junctional Rab13-binding protein (JRAB), or molecule interacting with CasL-like 2, acts as an effector of small Rab GTPases which is involved in junctional complexes assembly through the regulation of cell adhesion molecule transport to the plasma membrane, and actin cytoskeleton reorganization. It regulates the endocytic recycling of occludins, claudins, and E-cadherin to the plasma membrane and may thereby regulate the establishment of tight junctions and adherens junctions. Members of this family contain a single copy of CH domain. CH domains are actin filament (F-actin) binding motifs.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 767981764 175 AKEGLLLWCQRKTAPYKNVNIQNFHISWKDGLGFCALIHRHRPELIDYGKLRKDDPLTNLNTAFDVAEKYLDIPKMLDAE 254
Cdd:cd21197    1 KIQALLRWCRRQCEGYPGVNITNLTSSFRDGLAFCAILHRHRPELIDFHSLKKDNWLENNRLAFRVAETSLGIPALLDAE 80

                         90       100
                 ....*....|....*....|....
gi 767981764 255 DIVGTARPDEKAIMTYVSSFYHAF 278
Cdd:cd21197   81 DMVTMHVPDRLSIITYVSQYYNHF 104

first calponin homology (CH) domain found in spectrin beta chain, non-erythrocytic 4 (SPTBN4) and similar proteins; Spectrin is an actin crosslinking and molecular scaffold protein that links the plasma membrane to the actin cytoskeleton, and functions in the determination of cell shape, arrangement of transmembrane proteins, and organization of organelles. It is composed of two antiparallel dimers of alpha- and beta- subunits. SPTBN4, also called beta-IV spectrin, or spectrin, non-erythroid beta chain 3 (SPTBN3), is a novel spectrin isolated as an interactor of the receptor tyrosine phosphatase-like protein ICA512. Its mutation associates with congenital myopathy, neuropathy, and central deafness. SPTBN4 contains two copies of the CH domain. This model corresponds to the first CH domain. CH domains are actin filament (F-actin) binding motifs.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 767981764  64 ETFTAWCNSHLRKAGTQIENIEEDFRDGLKLMLLLEVISGERLAKPERGKMRVHKISNVNKALDFIASKGVKLVSIGAEE 143
Cdd:cd21318   41 KTFTKWVNSHLARVPCRINDLYTDLRDGYVLTRLLEVLSGEQLPKPTRGRMRIHSLENVDKALQFLKEQRVHLENVGSHD 120

                         90
                 ....*....|....*....
gi 767981764 144 IVDGNVKMTLGMIWTIILR 162
Cdd:cd21318  121 IVDGNHRLTLGLIWTIILR 139

second calponin homology (CH) domain found in the dystrophin family; The dystrophin family includes dystrophin and its paralog, utrophin. Dystrophin, encoded by the DMD gene, is a large, submembrane cytoskeletal protein that is the main component of the dystrophin-glycoprotein complex (DGC) in skeletal muscles. It links the transmembrane DGC to the actin cytoskeleton through binding strongly to the cytoplasmic tail of beta-dystroglycan, the transmembrane subunit of a highly O-glycosylated cell-surface protein. Dystrophin is also involved in maintaining the structural integrity of cells, as well as in the formation of the blood-brain barrier (BBB). Utrophin, also called dystrophin-related protein 1 (DRP-1), is an autosomal dystrophin homolog that increases dystrophic muscle function and reduces pathology. It is broadly expressed in both the mRNA and protein levels, and occurs in the cerebrovascular endothelium. Utrophin forms the utrophin-glycoprotein complex (UGC) by interacting with dystroglycans (DGs) and sarcoglycan-dystroglycans, as well as sarcoglycan and sarcospan (SG-SSPN) subcomplexes. It may act as a scaffolding protein that stabilizes lipid microdomains and clusters mechanosensitive channel subunits, and link the F-actin cytoskeleton to the cell membrane via the associated glycoprotein complex. Members of this family contain two copies of the CH domain. This model corresponds to the second CH domain. CH domains are actin filament (F-actin) binding motifs.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 767981764 179 LLLWCQRKTAPYKNVNIQNFHISWKDGLGFCALIHRHRPELIDYGKLRKDDPLTNLNTAFDVAEKYLDIPKMLDAEDiVG 258
Cdd:cd21187    5 LLAWCRQSTRGYEQVDVKNFTTSWRDGLAFNALIHRHRPDLFDFDSLVKDSPESRLEHAFTVAHEHLGIEKLLDPED-VN 83

                         90
                 ....*....|....*..
gi 767981764 259 TARPDEKAIMTYVSSFY 275
Cdd:cd21187   84 VEQPDKKSILMYVTSLF 100

calponin homology (CH) domain found in the cytospin family; The cytospin family includes cytospin-A and cytospin-B. Cytospin-A, also called renal carcinoma antigen NY-REN-22, sperm antigen with calponin homology and coiled-coil domains 1-like, or SPECC1-like (SPECC1L) protein, is involved in cytokinesis and spindle organization. It may play a role in actin cytoskeleton organization and microtubule stabilization and hence, is required for proper cell adhesion and migration. Cytospin-B, also called nuclear structure protein 5 (NSP5), sperm antigen HCMOGT-1, or sperm antigen with calponin homology and coiled-coil domains 1 (SPECC1), is a novel fusion partner to PDGFRB in juvenile myelomonocytic leukemia with translocation t(5;17)(q33;p11.2). Members of this family contain a single copy of the CH domain. CH domains are actin filament (F-actin) binding motifs.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 767981764 174 SAKEGLLLWCQRKTAPYKNVNIQNFHISWKDGLGFCALIHRHRPELIDYGKLRKDDPLTNLNTAFDVAEKYlDIPKMLDA 253
Cdd:cd21199    8 SKRNALLKWCQEKTQGYKGIDITNFSSSWNDGLAFCALLHSYLPDKIPYSELNPQDKRRNFTLAFKAAESV-GIPTTLTI 86

                         90       100
                 ....*....|....*....|....*
gi 767981764 254 EDIVGTARPDEKAIMTYVSSFYHAF 278
Cdd:cd21199   87 DEMVSMERPDWQSVMSYVTAIYKHF 111

calponin homology (CH) domain found in the smoothelin family; The smoothelin family includes smoothelin and smoothelin-like proteins. Smoothelins are actin-binding cytoskeletal proteins that are abundantly expressed in healthy visceral (smoothelin-A) and vascular (smoothelin-B) smooth muscle. SMTNL1, also called calponin homology-associated smooth muscle protein (CHASM), plays a role in the regulation of contractile properties of both striated and smooth muscles. It can bind to calmodulin and tropomyosin. When it is unphosphorylated, SMTNL1 may inhibit myosin dephosphorylation. SMTNL2 is highly expressed in skeletal muscle and could be associated with differentiating myocytes. Members of this family contain a single copy of the CH domain. CH domains are actin filament (F-actin) binding motifs.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 767981764 174 SAKEGLLLWCQRKTAPYKNVNIQNFHISWKDGLGFCALIHRHRPELIDYGKLRKDDPLTNLNTAFDVAEKYLDIPKMLDA 253
Cdd:cd21200    1 SIKQMLLEWCQAKTRGYEHVDITNFSSSWSDGMAFCALIHHFFPDAFDYSSLDPKNRRKNFELAFSTAEELADIAPLLEV 80

                         90       100
                 ....*....|....*....|....*..
gi 767981764 254 EDIVGTA-RPDEKAIMTYVSSFYHAFS 279
Cdd:cd21200   81 EDMVRMGnRPDWKCVFTYVQSLYRHLR 107