interleukin-1 receptor type 2 isoform X2 [Mus musculus]
Protein Classification
List of domain hits
| Name | Accession | Description | Interval | E-value | ||||||
| PHA02785 super family | cl31505 | IL-beta-binding protein; Provisional |
36-364 | 1.41e-43 | ||||||
IL-beta-binding protein; Provisional The actual alignment was detected with superfamily member PHA02785: Pssm-ID: 165149 [Multi-domain] Cd Length: 326 Bit Score: 154.79 E-value: 1.41e-43
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| Name | Accession | Description | Interval | E-value | ||||||
| PHA02785 | PHA02785 | IL-beta-binding protein; Provisional |
36-364 | 1.41e-43 | ||||||
IL-beta-binding protein; Provisional Pssm-ID: 165149 [Multi-domain] Cd Length: 326 Bit Score: 154.79 E-value: 1.41e-43
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| Ig2_IL1R2_like | cd05897 | Second immunoglobulin (Ig)-like domain of interleukin-1 receptor-2 (IL1R2), and similar ... |
148-242 | 2.89e-33 | ||||||
Second immunoglobulin (Ig)-like domain of interleukin-1 receptor-2 (IL1R2), and similar domains; The members here are composed of the second immunoglobulin (Ig)-like domain of interleukin-1 receptor-2 (IL1R2). IL-1 alpha and IL-1 beta are cytokines which participate in the regulation of inflammation, immune responses, and hematopoiesis. These cytokines bind to the IL-1 receptor type 1 (IL1R1), which is activated on additional association with interleukin-1 receptor accessory protein (IL1RAP). IL-1 also binds the IL-1 receptor, type II (IL1R2) represented in this group. Mature IL1R2 consists of three IG-like domains, a transmembrane domain, and a short cytoplasmic domain. It lacks the large cytoplasmic domain of mature IL1R1 and does not initiate signal transduction. A naturally occurring cytokine IL-1RA (IL-1 receptor antagonist) is widely expressed and binds to IL-1 receptors, inhibiting the binding of IL-1 alpha and IL-1 beta. Pssm-ID: 409478 Cd Length: 95 Bit Score: 119.86 E-value: 2.89e-33
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| IG_like | smart00410 | Immunoglobulin like; IG domains that cannot be classified into one of IGv1, IGc1, IGc2, IG. |
50-137 | 3.53e-07 | ||||||
Immunoglobulin like; IG domains that cannot be classified into one of IGv1, IGc1, IGc2, IG. Pssm-ID: 214653 [Multi-domain] Cd Length: 85 Bit Score: 47.50 E-value: 3.53e-07
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| Ig_3 | pfam13927 | Immunoglobulin domain; This family contains immunoglobulin-like domains. |
249-342 | 2.29e-05 | ||||||
Immunoglobulin domain; This family contains immunoglobulin-like domains. Pssm-ID: 464046 [Multi-domain] Cd Length: 78 Bit Score: 42.17 E-value: 2.29e-05
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| Name | Accession | Description | Interval | E-value | ||||||
| PHA02785 | PHA02785 | IL-beta-binding protein; Provisional |
36-364 | 1.41e-43 | ||||||
IL-beta-binding protein; Provisional Pssm-ID: 165149 [Multi-domain] Cd Length: 326 Bit Score: 154.79 E-value: 1.41e-43
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| Ig2_IL1R2_like | cd05897 | Second immunoglobulin (Ig)-like domain of interleukin-1 receptor-2 (IL1R2), and similar ... |
148-242 | 2.89e-33 | ||||||
Second immunoglobulin (Ig)-like domain of interleukin-1 receptor-2 (IL1R2), and similar domains; The members here are composed of the second immunoglobulin (Ig)-like domain of interleukin-1 receptor-2 (IL1R2). IL-1 alpha and IL-1 beta are cytokines which participate in the regulation of inflammation, immune responses, and hematopoiesis. These cytokines bind to the IL-1 receptor type 1 (IL1R1), which is activated on additional association with interleukin-1 receptor accessory protein (IL1RAP). IL-1 also binds the IL-1 receptor, type II (IL1R2) represented in this group. Mature IL1R2 consists of three IG-like domains, a transmembrane domain, and a short cytoplasmic domain. It lacks the large cytoplasmic domain of mature IL1R1 and does not initiate signal transduction. A naturally occurring cytokine IL-1RA (IL-1 receptor antagonist) is widely expressed and binds to IL-1 receptors, inhibiting the binding of IL-1 alpha and IL-1 beta. Pssm-ID: 409478 Cd Length: 95 Bit Score: 119.86 E-value: 2.89e-33
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| Ig1_IL1R_like | cd05756 | First immunoglobulin (Ig)-like domain of interleukin-1 receptor (IL1R), and similar domains; ... |
44-138 | 1.01e-26 | ||||||
First immunoglobulin (Ig)-like domain of interleukin-1 receptor (IL1R), and similar domains; The members here are composed of the first immunoglobulin (Ig)-like domain of interleukin-1 receptor (IL1R; also known as cluster of differentiation (CD) 121). IL-1 alpha and IL-1 beta are cytokines which participate in the regulation of inflammation, immune responses, and hematopoiesis. These cytokines bind to the IL-1 receptor type 1 (IL1R1), which is activated on additional association with interleukin-1 receptor accessory protein (IL1RAP). IL-1 also binds a second receptor designated type II (IL1R2). Mature IL1R1 consists of three Ig-like domains, a transmembrane domain, and a large cytoplasmic domain. Mature IL1R2 is organized similarly except that it has a short cytoplasmic domain. The latter does not initiate signal transduction. A naturally occurring cytokine IL-1RA (IL-1 receptor antagonist) is widely expressed and binds to IL-1 receptors, inhibiting the binding of IL-1 alpha and IL-1 beta. Pssm-ID: 409414 Cd Length: 96 Bit Score: 102.50 E-value: 1.01e-26
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| Ig2_IL1R-like | cd05757 | Second immunoglobulin (Ig)-like domain of interleukin-1 receptor (IL1R), and similar domains; ... |
149-242 | 5.12e-26 | ||||||
Second immunoglobulin (Ig)-like domain of interleukin-1 receptor (IL1R), and similar domains; The members here are composed of the second immunoglobulin (Ig)-like domain of interleukin-1 receptor (IL1R; also known as cluster of differentiation (CD) 121). IL-1 alpha and IL-1 beta are cytokines which participate in the regulation of inflammation, immune responses, and hematopoiesis. These cytokines bind to the IL-1 receptor type 1 (IL1R1), which is activated on additional association with interleukin-1 receptor accessory protein (IL1RAP). IL-1 also binds a second receptor designated type II (IL1R2). Mature IL1R1 consists of three IG-like domains, a transmembrane domain, and a large cytoplasmic domain. Mature IL1R2 is organized similarly except that it has a short cytoplasmic domain. The latter does not initiate signal transduction. A naturally occurring cytokine IL-1RA (IL-1 receptor antagonist) is widely expressed and binds to IL-1 receptors, inhibiting the binding of IL-1 alpha and IL-1 beta. This group also contains ILIR-like 1 (IL1R1L) which maps to the same chromosomal location as IL1R1 and IL1R2. Pssm-ID: 409415 Cd Length: 92 Bit Score: 100.48 E-value: 5.12e-26
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| PHA02826 | PHA02826 | IL-1 receptor-like protein; Provisional |
41-240 | 5.10e-21 | ||||||
IL-1 receptor-like protein; Provisional Pssm-ID: 165173 [Multi-domain] Cd Length: 227 Bit Score: 90.74 E-value: 5.10e-21
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| Ig2_IL1R_like | cd20994 | Second immunoglobulin (Ig)-like domain of interleukin-1 receptor (IL1R), and similar domains; ... |
150-242 | 6.29e-18 | ||||||
Second immunoglobulin (Ig)-like domain of interleukin-1 receptor (IL1R), and similar domains; The members here are composed of the second immunoglobulin (Ig)-like domain of interleukin-1 receptor (IL1R). IL-1 alpha and IL-1 beta are cytokines which participate in the regulation of inflammation, immune responses, and hematopoiesis. These cytokines bind to the IL-1 receptor type 1 (IL1R1), which is activated on additional association with interleukin-1 receptor accessory protein (IL1RAP). IL-1 also binds a second receptor designated type II (IL1R2). Mature IL1R1 consists of three IG-like domains, a transmembrane domain, and a large cytoplasmic domain. Mature IL1R2 is organized similarly except that it has a short cytoplasmic domain. The latter does not initiate signal transduction. A naturally occurring cytokine IL-1RA (IL-1 receptor antagonist) is widely expressed and binds to IL-1 receptors, inhibiting the binding of IL-1 alpha and IL-1 beta. This group also contains ILIR-like 1 (IL1R1L) which maps to the same chromosomal location as IL1R1 and IL1R2. Pssm-ID: 409586 Cd Length: 94 Bit Score: 78.28 E-value: 6.29e-18
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| Ig1_IL1R_like | cd20991 | First immunoglobulin (Ig)-like domain of interleukin-1 receptor (IL1R), and similar domains; ... |
56-137 | 7.05e-08 | ||||||
First immunoglobulin (Ig)-like domain of interleukin-1 receptor (IL1R), and similar domains; The members here are composed of the first immunoglobulin (Ig)-like domain of interleukin-1 receptor (IL1R). IL-1 alpha and IL-1 beta are cytokines which participate in the regulation of inflammation, immune responses, and hematopoiesis. These cytokines bind to the IL-1 receptor type 1 (IL1R1), which is activated on additional association with interleukin-1 receptor accessory protein (IL1RAP). IL-1 also binds a second receptor designated type II (IL1R2). Mature IL1R1 consists of three Ig-like domains, a transmembrane domain, and a large cytoplasmic domain. Mature IL1R2 is organized similarly except that it has a short cytoplasmic domain. The latter does not initiate signal transduction. IL-1 receptor antagonist (IL-1RA), a naturally occurring cytokine, is widely expressed and binds to IL-1 receptors, inhibiting the binding of IL-1 alpha and IL-1 beta. Pssm-ID: 409583 Cd Length: 91 Bit Score: 49.98 E-value: 7.05e-08
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| Ig2_IL-1RAP_like | cd20993 | Second immunoglobulin (Ig)-like domain of interleukin-1 receptor (IL1R), and similar domains; ... |
146-242 | 2.06e-07 | ||||||
Second immunoglobulin (Ig)-like domain of interleukin-1 receptor (IL1R), and similar domains; The members here are composed of the second immunoglobulin (Ig)-like domain of interleukin-1 receptor (IL1R). IL-1 alpha and IL-1 beta are cytokines which participate in the regulation of inflammation, immune responses, and hematopoiesis. These cytokines bind to the IL-1 receptor type 1 (IL1R1), which is activated on additional association with interleukin-1 receptor accessory protein (IL1RAP). IL-1 also binds a second receptor designated type II (IL1R2). Mature IL1R1 consists of three IG-like domains, a transmembrane domain, and a large cytoplasmic domain. Mature IL1R2 is organized similarly except that it has a short cytoplasmic domain. The latter does not initiate signal transduction. A naturally occurring cytokine IL-1RA (IL-1 receptor antagonist) is widely expressed and binds to IL-1 receptors, inhibiting the binding of IL-1 alpha and IL-1 beta. This group also contains ILIR-like 1 (IL1R1L) which maps to the same chromosomal location as IL1R1 and IL1R2. Pssm-ID: 409585 Cd Length: 93 Bit Score: 48.74 E-value: 2.06e-07
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| IG_like | smart00410 | Immunoglobulin like; IG domains that cannot be classified into one of IGv1, IGc1, IGc2, IG. |
50-137 | 3.53e-07 | ||||||
Immunoglobulin like; IG domains that cannot be classified into one of IGv1, IGc1, IGc2, IG. Pssm-ID: 214653 [Multi-domain] Cd Length: 85 Bit Score: 47.50 E-value: 3.53e-07
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| Ig1_IL1RAPL-1_like | cd05896 | First immunoglobulin (Ig)-like domain of X-linked interleukin-1 receptor accessory ... |
48-137 | 5.36e-07 | ||||||
First immunoglobulin (Ig)-like domain of X-linked interleukin-1 receptor accessory protein-like 1 (IL1RAPL-1), and similar domains; The members here are composed of the first immunoglobulin (Ig)-like domain of X-linked interleukin-1 receptor accessory protein-like 1 (IL1RAPL-1). IL-1 alpha and IL-1 beta are cytokines which participate in the regulation of inflammation, immune responses, and hematopoiesis. These cytokines bind to the IL-1 receptor type 1 (IL1R1), which is activated on additional association with interleukin-1 receptor accessory protein (IL1RAP). IL-1 also binds a second receptor designated type II (IL1R2). Mature IL1R1 consists of three Ig-like domains, a transmembrane domain, and a large cytoplasmic domain. Mature IL1R2 is organized similarly except that it has a short cytoplasmic domain. The latter does not initiate signal transduction. A naturally occurring cytokine IL-1RA (IL-1 receptor antagonist) is widely expressed and binds to IL-1 receptors, inhibiting the binding of IL-1 alpha and IL-1 beta. IL1RAPL is encoded by a gene on the X-chromosome, this gene is wholly or partially deleted in multiple cases of non-syndromic intellectual disability. This group also contains IL1RAPL-2 which is also encoded by a gene on the X-chromosome and is a candidate for another non-syndromic intellectual disability loci. Pssm-ID: 409477 Cd Length: 105 Bit Score: 47.64 E-value: 5.36e-07
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| Ig1_IL1R_like | cd20992 | First immunoglobulin (Ig)-like domain of interleukin-1 receptor (IL1R), and similar domains; ... |
55-137 | 6.55e-06 | ||||||
First immunoglobulin (Ig)-like domain of interleukin-1 receptor (IL1R), and similar domains; The members here are composed of the first immunoglobulin (Ig)-like domain of interleukin-1 receptor (IL1R). IL-1 alpha and IL-1 beta are cytokines which participate in the regulation of inflammation, immune responses, and hematopoiesis. These cytokines bind to the IL-1 receptor type 1 (IL1R1), which is activated on additional association with interleukin-1 receptor accessory protein (IL1RAP). IL-1 also binds a second receptor designated type II (IL1R2). Mature IL1R1 consists of three Ig-like domains, a transmembrane domain, and a large cytoplasmic domain. Mature IL1R2 is organized similarly except that it has a short cytoplasmic domain. The latter does not initiate signal transduction. A naturally occurring cytokine IL-1RA (IL-1 receptor antagonist) is widely expressed and binds to IL-1 receptors, inhibiting the binding of IL-1 alpha and IL-1 beta. Pssm-ID: 409584 Cd Length: 108 Bit Score: 44.92 E-value: 6.55e-06
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| Ig_3 | pfam13927 | Immunoglobulin domain; This family contains immunoglobulin-like domains. |
249-342 | 2.29e-05 | ||||||
Immunoglobulin domain; This family contains immunoglobulin-like domains. Pssm-ID: 464046 [Multi-domain] Cd Length: 78 Bit Score: 42.17 E-value: 2.29e-05
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| IG_like | smart00410 | Immunoglobulin like; IG domains that cannot be classified into one of IGv1, IGc1, IGc2, IG. |
162-240 | 5.03e-05 | ||||||
Immunoglobulin like; IG domains that cannot be classified into one of IGv1, IGc1, IGc2, IG. Pssm-ID: 214653 [Multi-domain] Cd Length: 85 Bit Score: 41.72 E-value: 5.03e-05
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| Ig_6 | pfam18452 | Immunoglobulin domain; This is an immunoglobulin domain which can be found in Interleukin-18 ... |
91-151 | 9.00e-05 | ||||||
Immunoglobulin domain; This is an immunoglobulin domain which can be found in Interleukin-18 receptor alpha (IL-18Ra). IL-18Ra ectodomain folds into three immunoglobulin (Ig)-like domains, similar to IL-1 receptors. Each domain comprises a two-layer sandwich of six to nine beta-strands and contains at least one intra-domain disulfide bond. Pssm-ID: 465773 Cd Length: 128 Bit Score: 42.02 E-value: 9.00e-05
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| ig | pfam00047 | Immunoglobulin domain; Members of the immunoglobulin superfamily are found in hundreds of ... |
253-353 | 1.02e-04 | ||||||
Immunoglobulin domain; Members of the immunoglobulin superfamily are found in hundreds of proteins of different functions. Examples include antibodies, the giant muscle kinase titin and receptor tyrosine kinases. Immunoglobulin-like domains may be involved in protein-protein and protein-ligand interactions. Pssm-ID: 395002 Cd Length: 86 Bit Score: 40.64 E-value: 1.02e-04
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| Ig3_IL1RAP | cd20931 | Third immunoglobulin domain of interleukin-1 receptor accessory protein (IL1RAP); The members ... |
249-355 | 1.18e-04 | ||||||
Third immunoglobulin domain of interleukin-1 receptor accessory protein (IL1RAP); The members here are composed of the third immunoglobulin Ig interleukin-1 receptor accessory protein (IL1RAP). The interleukin 1 receptor accessory protein (IL-1RAP), also known as IL-1R3, is a coreceptor of type 1 interleukin 1 receptor (IL-1R1) and is required for transmission of IL-1 signaling. The activated IL-1 receptor complex, which consists of IL-1R1 and IL-1RAP, induces multiple cellular responses including NF-kappa-B activation, IL-2 secretion, and IL-2 promoter activation. Signaling involves the recruitment of adapter molecules such as TOLLIP, MYD88, and IRAK1 or IRAK2 via the respective Toll/IL-1 receptor (TIR) domains of the receptor/coreceptor subunits. Moreover, IL1RAP is known to be the accessory co-receptor that activates signal transduction upon IL-36 binding to IL-36R. IL-36 cytokines, which are a subfamily of the IL-1 superfamily, bind to the IL-36 receptor (IL-36R) and use IL1RAP as a co-receptor. Pssm-ID: 409525 Cd Length: 107 Bit Score: 41.17 E-value: 1.18e-04
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| I-set | pfam07679 | Immunoglobulin I-set domain; |
249-354 | 1.25e-04 | ||||||
Immunoglobulin I-set domain; Pssm-ID: 400151 [Multi-domain] Cd Length: 90 Bit Score: 40.70 E-value: 1.25e-04
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| Ig | cd00096 | Immunoglobulin domain; The members here are composed of the immunoglobulin (Ig) domain found ... |
162-229 | 4.35e-04 | ||||||
Immunoglobulin domain; The members here are composed of the immunoglobulin (Ig) domain found in the Ig superfamily. The Ig superfamily is a heterogenous group of proteins, built on a common fold comprised of a sandwich of two beta sheets. Members of this group are components of immunoglobulin, neuroglia, cell surface glycoproteins, including T-cell receptors, CD2, CD4, CD8, and membrane glycoproteins, including butyrophilin and chondroitin sulfate proteoglycan core protein. A predominant feature of most Ig domains is a disulfide bridge connecting the two beta-sheets with a tryptophan residue packed against the disulfide bond. Ig superfamily (IgSF) domains can be divided into 4 main classes based on their structures and sequences: the Variable (V), Constant 1 (C1), Constant 2 (C2), and Intermediate (I) sets. Typically, the V-set domains have A, B, E, and D strands in one sheet and A', G, F, C, C' and C" in the other. The structures in C1-set are smaller than those in the V-set; they have one beta sheet that is formed by strands A, B, E, and D and the other by strands G, F, C, and C'. Moreover, a C1-set Ig domain contains a short C' strand (three residues) and lacks A' and C" strand. Unlike other Ig domain sets, C2-set structures do not have a D strand. Like the V-set Ig domains, members of the I-set have a discontinuous A strand, but lack a C" strand. Pssm-ID: 409353 [Multi-domain] Cd Length: 70 Bit Score: 38.46 E-value: 4.35e-04
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| Ig | cd00096 | Immunoglobulin domain; The members here are composed of the immunoglobulin (Ig) domain found ... |
60-124 | 1.50e-03 | ||||||
Immunoglobulin domain; The members here are composed of the immunoglobulin (Ig) domain found in the Ig superfamily. The Ig superfamily is a heterogenous group of proteins, built on a common fold comprised of a sandwich of two beta sheets. Members of this group are components of immunoglobulin, neuroglia, cell surface glycoproteins, including T-cell receptors, CD2, CD4, CD8, and membrane glycoproteins, including butyrophilin and chondroitin sulfate proteoglycan core protein. A predominant feature of most Ig domains is a disulfide bridge connecting the two beta-sheets with a tryptophan residue packed against the disulfide bond. Ig superfamily (IgSF) domains can be divided into 4 main classes based on their structures and sequences: the Variable (V), Constant 1 (C1), Constant 2 (C2), and Intermediate (I) sets. Typically, the V-set domains have A, B, E, and D strands in one sheet and A', G, F, C, C' and C" in the other. The structures in C1-set are smaller than those in the V-set; they have one beta sheet that is formed by strands A, B, E, and D and the other by strands G, F, C, and C'. Moreover, a C1-set Ig domain contains a short C' strand (three residues) and lacks A' and C" strand. Unlike other Ig domain sets, C2-set structures do not have a D strand. Like the V-set Ig domains, members of the I-set have a discontinuous A strand, but lack a C" strand. Pssm-ID: 409353 [Multi-domain] Cd Length: 70 Bit Score: 36.92 E-value: 1.50e-03
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| IgI_C2_MyBP-C-like | cd20967 | Domain C2 of human cardiac Myosin Binding Protein C and similar domains; a member of the I-set ... |
173-220 | 3.83e-03 | ||||||
Domain C2 of human cardiac Myosin Binding Protein C and similar domains; a member of the I-set of IgSF domains; The members here are composed of the immunoglobulin (Ig) Domain C2 of human cardiac Myosin Binding Protein C (MyBP-C) and similar domains. MyBP-C is a thick filament protein involved in the regulation of muscle contraction. Mutations in cardiac MyBP-C gene are the second most frequent cause of hypertrophic cardiomyopathy. MyBP-C binds to myosin with two binding sites, one at its C-terminus and another at its N-terminus. The N-terminal binding site, consisting of immunoglobulin (lg) domains C1 and C2 connected by a flexible linker, interacts with the S2 segment of myosin in a phosphorylation-regulated manner. The C1 and C2 Ig domains can bind to and activate or inhibit the thin filament. IgSF domains can be divided into 4 main classes based on their structures and sequences: the Variable (V), Constant 1 (C1), Constant 2 (C2), and Intermediate (I) sets. Unlike the V-set, one of the distinctive features of I-set domains is the lack of a C" strand. The structures of the Ig domains of MyBP-C lack this strand and thus belong to the I-set of Ig superfamily domains. I-set domains are found in several cell adhesion molecules (such as VCAM, ICAM, and MADCAM), and are also present in numerous other diverse protein families, including several tyrosine-protein kinase receptors. Pssm-ID: 409559 Cd Length: 82 Bit Score: 36.07 E-value: 3.83e-03
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| ig | pfam00047 | Immunoglobulin domain; Members of the immunoglobulin superfamily are found in hundreds of ... |
50-135 | 4.04e-03 | ||||||
Immunoglobulin domain; Members of the immunoglobulin superfamily are found in hundreds of proteins of different functions. Examples include antibodies, the giant muscle kinase titin and receptor tyrosine kinases. Immunoglobulin-like domains may be involved in protein-protein and protein-ligand interactions. Pssm-ID: 395002 Cd Length: 86 Bit Score: 36.40 E-value: 4.04e-03
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| I-set | pfam07679 | Immunoglobulin I-set domain; |
81-137 | 6.76e-03 | ||||||
Immunoglobulin I-set domain; Pssm-ID: 400151 [Multi-domain] Cd Length: 90 Bit Score: 35.70 E-value: 6.76e-03
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| CD19_double_Ig | cd23997 | CD19 (Cluster of Differentiation 19), a unique double immunoglobulin (Ig)-fold domain; CD19, ... |
56-137 | 9.26e-03 | ||||||
CD19 (Cluster of Differentiation 19), a unique double immunoglobulin (Ig)-fold domain; CD19, also known as B-Lymphocyte Surface Antigen B4, T-Cell Surface Antigen Leu-12, and CVID3, is a transmembrane receptor present on various types of B cells, including progenitor, naive, and memory B cells, as well as plasmablasts. Until recently, it was believed to comprise two extracellular immunoglobulin (Ig) structural domains arranged in tandem with C2 topology. However, recent crystal structures have shown that the CD19 extracellular domain contains a unique double Ig domain that is responsible for its binding to proteins such as CD21, CD81, and CD225, which regulate B cell activation and survival. A recent analysis of the CD19 extracellular domain sequence reveals two "Ig domains", but the structure demonstrates that these two domains are not folded independently and connected in tandem. Rather, they fold together as one intertwined domain that can be referred to as a "double Ig" domain. Each of the two regular Ig domain sequences has a noticeably short linker that forms a loop between strands C' and D, rather than allowing the formation of a C" strand. Additionally, the two Ig-domain sequences are separated by a long linker that is structured as a small insertion domain, enabling both Ig sequences to fold together as a unique double Ig-domain. The CD19 domain comprises four "protodomains": two formed by A'B-CC' strands and two by DE-FG strands that interdigitate to form a novel double Ig fold. When analyzing this double Ig domain in terms of the usual Ig-fold, A'B-CC' protodomain of the first Ig sequence combines with DE-FG protodomain of the second, and vice versa. Hence, the second combined Ig fold is inverted, with DE-FG protodomain of the first Ig sequence combining with A'B-CC' protodomain of the second Ig sequence and in that order, as if it were a circular permutation, obtained only through structural folding. Pssm-ID: 467824 Cd Length: 89 Bit Score: 35.39 E-value: 9.26e-03
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| IgI_4_hemolin-like | cd20978 | Fourth immunoglobulin (Ig)-like domain of hemolin, and similar domains; a member of the I-set ... |
54-137 | 9.44e-03 | ||||||
Fourth immunoglobulin (Ig)-like domain of hemolin, and similar domains; a member of the I-set of IgSF domains; The members here are composed of the fourth immunoglobulin (Ig)-like domain of hemolin and similar proteins. Hemolin, an insect immunoglobulin superfamily (IgSF) member containing four Ig-like domains, is a lipopolysaccharide-binding immune protein induced during bacterial infection. Hemolin shares significant sequence similarity with the first four Ig-like domains of the transmembrane cell adhesion molecules (CAMs) of the L1 family. IgSF domains can be divided into 4 main classes based on their structures and sequences: the Variable (V), Constant 1 (C1), Constant 2 (C2), and Intermediate (I) sets. The fourth Ig-like domain of hemolin is a member of the I-set Ig domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set domains, members of the I-set have a discontinuous A strand but lack a C" strand. I-set domains are found in several cell adhesion molecules (such as VCAM, ICAM, and MADCAM), and are also present in numerous other diverse protein families, including several tyrosine-protein kinase receptors, the muscle proteins titin, telokin, and twitchin, the neuronal adhesion molecule axonin-1, and the signaling molecule semaphorin 4D that is involved in axonal guidance, immune function and angiogenesis. Pssm-ID: 409570 [Multi-domain] Cd Length: 88 Bit Score: 35.06 E-value: 9.44e-03
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| PHA02633 | PHA02633 | hypothetical protein; Provisional |
86-137 | 9.46e-03 | ||||||
hypothetical protein; Provisional Pssm-ID: 165016 Cd Length: 63 Bit Score: 34.57 E-value: 9.46e-03
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