Structure of a complement factor-receptor complex
Domain Annotation: SCOP2 Classification SCOP2 Database Homepage
| Chains | Type | Family Name | Domain Identifier | Family Identifier | Provenance Source (Version) |
|---|---|---|---|---|---|
| B [auth A] | SCOP2B Superfamily | Terpenoid cyclases/Protein prenyltransferases | 8038414 | 3001024 | SCOP2B (2022-06-29) |
| C [auth D] | SCOP2B Superfamily | vWA-like | 8033178 | 3000832 | SCOP2B (2022-06-29) |
| F [auth H] | SCOP2B Superfamily | vWA-like | 8033178 | 3000832 | SCOP2B (2022-06-29) |
Domain Annotation: ECOD Classification ECOD Database Homepage
| Chains | Family Name | Domain Identifier | Architecture | Possible Homology | Homology | Topology | Family | Provenance Source (Version) |
|---|---|---|---|---|---|---|---|---|
| A [auth B] | A2M_N_1 | e7akkB1 | A: beta sandwiches | X: Immunoglobulin-like beta-sandwich | H: Immunoglobulin-related | T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like | F: A2M_N_1 | ECOD (1.6) |
| A [auth B] | KOG1366_2nd_1 | e7akkB4 | A: beta sandwiches | X: Immunoglobulin-like beta-sandwich | H: Immunoglobulin-related | T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like | F: KOG1366_2nd_1 | ECOD (1.6) |
| A [auth B] | MG4 | e7akkB2 | A: beta sandwiches | X: Immunoglobulin-like beta-sandwich | H: Immunoglobulin-related | T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like | F: MG4 | ECOD (1.6) |
| A [auth B] | KOG1366_1st | e7akkB3 | A: beta sandwiches | X: Immunoglobulin-like beta-sandwich | H: Immunoglobulin-related | T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like | F: KOG1366_1st | ECOD (1.6) |
| A [auth B] | ANATO | e7akkB6 | A: beta sandwiches | X: Immunoglobulin-like beta-sandwich | H: Immunoglobulin-related | T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like | F: ANATO | ECOD (1.6) |
| A [auth B] | A2M_N_2 | e7akkB5 | A: beta sandwiches | X: Immunoglobulin-like beta-sandwich | H: Immunoglobulin-related | T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like | F: A2M_N_2 | ECOD (1.6) |
| D [auth C] | A2M_N_1 | e7akkC2 | A: beta sandwiches | X: Immunoglobulin-like beta-sandwich | H: Immunoglobulin-related | T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like | F: A2M_N_1 | ECOD (1.6) |
| D [auth C] | KOG1366_2nd_1 | e7akkC5 | A: beta sandwiches | X: Immunoglobulin-like beta-sandwich | H: Immunoglobulin-related | T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like | F: KOG1366_2nd_1 | ECOD (1.6) |
| D [auth C] | MG4 | e7akkC1 | A: beta sandwiches | X: Immunoglobulin-like beta-sandwich | H: Immunoglobulin-related | T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like | F: MG4 | ECOD (1.6) |
| D [auth C] | KOG1366_1st | e7akkC6 | A: beta sandwiches | X: Immunoglobulin-like beta-sandwich | H: Immunoglobulin-related | T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like | F: KOG1366_1st | ECOD (1.6) |
| D [auth C] | ANATO | e7akkC3 | A: beta sandwiches | X: Immunoglobulin-like beta-sandwich | H: Immunoglobulin-related | T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like | F: ANATO | ECOD (1.6) |
| D [auth C] | A2M_N_2 | e7akkC4 | A: beta sandwiches | X: Immunoglobulin-like beta-sandwich | H: Immunoglobulin-related | T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like | F: A2M_N_2 | ECOD (1.6) |
| E | NTR | e7akkE1 | A: beta barrels | X: OB-fold | H: TIMP-like (From Topology) | T: TIMP-like | F: NTR | ECOD (1.6) |
| E | A2M_C | e7akkE3 | A: beta sandwiches | X: Immunoglobulin-like beta-sandwich | H: Immunoglobulin-related | T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like | F: A2M_C | ECOD (1.6) |
| E | A2M_N | e7akkE4 | A: beta sandwiches | X: Immunoglobulin-like beta-sandwich | H: Immunoglobulin-related | T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like | F: A2M_N | ECOD (1.6) |
| E | A2M_recep | e7akkE2 | A: beta sandwiches | X: Immunoglobulin-like beta-sandwich | H: Immunoglobulin-related | T: Common fold of diphtheria toxin/transcription factors/cytochrome f | F: A2M_recep | ECOD (1.6) |
| C [auth D] | VWA | e7akkD1 | A: a/b three-layered sandwiches | X: HAD domain-like | H: HAD domain-related | T: vWA-like | F: VWA | ECOD (1.6) |
| F [auth H] | VWA | e7akkH1 | A: a/b three-layered sandwiches | X: HAD domain-like | H: HAD domain-related | T: vWA-like | F: VWA | ECOD (1.6) |
Domain Annotation: CATH CATH Database Homepage
| Chain | Domain | Class | Architecture | Topology | Homology | Provenance Source (Version) |
|---|---|---|---|---|---|---|
| B [auth A] | 2.60.40.10 | Mainly Beta | Sandwich | Immunoglobulin-like | Immunoglobulins | CATH (utative) |
| B [auth A] | 1.50.10.20 | Mainly Alpha | Alpha/alpha barrel | Glycosyltransferase | CATH (utative) | |
| E | 2.60.40.10 | Mainly Beta | Sandwich | Immunoglobulin-like | Immunoglobulins | CATH (utative) |
Protein Family Annotation Pfam Database Homepage
| Chains | Accession | Name | Description | Comments | Source |
|---|---|---|---|---|---|
| A [auth B], D [auth C] | PF17790 | Macroglobulin domain MG1 (MG1) | Macroglobulin domain MG1 | This entry represents the N-terminal macroglobulin domain found in complement proteins C3, C4 and C5. | Domain |
| A [auth B], D [auth C] | PF17791 | Macroglobulin domain MG3 (MG3) | Macroglobulin domain MG3 | This entry corresponds to the MG3 domain found in complement components C3, C4 and C5. | Domain |
| A [auth B], D [auth C] | PF01835 | MG2 domain (MG2) | MG2 domain | This is the MG2 (macroglobulin) domain of alpha-2-macroglobulin in eukaryotes [1]. Alpha-2-macroglobulins (A2Ms) are plasma proteins that trap and inhibit a broad range of proteases and are major components of the eukaryotic innate immune system. How ... | Domain |
| A [auth B], D [auth C] | PF17789 | Macroglobulin domain MG4 (MG4) | Macroglobulin domain MG4 | This domain is MG4 found in complement C3 and C5 proteins. | Domain |
| A [auth B], D [auth C] | PF07703 | Alpha-2-macroglobulin bait region domain (A2M_BRD) | Alpha-2-macroglobulin bait region domain | Alpha-2-macroglobulins (A2Ms) are plasma proteins that trap and inhibit a broad range of proteases and are major components of the eukaryotic innate immune system. However, A2M-like proteins were identified in pathogenically invasive bacteria and spe ... | Domain |
| B [auth A], E | PF00207 | Alpha-2-macroglobulin family (A2M) | Alpha-2-macroglobulin family | - | Family |
| B [auth A], E | PF01759 | UNC-6/NTR/C345C module (NTR) | UNC-6/NTR/C345C module | Sequence similarity between netrin UNC-6 and C345C complement protein family members, and hence the existence of the UNC-6 module, was first reported in [1]. Subsequently, many additional members of the family were identified on the basis of sequence ... | Domain |
| B [auth A], E | PF21406 | Complement component 3, CUB domain, first segment (C3_CUB1) | Complement component 3, CUB domain, first segment | This entry represents the first segment of the CUB domain from complement component C3, which is completed but a second segment represented in Pfam:PF21308. The CUB domain is interrupted by the TE domain. The CUB domain forms a massive, tightly packe ... | Domain |
| B [auth A], E | PF07678 | A-macroglobulin TED domain (TED_complement) | A-macroglobulin TED domain | - | Repeat |
| B [auth A], E | PF07677 | A-macroglobulin receptor binding domain (A2M_recep) | A-macroglobulin receptor binding domain | This family includes the receptor binding domain region of the alpha-2-macroglobulin family. | Domain |
| C [auth D], F [auth H] | PF00092 | von Willebrand factor type A domain (VWA) | von Willebrand factor type A domain | Domain |














