5FOB
Crystal Structure of Human Complement C3b in complex with Smallpox Inhibitor of Complement (SPICE)
Functional Information from GO Data
| Chain | GOid | namespace | contents |
| A | 0004866 | molecular_function | endopeptidase inhibitor activity |
| B | 0004866 | molecular_function | endopeptidase inhibitor activity |
| B | 0005576 | cellular_component | extracellular region |
| B | 0005615 | cellular_component | extracellular space |
| C | 0001848 | molecular_function | complement binding |
| C | 0016020 | cellular_component | membrane |
| C | 0020002 | cellular_component | host cell plasma membrane |
| C | 0033644 | cellular_component | host cell membrane |
| C | 0042784 | biological_process | symbiont-mediated suppression of host complement activation |
| C | 0044423 | cellular_component | virion component |
| C | 0045916 | biological_process | negative regulation of complement activation |
| C | 0055036 | cellular_component | virion membrane |
Functional Information from PROSITE/UniProt
| site_id | PS00477 |
| Number of Residues | 9 |
| Details | ALPHA_2_MACROGLOBULIN Alpha-2-macroglobulin family thiolester region signature. PsGCGEEnM |
| Chain | Residue | Details |
| B | PRO1007-MET1015 |
Functional Information from SwissProt/UniProt
| site_id | SWS_FT_FI1 |
| Number of Residues | 1 |
| Details | Site: {"description":"(Microbial infection) Cleavage; by S.pyogenes SpeB","evidences":[{"source":"PubMed","id":"18160402","evidenceCode":"ECO:0000269"}]} |
| Chain | Residue | Details |
| site_id | SWS_FT_FI2 |
| Number of Residues | 7 |
| Details | Modified residue: {"description":"Phosphoserine; by FAM20C","evidences":[{"source":"PubMed","id":"26091039","evidenceCode":"ECO:0000269"}]} |
| Chain | Residue | Details |
| site_id | SWS_FT_FI3 |
| Number of Residues | 1 |
| Details | Glycosylation: {"description":"N-linked (GlcNAc...) asparagine","evidences":[{"source":"PubMed","id":"12754519","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"16263699","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"16335952","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"17051150","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"17684013","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"19159218","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"2579379","evidenceCode":"ECO:0000269"}]} |
| Chain | Residue | Details |
| site_id | SWS_FT_FI4 |
| Number of Residues | 16 |
| Details | Peptide: {"description":"Complement C3f fragment","featureId":"PRO_0000005916","evidences":[{"source":"PubMed","id":"8376604","evidenceCode":"ECO:0000269"}]} |
| Chain | Residue | Details |
| site_id | SWS_FT_FI5 |
| Number of Residues | 143 |
| Details | Domain: {"description":"NTR","evidences":[{"source":"PROSITE-ProRule","id":"PRU00295","evidenceCode":"ECO:0000255"}]} |
| Chain | Residue | Details |
| site_id | SWS_FT_FI6 |
| Number of Residues | 19 |
| Details | Region: {"description":"Disordered","evidences":[{"source":"SAM","id":"MobiDB-lite","evidenceCode":"ECO:0000256"}]} |
| Chain | Residue | Details |
| site_id | SWS_FT_FI7 |
| Number of Residues | 25 |
| Details | Region: {"description":"Interaction with CFP/properdin","evidences":[{"source":"PubMed","id":"28264884","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"31507604","evidenceCode":"ECO:0000269"}]} |
| Chain | Residue | Details |
| site_id | SWS_FT_FI8 |
| Number of Residues | 3 |
| Details | Site: {"description":"Cleavage; by factor I","evidences":[{"source":"PubMed","id":"28671664","evidenceCode":"ECO:0000305"}]} |
| Chain | Residue | Details |
| site_id | SWS_FT_FI9 |
| Number of Residues | 1 |
| Details | Site: {"description":"Coordinates Mg(2+) for interaction with Complement factor B Bb fragment (CFB)","evidences":[{"source":"PubMed","id":"28264884","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"31507604","evidenceCode":"ECO:0000269"}]} |
| Chain | Residue | Details |
| site_id | SWS_FT_FI10 |
| Number of Residues | 1 |
| Details | Glycosylation: {"description":"N-linked (GlcNAc...) asparagine","evidences":[{"source":"PubMed","id":"14760718","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"16335952","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"17051150","evidenceCode":"ECO:0000269"}]} |
| Chain | Residue | Details |
| site_id | SWS_FT_FI11 |
| Number of Residues | 1 |
| Details | Glycosylation: {"description":"N-linked (GlcNAc...) asparagine","evidences":[{"source":"PubMed","id":"16335952","evidenceCode":"ECO:0000269"}]} |
| Chain | Residue | Details |
| site_id | SWS_FT_FI12 |
| Number of Residues | 2 |
| Details | Cross-link: {"description":"Isoglutamyl cysteine thioester (Cys-Gln)","evidences":[{"source":"PubMed","id":"1577777","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"6175959","evidenceCode":"ECO:0000269"}]} |
| Chain | Residue | Details |
