Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
APF02216e6k65A1 A: alpha bundlesX: immunoglobulin/albumin-binding domain-likeH: Bacterial immunoglobulin/albumin-binding domains (From Topology)T: Bacterial immunoglobulin/albumin-binding domainsF: PF02216ECOD (1.6)
B [auth L]PF07686e6k65L1 A: beta sandwichesX: Immunoglobulin-like beta-sandwichH: Immunoglobulin-relatedT: Immunoglobulin/Fibronectin type III/E set domains/PapD-likeF: PF07686ECOD (1.6)
C [auth H]PF07686e6k65H1 A: beta sandwichesX: Immunoglobulin-like beta-sandwichH: Immunoglobulin-relatedT: Immunoglobulin/Fibronectin type III/E set domains/PapD-likeF: PF07686ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

ChainDomainClassArchitectureTopologyHomologyProvenance Source (Version)
A1.20.5.420 Mainly Alpha Up-down Bundle Single alpha-helices involved in coiled-coils or other helix-helix interfaces Immunoglobulin FC, subunit CCATH (utative)

IMGT Antibody Annotation IMGT Database Homepage

ChainProtein NameDescriptionOrganism NameGene Allele Name(s)Domain Name(s)Receptor TypeReceptor DescriptionProvenance Source
SpA IgG-binding domain proteinA SPA Staphylococcus aureus SpA*01 R-LIKE-DOMAIN SPA-DOMAIN RPI SPA IMGT (202419-0)
B [auth L]Fv 9014-1P4B V-LAMBDA Homo sapiens (human) IGLV1*01, IGLJ1*01 V-DOMAIN V-LAMBDA IG FV-HEAVY_LAMBDA IMGT (202419-0)
C [auth H]Fv 9014-1P4B VH Homo sapiens (human) IGHV2-6-7*01, IGHV2-6-7*02, IGHJ2*01 V-DOMAIN VH IG FV-HEAVY_LAMBDA IMGT (202419-0)

SAbDab Antibody Annotation SAbDab Database Homepage

ChainChain ClassChain SubclassChain TypeAntigen Name(s) Provenance Source
B [auth L]Light ChainIGLV1 Lambdaimmunoglobulin g-binding protein aSAbDab (2024-05-17)
C [auth H]Heavy ChainIGHV2 -immunoglobulin g-binding protein aSAbDab (2024-05-17)

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
PF02216B domain (B)B domainThis family contains the B domain of Staphylococcal protein A, which specifically binds to the Fc portion of immunoglobulin G.Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
Immunoglobulin G-binding protein A -
B [auth L]1P4B variable light chain---
C [auth H]1P4B variable heavy chain---