2QTJ

Solution structure of human dimeric immunoglobulin A

External Resource: Annotation


Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
A [auth L]PF07654e2qtjL2 A: beta sandwichesX: Immunoglobulin-like beta-sandwichH: Immunoglobulin-relatedT: Immunoglobulin/Fibronectin type III/E set domains/PapD-likeF: PF07654ECOD (1.6)
A [auth L]PF07686e2qtjL1 A: beta sandwichesX: Immunoglobulin-like beta-sandwichH: Immunoglobulin-relatedT: Immunoglobulin/Fibronectin type III/E set domains/PapD-likeF: PF07686ECOD (1.6)
B [auth M]PF07654e2qtjM2 A: beta sandwichesX: Immunoglobulin-like beta-sandwichH: Immunoglobulin-relatedT: Immunoglobulin/Fibronectin type III/E set domains/PapD-likeF: PF07654ECOD (1.6)
B [auth M]PF07686e2qtjM1 A: beta sandwichesX: Immunoglobulin-like beta-sandwichH: Immunoglobulin-relatedT: Immunoglobulin/Fibronectin type III/E set domains/PapD-likeF: PF07686ECOD (1.6)
E [auth N]PF07654e2qtjN2 A: beta sandwichesX: Immunoglobulin-like beta-sandwichH: Immunoglobulin-relatedT: Immunoglobulin/Fibronectin type III/E set domains/PapD-likeF: PF07654ECOD (1.6)
E [auth N]PF07686e2qtjN1 A: beta sandwichesX: Immunoglobulin-like beta-sandwichH: Immunoglobulin-relatedT: Immunoglobulin/Fibronectin type III/E set domains/PapD-likeF: PF07686ECOD (1.6)
F [auth O]PF07654e2qtjO2 A: beta sandwichesX: Immunoglobulin-like beta-sandwichH: Immunoglobulin-relatedT: Immunoglobulin/Fibronectin type III/E set domains/PapD-likeF: PF07654ECOD (1.6)
F [auth O]PF07686e2qtjO1 A: beta sandwichesX: Immunoglobulin-like beta-sandwichH: Immunoglobulin-relatedT: Immunoglobulin/Fibronectin type III/E set domains/PapD-likeF: PF07686ECOD (1.6)
C [auth A]PF00047e2qtjA4 A: beta sandwichesX: Immunoglobulin-like beta-sandwichH: Immunoglobulin-relatedT: Immunoglobulin/Fibronectin type III/E set domains/PapD-likeF: PF00047ECOD (1.6)
C [auth A]PF07654e2qtjA2 A: beta sandwichesX: Immunoglobulin-like beta-sandwichH: Immunoglobulin-relatedT: Immunoglobulin/Fibronectin type III/E set domains/PapD-likeF: PF07654ECOD (1.6)
C [auth A]PF07686e2qtjA1 A: beta sandwichesX: Immunoglobulin-like beta-sandwichH: Immunoglobulin-relatedT: Immunoglobulin/Fibronectin type III/E set domains/PapD-likeF: PF07686ECOD (1.6)
D [auth B]PF00047e2qtjB4 A: beta sandwichesX: Immunoglobulin-like beta-sandwichH: Immunoglobulin-relatedT: Immunoglobulin/Fibronectin type III/E set domains/PapD-likeF: PF00047ECOD (1.6)
D [auth B]PF07654e2qtjB2 A: beta sandwichesX: Immunoglobulin-like beta-sandwichH: Immunoglobulin-relatedT: Immunoglobulin/Fibronectin type III/E set domains/PapD-likeF: PF07654ECOD (1.6)
D [auth B]PF07686e2qtjB1 A: beta sandwichesX: Immunoglobulin-like beta-sandwichH: Immunoglobulin-relatedT: Immunoglobulin/Fibronectin type III/E set domains/PapD-likeF: PF07686ECOD (1.6)
G [auth C]PF00047e2qtjC4 A: beta sandwichesX: Immunoglobulin-like beta-sandwichH: Immunoglobulin-relatedT: Immunoglobulin/Fibronectin type III/E set domains/PapD-likeF: PF00047ECOD (1.6)
G [auth C]PF07654e2qtjC2 A: beta sandwichesX: Immunoglobulin-like beta-sandwichH: Immunoglobulin-relatedT: Immunoglobulin/Fibronectin type III/E set domains/PapD-likeF: PF07654ECOD (1.6)
G [auth C]PF07686e2qtjC1 A: beta sandwichesX: Immunoglobulin-like beta-sandwichH: Immunoglobulin-relatedT: Immunoglobulin/Fibronectin type III/E set domains/PapD-likeF: PF07686ECOD (1.6)
H [auth D]PF00047e2qtjD4 A: beta sandwichesX: Immunoglobulin-like beta-sandwichH: Immunoglobulin-relatedT: Immunoglobulin/Fibronectin type III/E set domains/PapD-likeF: PF00047ECOD (1.6)
H [auth D]PF07654e2qtjD2 A: beta sandwichesX: Immunoglobulin-like beta-sandwichH: Immunoglobulin-relatedT: Immunoglobulin/Fibronectin type III/E set domains/PapD-likeF: PF07654ECOD (1.6)
H [auth D]PF07686e2qtjD1 A: beta sandwichesX: Immunoglobulin-like beta-sandwichH: Immunoglobulin-relatedT: Immunoglobulin/Fibronectin type III/E set domains/PapD-likeF: PF07686ECOD (1.6)

IMGT Antibody Annotation IMGT Database Homepage

ChainProtein NameDescriptionOrganism NameGene Allele Name(s)Domain Name(s)Receptor TypeReceptor DescriptionProvenance Source
A [auth L],
B [auth M],
E [auth N],
F [auth O]		IgA1 L-KAPPA Homo sapiens (human) IGKV1-13*02, IGKV1D-13*02, IGKJ4*01, IGKJ4*02, IGKC*01 V-DOMAIN V-KAPPA, C-DOMAIN C-KAPPA IG IG-ALPHA-1_KAPPA IMGT (202417-0)
C [auth A],
D [auth B],
G [auth C],
H [auth D]		IgA1 H-ALPHA-1 Homo sapiens (human) IGHV1-3*01, IGHJ4*01, IGHJ4*02, IGHJ4*03, IGHA1*01 V-DOMAIN VH, C-DOMAIN CH1, C-DOMAIN CH2, C-DOMAIN CH3 IG IG-ALPHA-1_KAPPA IMGT (202417-0)

SAbDab Antibody Annotation SAbDab Database Homepage

ChainChain ClassChain SubclassChain TypeAntigen Name(s) Provenance Source
A [auth L],
B [auth M],
E [auth N],
F [auth O]		Light ChainIGKV1 Kappa-SAbDab (2024-05-03)
C [auth A],
D [auth B],
G [auth C],
H [auth D]		Heavy ChainIGHV1 --SAbDab (2024-05-03)

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
C [auth A],
D [auth B],
G [auth C],
H [auth D]		PF07686Immunoglobulin V-set domain (V-set)Immunoglobulin V-set domainThis domain is found in antibodies as well as neural protein P0 and CTL4 amongst others.Domain
C [auth A],
D [auth B],
G [auth C],
H [auth D]		PF07654Immunoglobulin C1-set domain (C1-set)Immunoglobulin C1-set domain- Domain
C [auth A],
D [auth B],
G [auth C],
H [auth D]		PF00047Immunoglobulin domain (ig)Immunoglobulin domainMembers 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-prot ...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.
Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
A [auth L],
B [auth M],
E [auth N],
F [auth O]		Kappa light chain IgA1---
C [auth A],
D [auth B],
G [auth C],
H [auth D]		Ig alpha-1 chain C region-

InterPro: Protein Family Classification InterPro Database Homepage

ChainsAccessionNameType
C [auth A],
D [auth B],
G [auth C],
H [auth D]		IPR003597Immunoglobulin C1-setDomain
C [auth A],
D [auth B],
G [auth C],
H [auth D]		IPR013783Immunoglobulin-like foldHomologous Superfamily
C [auth A],
D [auth B],
G [auth C],
H [auth D]		IPR036179Immunoglobulin-like domain superfamilyHomologous Superfamily
C [auth A],
D [auth B],
G [auth C],
H [auth D]		IPR003599Immunoglobulin subtypeDomain
C [auth A],
D [auth B],
G [auth C],
H [auth D]		IPR013106Immunoglobulin V-set domainDomain
C [auth A],
D [auth B],
G [auth C],
H [auth D]		IPR013151ImmunoglobulinDomain
C [auth A],
D [auth B],
G [auth C],
H [auth D]		IPR007110Immunoglobulin-like domainDomain
C [auth A],
D [auth B],
G [auth C],
H [auth D]		IPR003006Immunoglobulin/major histocompatibility complex, conserved siteConserved Site