Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
D [auth C]V-sete5wnaC1 A: a/b three-layered sandwichesX: Periplasmic binding protein-like IIH: Rubredoxin-relatedT: Tetrapyrrole methylase C-terminal domainF: V-setECOD (v294.1)
A [auth H]Peptidase_M42e5wnaH1 A: a/b three-layered sandwichesX: Periplasmic binding protein-like IIH: Rubredoxin-relatedT: Tetrapyrrole methylase C-terminal domainF: Peptidase_M42ECOD (v294.1)
E [auth D]V-sete5wnaD1 A: a/b three-layered sandwichesX: Periplasmic binding protein-like IIH: Rubredoxin-relatedT: Tetrapyrrole methylase C-terminal domainF: V-setECOD (v294.1)
B [auth L]V-sete5wnaL1 A: a/b three-layered sandwichesX: Periplasmic binding protein-like IIH: Rubredoxin-relatedT: Tetrapyrrole methylase C-terminal domainF: V-setECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

ChainDomainClassArchitectureTopologyHomologyProvenance Source (Version)
D [auth C]2.60.40.10 Mainly Beta Sandwich Immunoglobulin-like ImmunoglobulinsCATH (4.3.0)
A [auth H]2.60.40.10 Mainly Beta Sandwich Immunoglobulin-like ImmunoglobulinsCATH (4.3.0)
E [auth D]2.60.40.10 Mainly Beta Sandwich Immunoglobulin-like ImmunoglobulinsCATH (4.3.0)
B [auth L]2.60.40.10 Mainly Beta Sandwich Immunoglobulin-like ImmunoglobulinsCATH (4.3.0)

IMGT Antibody Annotation IMGT Database Homepage

ChainProtein NameDescriptionOrganism NameGene Allele Name(s)Domain Name(s)Receptor TypeReceptor DescriptionProvenance Source
A [auth H],
D [auth C]
mAb 3D3, broadly neutralizing antibody VH-CH1 Homo sapiens (human) IGHV3-9*01, IGHJ3*01, IGHG1*01, IGHG1*02, IGHG1*04, IGHG1*05, IGHG1*12, IGHG1*14, IGHG1*13, IGHG1*09, IGHG1*10, IGHG1*07, IGHG1*11 V-DOMAIN VH, C-DOMAIN CH1 IG FAB-GAMMA-1_KAPPA IMGT (202611-0)
B [auth L],
E [auth D]
mAb 3D3, broadly neutralizing antibody L-KAPPA Homo sapiens (human) IGKV3-11*01, IGKJ2*01, IGKC*01 V-DOMAIN V-KAPPA, C-DOMAIN C-KAPPA IG FAB-GAMMA-1_KAPPA IMGT (202611-0)

SAbDab Antibody Annotation SAbDab Database Homepage

ChainChain ClassChain SubclassChain TypeAntigen Name(s) Provenance Source
A [auth H],
D [auth C]
Heavy ChainIGHV3 -major surface glycoprotein gSAbDab (2026-03-27)
B [auth L],
E [auth D]
Light ChainIGKV3 Kappamajor surface glycoprotein gSAbDab (2026-03-27)

InterPro: Protein Family Classification InterPro Database Homepage