Crystal structure of the HIV-2 neutralizing Fab fragment 7C8


Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
D [auth L]4HBT_3e3nz8L1 A: beta barrelsX: Lipocalins/StreptavidinH: Zn-dependent exopeptidasesT: Zn-dependent exopeptidasesF: 4HBT_3ECOD (v294.2)
B4HBT_3e3nz8B1 A: beta barrelsX: Lipocalins/StreptavidinH: Zn-dependent exopeptidasesT: Zn-dependent exopeptidasesF: 4HBT_3ECOD (v294.2)
AAHSA1e3nz8A1 A: beta barrelsX: Thioredoxin-likeH: Thioredoxin-likeT: Thioredoxin-likeF: AHSA1ECOD (v294.2)
C [auth H]4HBT_3e3nz8H1 A: beta barrelsX: Lipocalins/StreptavidinH: Zn-dependent exopeptidasesT: Zn-dependent exopeptidasesF: 4HBT_3ECOD (v294.2)

Domain Annotation: CATH CATH Database Homepage

ChainDomainClassArchitectureTopologyHomologyProvenance Source (Version)
D [auth L]2.60.40.10 Mainly Beta Sandwich Immunoglobulin-like ImmunoglobulinsCATH (4.3.0)
B2.60.40.10 Mainly Beta Sandwich Immunoglobulin-like ImmunoglobulinsCATH (4.3.0)
A2.60.40.10 Mainly Beta Sandwich Immunoglobulin-like ImmunoglobulinsCATH (4.3.0)
C [auth H]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
B,
D [auth L]
Fab 7C8, anti-gp125 V3 [HIV-2]) L-KAPPA Mus musculus (house mouse) IGKV1-117*01, IGKJ4*01, IGKC*01, IGKC*02 V-DOMAIN V-KAPPA, C-DOMAIN C-KAPPA IG FAB-GAMMA-1_KAPPA IMGT (202617-0)
A,
C [auth H]
Fab 7C8, anti-gp125 V3 [HIV-2]) VH-CH1 Mus musculus (house mouse) IGHV1-85*01, IGHJ4*01, IGHG1*01, IGHG1*02 V-DOMAIN VH, C-DOMAIN CH1 IG FAB-GAMMA-1_KAPPA IMGT (202617-0)

SAbDab Antibody Annotation SAbDab Database Homepage

ChainChain ClassChain SubclassChain TypeAntigen Name(s) Provenance Source
B,
D [auth L]
Light ChainIGKV1 Kappa-SAbDab (2026-05-08)
A,
C [auth H]
Heavy ChainIGHV1 --SAbDab (2026-05-08)