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Crystal structure of ligand-free VRC03 antigen-binding fragment. External Resource: Annotation Chains Family Name Domain Identifier Architecture Possible Homology Homology Topology Family Provenance Source (Version) B [auth L] Pantoate_ligase e5jxaL1 A: alpha arrays X: cradle loop barrel H: RIFT-related T: acid protease F: Pantoate_ligase ECOD (v295.2) A [auth H] Pantoate_ligase e5jxaH1 A: alpha arrays X: cradle loop barrel H: RIFT-related T: acid protease F: Pantoate_ligase ECOD (v295.2)
Chain Protein Name Description Organism Name Gene Allele Name(s) Domain Name(s) Receptor Type Receptor Description Provenance Source B [auth L] VRC03 mAb, anti-gp120 [HIV-1], broadly neutralizing L-KAPPA Homo sapiens (human) IGKV3-11*01, IGKV3D-11*01, IGKV3D-11*03, IGKJ2*01, IGKJ2*02, IGKJ2*03, IGKJ2*04, IGKC*01 V-DOMAIN V-KAPPA, C-DOMAIN C-KAPPA IG FAB-GAMMA-1_KAPPA IMGT (202637-0) A [auth H] VRC03 mAb, anti-gp120 [HIV-1], broadly neutralizing VH-CH1 Homo sapiens (human) IGHV1-2*02, IGHJ3*01, IGHJ3*02, IGHJ5*02, IGHJ6*01, IGHJ6*02, IGHG1*01, IGHG1*02, IGHG1*04, IGHG1*05 V-DOMAIN VH, C-DOMAIN CH1 IG FAB-GAMMA-1_KAPPA IMGT (202637-0)
Chain Chain Class Chain Subclass Chain Type Antigen Name(s) Provenance Source B [auth L] Light Chain IGKV3 Kappa - SAbDab (2026-09-25)