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Fab structure of rabbit monoclonal antibody R53 targeting an epitope in HIV-1 gp120 C4 region External Resource: Annotation Chains Family Name Domain Identifier Architecture Possible Homology Homology Topology Family Provenance Source (Version) B [auth H] SSL_OB e4ztpH2 A: alpha arrays X: Sigma2 domain-like H: Bacterial enterotoxins T: Bacterial enterotoxins F: SSL_OB ECOD (v295.2) B [auth H] EF-hand_1, EF-hand_6, EF-hand_7 e4ztpH3 A: alpha arrays X: Lipocalins/Streptavidin H: SAM/DNA-glycosylase T: SAM domain-like F: EF-hand_1, EF-hand_6, EF-hand_7 ECOD (v295.2) A [auth L] SSL_OB e4ztpL1 A: alpha arrays X: Sigma2 domain-like H: Bacterial enterotoxins T: Bacterial enterotoxins F: SSL_OB ECOD (v295.2)
Chain Protein Name Description Organism Name Gene Allele Name(s) Domain Name(s) Receptor Type Receptor Description Provenance Source B [auth H] R53 Fab VH-CH1 Oryctolagus cuniculus (rabbit) IGHV1S40*01, IGHJ6*01, IGHG*01, IGHG*05, IGHG*02 V-DOMAIN VH, C-DOMAIN CH1 IG FAB-GAMMA-KAPPA IMGT (202636-0) A [auth L] R53 Fab L-KAPPA Oryctolagus cuniculus (rabbit) IGKV1S3*01, IGKJ1-2*02, IGKJ1-2*01, IGKC1*01 V-DOMAIN V-KAPPA, C-DOMAIN C-KAPPA IG FAB-GAMMA-KAPPA IMGT (202636-0)
Chain Chain Class Chain Subclass Chain Type Antigen Name(s) Provenance Source B [auth H] Heavy Chain IGHV1 - - SAbDab (2026-09-18) A [auth L] Light Chain IGKV1 Kappa - SAbDab (2026-09-18)