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Crystal structure of human 4E10 Fab in complex with its peptide epitope on HIV-1 gp41; crystals cryoprotected with phosphatidylcholine (03:0 PC) External Resource: Annotation Chains Family Name Domain Identifier Architecture Possible Homology Homology Topology Family Provenance Source (Version) B [auth H] BD-FAE e4xcfH1 A: alpha arrays X: dsRBD-like H: Head and neck region of the ectodomain of paramyxoviruses fusion glycoprotein T: Head and neck region of the ectodomain of paramyxoviruses fusion glycoprotein F: BD-FAE ECOD (v295.2) B [auth H] NTP_transferase e4xcfH2 A: alpha arrays X: Lipocalins/Streptavidin H: SAM/DNA-glycosylase T: SAM domain-like F: NTP_transferase ECOD (v295.2) A [auth L] BD-FAE e4xcfL1 A: alpha arrays X: dsRBD-like H: Head and neck region of the ectodomain of paramyxoviruses fusion glycoprotein T: Head and neck region of the ectodomain of paramyxoviruses fusion glycoprotein F: BD-FAE 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] 4E10 mAb, anti-gp41 membrane-proximal external region (MPER) VH-CH1 Homo sapiens (human) IGHV1-69*10, IGHJ1*01, IGHG1*01, IGHG1*02, IGHG1*04, IGHG1*05 V-DOMAIN VH, C-DOMAIN CH1 IG FAB-GAMMA-1_KAPPA IMGT (202640-0) A [auth L] 4E10 mAb, anti-gp41 membrane-proximal external region (MPER) L-KAPPA Homo sapiens (human) IGKV3-20*01, IGKJ1*01, IGKC*01 V-DOMAIN V-KAPPA, C-DOMAIN C-KAPPA IG FAB-GAMMA-1_KAPPA IMGT (202640-0)
Chain Chain Class Chain Subclass Chain Type Antigen Name(s) Provenance Source B [auth H] Heavy Chain IGHV1 - modified fragment of hiv-1 glycoprotein (gp41) includingthe mper region 671-683 SAbDab (2026-10-16) A [auth L] Light Chain IGKV3 Kappa modified fragment of hiv-1 glycoprotein (gp41) includingthe mper region 671-683 SAbDab (2026-10-16)