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Crystal structure of IOMA-class CLK31 Fab from an HIV-1 naive donor in complex with a germline-targeting gp120 engineered outer domain eOD-GT8 at 2.6 A External Resource: Annotation Chains Family Name Domain Identifier Architecture Possible Homology Homology Topology Family Provenance Source (Version) C [auth L] PTE e6d2pL1 A: alpha arrays X: PriB N-terminal domain-like H: Ubiquitin-related T: Ubiquitin-like F: PTE ECOD (v295.2) B [auth H] PTE e6d2pH1 A: alpha arrays X: PriB N-terminal domain-like H: Ubiquitin-related T: Ubiquitin-like F: PTE ECOD (v295.2) A [auth C] PTE e6d2pC1 A: alpha arrays X: PriB N-terminal domain-like H: Ubiquitin-related T: Ubiquitin-like F: PTE ECOD (v295.2)
Chain Protein Name Description Organism Name Gene Allele Name(s) Domain Name(s) Receptor Type Receptor Description Provenance Source C [auth L] Fab CLK31 L-LAMBDA Homo sapiens (human) IGLV2-23*01, IGLJ2*01, IGLJ3*01, IGLC2*01, IGLC2*02, IGLC3*04 V-DOMAIN V-LAMBDA, C-DOMAIN C-LAMBDA IG FAB-GAMMA-1_LAMBDA IMGT (202638-0) B [auth H] Fab CLK31 VH-CH1 Homo sapiens (human) IGHV1-2*02, IGHJ5*02, 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_LAMBDA IMGT (202638-0)
Chain Chain Class Chain Subclass Chain Type Antigen Name(s) Provenance Source C [auth L] Light Chain IGLV2 Lambda germline-targeting hiv-1 gp120 engineered outer domain eod-gt8 SAbDab (2026-10-02) B [auth H] Heavy Chain IGHV1 - germline-targeting hiv-1 gp120 engineered outer domain eod-gt8 SAbDab (2026-10-02)