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Crystal structure of the RA-associated mAb B2 (Fab fragment) External Resource: Annotation Chains Family Name Domain Identifier Architecture Possible Homology Homology Topology Family Provenance Source (Version) B ATG101 e5od8B1 A: alpha arrays X: Major facilitator superfamily (MFS) general substrate transporter H: Major facilitator superfamily (MFS) general substrate transporter T: Major facilitator superfamily (MFS) general substrate transporter F: ATG101 ECOD (v295.2) A ATG101 e5od8A1 A: alpha arrays X: Major facilitator superfamily (MFS) general substrate transporter H: Major facilitator superfamily (MFS) general substrate transporter T: Major facilitator superfamily (MFS) general substrate transporter F: ATG101 ECOD (v295.2)
Chain Protein Name Description Organism Name Gene Allele Name(s) Domain Name(s) Receptor Type Receptor Description Provenance Source mAb B2 associated with RA L-KAPPA Homo sapiens (human) IGKV1-12*01, IGKV1D-12*01, IGKV1-12*02, IGKV1D-12*02, IGKJ3*01, IGKC*01 V-DOMAIN V-KAPPA, C-DOMAIN C-KAPPA IG FAB-GAMMA-1_KAPPA IMGT (202637-0) mAb B2 associated with RA VH-CH1 Homo sapiens (human) IGHV1-69*01, IGHV1-69*06, IGHV1-69*12, IGHV1-69*13, IGHV1-69*14, IGHV1-69D*01, IGHJ4*01, IGHJ4*02, IGHJ4*03, 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 Light Chain IGKV1 Kappa - SAbDab (2026-09-25) Heavy Chain IGHV1 - - SAbDab (2026-09-25)