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Fab portion of dupilumab with Crystal Kappa design External Resource: Annotation Chains Family Name Domain Identifier Architecture Possible Homology Homology Topology Family Provenance Source (Version) B e6wg8B1 A: alpha arrays X: putative RnfG subunit of electron transport complex H: putative RnfG subunit of electron transport complex T: Aspartate/ornithine carbamoyltransferase F: ECOD (v295.2) A e6wg8A1 A: alpha arrays X: putative RnfG subunit of electron transport complex H: putative RnfG subunit of electron transport complex T: Aspartate/ornithine carbamoyltransferase F: ECOD (v295.2)
Chain Protein Name Description Organism Name Gene Allele Name(s) Domain Name(s) Receptor Type Receptor Description Provenance Source Fab Dupilumab L-KAPPA Homo sapiens (human) IGKV2-28*01, IGKV2D-28*01, IGKJ2*01, IGKC*01 V-DOMAIN V-KAPPA, C-DOMAIN C-KAPPA IG FAB-GAMMA-4_KAPPA IMGT (202638-0) Fab Dupilumab VH-CH1 Homo sapiens (human) IGHV3-23*04, IGHJ6*01, IGHG4*01, IGHG4*04 V-DOMAIN VH, C-DOMAIN CH1 IG FAB-GAMMA-4_KAPPA IMGT (202638-0)
Chain Chain Class Chain Subclass Chain Type Antigen Name(s) Provenance Source Light Chain IGKV2 Kappa - SAbDab (2026-10-02) Heavy Chain IGHV3 - - SAbDab (2026-10-02)
Chain Name Target Provenance Source Dupilumab IL4R/CD124 Therapeutic SAbDab (2026-10-02) Dupilumab IL4R/CD124 Therapeutic SAbDab (2026-10-02)