Coltuximab Fab in complex with anti-Kappa VHH domain


Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
D [auth L]Chromoe6aniL1 A: beta barrelsX: FAD-linked reductases, C-terminal domain-likeH: FAD-linked reductases-CT: FAD-linked reductases-CF: ChromoECOD (v294.2)
F [auth M]ATP-synt_Epse6aniM1 A: beta barrelsX: FAD-linked reductases, C-terminal domain-likeH: FAD-linked reductases-CT: FAD-linked reductases-CF: ATP-synt_EpsECOD (v294.2)
C [auth H]Chromoe6aniH1 A: beta barrelsX: FAD-linked reductases, C-terminal domain-likeH: FAD-linked reductases-CT: FAD-linked reductases-CF: ChromoECOD (v294.2)
E [auth I]ATP-synt_Epse6aniI1 A: beta barrelsX: FAD-linked reductases, C-terminal domain-likeH: FAD-linked reductases-CT: FAD-linked reductases-CF: ATP-synt_EpsECOD (v294.2)

Domain Annotation: CATH CATH Database Homepage

ChainDomainClassArchitectureTopologyHomologyProvenance Source (Version)
D [auth L]2.60.40.10 Mainly Beta Sandwich Immunoglobulin-like ImmunoglobulinsCATH (4.3.0)
F [auth M]2.60.40.10 Mainly Beta Sandwich Immunoglobulin-like ImmunoglobulinsCATH (4.3.0)
C [auth H]2.60.40.10 Mainly Beta Sandwich Immunoglobulin-like ImmunoglobulinsCATH (4.3.0)
E [auth I]2.60.40.10 Mainly Beta Sandwich Immunoglobulin-like ImmunoglobulinsCATH (4.3.0)

IMGT Antibody Annotation IMGT Database Homepage

ChainProtein NameDescriptionOrganism NameGene Allele Name(s)Domain Name(s)Receptor TypeReceptor DescriptionProvenance Source
D [auth L],
F [auth M]
Fab Coltuximab L-KAPPA Homo sapiens (human) IGKV4-70*01, IGKJ1*01, IGKJ2*01, IGKC*01 V-DOMAIN V-KAPPA, C-DOMAIN C-KAPPA IG FAB-GAMMA-1_KAPPA IMGT (202618-0)
C [auth H],
E [auth I]
Fab Coltuximab VH-CH1 Homo sapiens (human) IGHV1-69*02, IGHJ4*01, IGHG1*01, IGHG1*02, IGHG1*04, IGHG1*05 V-DOMAIN VH, C-DOMAIN CH1 IG FAB-GAMMA-1_KAPPA IMGT (202618-0)

SAbDab Antibody Annotation SAbDab Database Homepage

ChainChain ClassChain SubclassChain TypeAntigen Name(s) Provenance Source
D [auth L],
F [auth M]
Light ChainIGKV4 Kappa-SAbDab (2026-05-15)
C [auth H],
E [auth I]
Heavy ChainIGHV1 --SAbDab (2026-05-15)

Thera-SAbDab Antibody Annotation Thera-SAbDab Database Homepage

ChainNameTargetProvenance Source
D [auth L],
F [auth M]
Loncastuximab CD19Therapeutic SAbDab (2026-05-15)
C [auth H],
E [auth I]
Loncastuximab CD19Therapeutic SAbDab (2026-05-15)