4KY1 | pdb_00004ky1

humanized HP1/2 Fab


Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
B [auth H]Bromodomaine4ky1H1 A: a/b three-layered sandwichesX: immunoglobulin/albumin-binding domain-likeH: EGF-relatedT: Complement control module/SCR domainF: BromodomainECOD (v294.1)
A [auth L]Bromodomaine4ky1L1 A: a/b three-layered sandwichesX: immunoglobulin/albumin-binding domain-likeH: EGF-relatedT: Complement control module/SCR domainF: BromodomainECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

ChainDomainClassArchitectureTopologyHomologyProvenance Source (Version)
B [auth H]2.60.40.10 Mainly Beta Sandwich Immunoglobulin-like ImmunoglobulinsCATH (4.3.0)
A [auth L]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
B [auth H]IMMUNOGLOBULIN IGG1 FAB VH-CH1 Homo sapiens (human) IGHV1-69-2*01, IGHJ1*01, IGHG1*01, IGHG1*02, IGHG1*04 V-DOMAIN VH, C-DOMAIN CH1 IG FAB-GAMMA-1_KAPPA IMGT (202614-0)
A [auth L]IMMUNOGLOBULIN IGG1 FAB L-KAPPA Homo sapiens (human) IGKV4-1*01, IGKJ1*01, IGKJ2*01, IGKC*01 V-DOMAIN V-KAPPA, C-DOMAIN C-KAPPA IG FAB-GAMMA-1_KAPPA IMGT (202614-0)

SAbDab Antibody Annotation SAbDab Database Homepage

ChainChain ClassChain SubclassChain TypeAntigen Name(s) Provenance Source
B [auth H]Heavy ChainIGHV1 --SAbDab (2026-04-17)
A [auth L]Light ChainIGKV4 Kappa-SAbDab (2026-04-17)