Crystal structure of monoclonal anti-CD4 antibody Q425 in complex with Barium


Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
BCopper-binde2adiB1 A: alpha arraysX: Phage tail fiber protein trimerization domainH: Phage tail fiber protein trimerization domainT: Phage tail fiber protein trimerization domainF: Copper-bindECOD (v295.2)
BBe2adiB2 A: alpha arraysX: HTHH: HTHT: tetra-helical, lambda repressor-likeF: BECOD (v295.2)
AC1-sete2adiA5 A: alpha arraysX: Fusion glycoprotein F2H: Fusion glycoprotein F2T: Fusion glycoprotein F2F: C1-setECOD (v295.2)

Domain Annotation: CATH CATH Database Homepage

ChainDomainClassArchitectureTopologyHomologyProvenance Source (Version)
B2.60.40.10 Mainly Beta Sandwich Immunoglobulin-like ImmunoglobulinsCATH (4.3.0)
A2.60.40.10 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
Q425 VH-CH1 Mus musculus (house mouse) IGHV5-6-1*01, IGHV5-6*01, IGHJ2*01, IGHG1*02 V-DOMAIN VH, C-DOMAIN CH1 IG FAB-GAMMA-1_KAPPA IMGT (202633-0)
Q425 L-KAPPA Mus musculus (house mouse) IGKV17-121*01, IGKJ4*01, IGKC*01, IGKC*02 V-DOMAIN V-KAPPA, C-DOMAIN C-KAPPA IG FAB-GAMMA-1_KAPPA IMGT (202633-0)

SAbDab Antibody Annotation SAbDab Database Homepage

ChainChain ClassChain SubclassChain TypeAntigen Name(s) Provenance Source
Heavy ChainIGHV5 --SAbDab (2026-08-28)
Light ChainIGKV17 Kappa-SAbDab (2026-08-28)