3QYC | pdb_00003qyc

Structure of a dimeric anti-HER2 single domain antibody


Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
Be3qycB1 A: beta-GraspX: Ubiquitin-relatedH: Ubiquitin-likeT: FtsJF:ECOD (20:10:01)
Ae3qycA1 A: cradle loop barrelX: RIFT-relatedH: acid proteaseT: I-setF:ECOD (20:10:01)

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
A, B
Gr6 VH dimer, anti-ERBB2 (Epidermal Growth Factor Receptor 2, VH Homo sapiens (human) IGHV3-23*04, IGHJ5*01 V-DOMAIN VH IG Fv-HEAVY_HEAVY IMGT (202609-0)

SAbDab Antibody Annotation SAbDab Database Homepage

ChainChain ClassChain SubclassChain TypeAntigen Name(s) Provenance Source
A, B
Heavy ChainIGHV3 --SAbDab (2026-03-13)