3QXT | pdb_00003qxt

Structure of an Anti-Methotrexate CDR1-3 Graft VHH Antibody in Complex with Methotrexate

External Resource: Annotation


Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

ChainsDomain InfoClassFoldSuperfamilyFamilyDomainSpeciesProvenance Source (Version)
Bd3qxtb_ All beta proteins Immunoglobulin-like beta-sandwich Immunoglobulin V set domains (antibody variable domain-like) automated matches Llama (Lama glama ) [TaxId: 9844 ], SCOPe (2.08)
Ad3qxta_ All beta proteins Immunoglobulin-like beta-sandwich Immunoglobulin V set domains (antibody variable domain-like) automated matches Llama (Lama glama ) [TaxId: 9844 ], SCOPe (2.08)

Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
Brvee3qxtB1 A: a/b three-layered sandwichesX: Lipocalins/StreptavidinH: Zn-dependent exopeptidasesT: Zn-dependent exopeptidasesF: rveECOD (v294.1)
ARase3qxtA1 A: a/b three-layered sandwichesX: EF-handH: Insect pheromone/odorant-binding proteinsT: Insect pheromone/odorant-binding proteinsF: RasECOD (v294.1)

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
Anti-Methotrexate CDR1-3 Graft VH VH Lama glama (llama) IGHV3S72*01, IGHJ4*01 V-DOMAIN VH IG (VH) IMGT (202612-0)

SAbDab Antibody Annotation SAbDab Database Homepage

ChainChain ClassChain SubclassChain TypeAntigen Name(s) Provenance Source
A, B
Heavy ChainIGHV1 -METHOTREXATESAbDab (2026-03-27)