6QU9 | pdb_00006qu9

Fab fragment of an antibody that inhibits polymerisation of alpha-1-antitrypsin

External Resource: Annotation


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

ChainsDomain InfoClassFoldSuperfamilyFamilyDomainSpeciesProvenance Source (Version)
B [auth L]d6qu9l2 All beta proteins Immunoglobulin-like beta-sandwich Immunoglobulin C1 set domains (antibody constant domain-like) automated matches (Mus musculus ) [TaxId: 10090 ], SCOPe (2.08)
B [auth L]d6qu9l1 All beta proteins Immunoglobulin-like beta-sandwich Immunoglobulin automated matches automated matches (Mus musculus ) [TaxId: 10090 ], SCOPe (2.08)
D [auth B]d6qu9b2 All beta proteins Immunoglobulin-like beta-sandwich Immunoglobulin C1 set domains (antibody constant domain-like) automated matches (Mus musculus ) [TaxId: 10090 ], SCOPe (2.08)
D [auth B]d6qu9b1 All beta proteins Immunoglobulin-like beta-sandwich Immunoglobulin automated matches automated matches (Mus musculus ) [TaxId: 10090 ], SCOPe (2.08)
C [auth A]d6qu9a_ All beta proteins Immunoglobulin-like beta-sandwich Immunoglobulin V set domains (antibody variable domain-like) automated matches (Mus musculus ) [TaxId: 10090 ], SCOPe (2.08)
A [auth H]d6qu9h_ All beta proteins Immunoglobulin-like beta-sandwich Immunoglobulin V set domains (antibody variable domain-like) automated matches (Mus musculus ) [TaxId: 10090 ], SCOPe (2.08)

Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
B [auth L]7tm_2e6qu9L1 A: a/b three-layered sandwichesX: Family A G protein-coupled receptor-likeH: Family A G protein-coupled receptor-likeT: Family A G protein-coupled receptor-likeF: 7tm_2ECOD (v294.1)
D [auth B]7tm_2e6qu9B1 A: a/b three-layered sandwichesX: Family A G protein-coupled receptor-likeH: Family A G protein-coupled receptor-likeT: Family A G protein-coupled receptor-likeF: 7tm_2ECOD (v294.1)
C [auth A]7tm_2e6qu9A1 A: a/b three-layered sandwichesX: Family A G protein-coupled receptor-likeH: Family A G protein-coupled receptor-likeT: Family A G protein-coupled receptor-likeF: 7tm_2ECOD (v294.1)
A [auth H]7tm_2e6qu9H1 A: a/b three-layered sandwichesX: Family A G protein-coupled receptor-likeH: Family A G protein-coupled receptor-likeT: Family A G protein-coupled receptor-likeF: 7tm_2ECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

ChainDomainClassArchitectureTopologyHomologyProvenance Source (Version)
B [auth L]2.60.40.10 Mainly Beta Sandwich Immunoglobulin-like ImmunoglobulinsCATH (utative)
D [auth B]2.60.40.10 Mainly Beta Sandwich Immunoglobulin-like ImmunoglobulinsCATH (utative)
C [auth A]2.60.40.10 Mainly Beta Sandwich Immunoglobulin-like ImmunoglobulinsCATH (utative)
A [auth H]2.60.40.10 Mainly Beta Sandwich Immunoglobulin-like ImmunoglobulinsCATH (utative)

IMGT Antibody Annotation IMGT Database Homepage

ChainProtein NameDescriptionOrganism NameGene Allele Name(s)Domain Name(s)Receptor TypeReceptor DescriptionProvenance Source
B [auth L],
D [auth B]		Fab 4B12 L-KAPPA Mus musculus (house mouse) IGKV19-93*01, IGKV19-93*02, IGKJ1*01, IGKC*01, IGKC*02 V-DOMAIN V-KAPPA, C-DOMAIN C-KAPPA IG FAB-GAMMA-1_KAPPA IMGT (202611-0)
A [auth H],
C [auth A]		Fab 4B12 VH-CH1 Mus musculus (house mouse) IGHV1-43*01, IGHJ4*01, IGHG1*02 V-DOMAIN VH, C-DOMAIN CH1 IG FAB-GAMMA-1_KAPPA IMGT (202611-0)

SAbDab Antibody Annotation SAbDab Database Homepage

ChainChain ClassChain SubclassChain TypeAntigen Name(s) Provenance Source
B [auth L],
D [auth B]		Light ChainIGKV19 Kappa-SAbDab (2026-03-27)
A [auth H],
C [auth A]		Heavy ChainIGHV1 --SAbDab (2026-03-27)