4JPI | pdb_00004jpi

Crystal structure of a putative VRC01 germline precursor Fab


Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
D [auth B]RRM_1e4jpiB1 A: a/b three-layered sandwichesX: beta-GraspH: HTHT: winged helix domainF: RRM_1ECOD (v294.1)
B [auth L]RRM_1e4jpiL1 A: a/b three-layered sandwichesX: beta-GraspH: HTHT: winged helix domainF: RRM_1ECOD (v294.1)
C [auth A]RRM_1e4jpiA1 A: a/b three-layered sandwichesX: beta-GraspH: HTHT: winged helix domainF: RRM_1ECOD (v294.1)
A [auth H]V-sete4jpiH3 A: a/b three-layered sandwichesX: Subtilisin-likeH: Subtilisin-likeT: Subtilisin-likeF: V-setECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

ChainDomainClassArchitectureTopologyHomologyProvenance Source (Version)
D [auth B]2.60.40.10 Mainly Beta Sandwich Immunoglobulin-like ImmunoglobulinsCATH (4.3.0)
B [auth L]2.60.40.10 Mainly Beta Sandwich Immunoglobulin-like ImmunoglobulinsCATH (4.3.0)
C [auth A]2.60.40.10 Mainly Beta Sandwich Immunoglobulin-like ImmunoglobulinsCATH (4.3.0)
A [auth H]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 L],
D [auth B]
VRC01 mAb, anti-gp120 CD4-binding site (CD4bs) [HIV-1], broadly L-KAPPA Homo sapiens (human) IGKV3-11*01, IGKJ2*01, IGKJ2*03, IGKJ2*04, IGKC*01 V-DOMAIN V-KAPPA, C-DOMAIN C-KAPPA IG FAB-GAMMA-1_KAPPA IMGT (202611-0)
A [auth H],
C [auth A]
VRC01 mAb, anti-gp120 CD4-binding site (CD4bs) [HIV-1], broadly VH-CH1 Homo sapiens (human) IGHV1-2*02, IGHJ1*01, IGHG1*01, IGHG1*02, IGHG1*04 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 ChainIGKV3 Kappa-SAbDab (2026-03-27)
A [auth H],
C [auth A]
Heavy ChainIGHV1 --SAbDab (2026-03-27)