5CCK | pdb_00005cck

Crystal structure of Human anti-HIV-1 broadly neutralizing antibody 3BC315 Fab


Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
A [auth H]IF-2Be5cckH1 A: a/b three-layered sandwichesX: Hsp90 co-chaperone CDC37 middle domainH: Lysozyme-likeT: Lysozyme-likeF: IF-2BECOD (v294.1)
A [auth H]EF-hand_1, EF-hand_6, EF-hand_7e5cckH2 A: a/b three-layered sandwichesX: Lipocalins/StreptavidinH: SAM/DNA-glycosylaseT: SAM domain-likeF: EF-hand_1, EF-hand_6, EF-hand_7ECOD (v294.1)
B [auth L]IF-2Be5cckL1 A: a/b three-layered sandwichesX: Hsp90 co-chaperone CDC37 middle domainH: Lysozyme-likeT: Lysozyme-likeF: IF-2BECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

ChainDomainClassArchitectureTopologyHomologyProvenance Source (Version)
A [auth H]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)

IMGT Antibody Annotation IMGT Database Homepage

ChainProtein NameDescriptionOrganism NameGene Allele Name(s)Domain Name(s)Receptor TypeReceptor DescriptionProvenance Source
A [auth H]3BC315mAb, anti-gp120-gp41 [HIV-1], broadly neutralizing VH-CH1 Homo sapiens (human) IGHV1-2*02, IGHV1-46*01, IGHV1-46*03, IGHJ2*01, IGHG1*01, IGHG1*02, IGHG1*04, IGHG1*05 V-DOMAIN VH, C-DOMAIN CH1 IG FAB-GAMMA-1_LAMBDA IMGT (202611-0)
B [auth L]3BC315mAb, anti-gp120-gp41 [HIV-1], broadly neutralizing L-LAMBDA Homo sapiens (human) IGLV2-23*02, TRAJ50*01, IGLC1*02 V-DOMAIN V-LAMBDA, C-DOMAIN C-LAMBDA IG FAB-GAMMA-1_LAMBDA IMGT (202611-0)

SAbDab Antibody Annotation SAbDab Database Homepage

ChainChain ClassChain SubclassChain TypeAntigen Name(s) Provenance Source
A [auth H]Heavy ChainIGHV1 --SAbDab (2026-03-27)
B [auth L]Light ChainIGLV2 Lambda-SAbDab (2026-03-27)