4U6G | pdb_00004u6g

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
D [auth B]	2OG-FeII_Oxy_4	e4u6gB1	A: a/b three-layered sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: PEBP-like	F: 2OG-FeII_Oxy_4	ECOD (v294.1)
B [auth L]	2OG-FeII_Oxy_4	e4u6gL1	A: a/b three-layered sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: PEBP-like	F: 2OG-FeII_Oxy_4	ECOD (v294.1)
C [auth A]	2OG-FeII_Oxy_4	e4u6gA1	A: a/b three-layered sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: PEBP-like	F: 2OG-FeII_Oxy_4	ECOD (v294.1)
A [auth H]	2OG-FeII_Oxy_4	e4u6gH1	A: a/b three-layered sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: PEBP-like	F: 2OG-FeII_Oxy_4	ECOD (v294.1)

Chain	Protein Name	Description	Organism Name	Gene Allele Name(s)	Domain Name(s)	Receptor Type	Receptor Description	Provenance Source
B [auth L], D [auth B]	[HIV-1], neutralizing	L-LAMBDA	Homo sapiens (human)	IGLV3-1901, IGLJ201, IGLJ302, IGLJ301, IGLC201, IGLC202, IGLC3*04	V-DOMAIN V-LAMBDA, C-DOMAIN C-LAMBDA	IG	FAB-GAMMA-1_LAMBDA	IMGT (202612-0)
A [auth H], C [auth A]	[HIV-1], neutralizing	VH-CH1	Homo sapiens (human)	IGHV3-1501, IGHV3-1504, IGHV3-1505, IGHV3-1507, IGHJ101, IGHG103	V-DOMAIN VH, C-DOMAIN CH1	IG	FAB-GAMMA-1_LAMBDA	IMGT (202612-0)

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
B [auth L], D [auth B]	Light Chain	IGLV3	Lambda	sah-mper(662-683kkk)(b,q)	SAbDab (2026-03-27)
A [auth H], C [auth A]	Heavy Chain	IGHV3	-	sah-mper(662-683kkk)(b,q)	SAbDab (2026-03-27)

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
E [auth P], F [auth C]	SAH-MPER(662-683KKK)(B,q)	structural molecule activity	viral process membrane fusion involved in viral entry into host cell virion attachment to host cell biological process involved in interspecies interaction between organisms adhesion of symbiont to host cell viral life cycle adhesion of symbiont to host biological process involved in interaction with host biological process involved in symbiotic interaction symbiont entry into host cell symbiont entry into host	virion component viral membrane viral envelope host cell plasma membrane host cellular component cellular anatomical structure host cell part host cell membrane other organism part virion membrane
B [auth L], D [auth B]	10E8 Fab Light Chain	-	-	-
A [auth H], C [auth A]	10E8 Fab Heavy Chain	-	-	-

Chains	Accession	Name	Type
E [auth P], F [auth C]	IPR000328	Retroviral envelope protein GP41-like	Domain

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.

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