5ESZ | pdb_00005esz

Crystal Structure of Broadly Neutralizing Antibody CH04, Isolated from Donor CH0219, in Complex with Scaffolded Trimeric HIV-1 Env V1V2 Domain from the Clade AE Strain A244

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
IMGT Antibody Annotation
SAbDab Antibody Annotation
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
F [auth B]	SCOP2B Superfamily	Immunoglobulin (Ig) domain-like	8091527	3000071	SCOP2B (2022-06-29)
B [auth L]	SCOP2B Superfamily	Immunoglobulin (Ig) domain-like	8091527	3000071	SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
D [auth G]	SPRY	e5eszG1	A: a/b three-layered sandwiches	X: Type II ABC importer transmembrane domain fold	H: Type II ABC importer transmembrane domain fold	T: Type II ABC importer transmembrane domain fold	F: SPRY	ECOD (v294.1)
C	Tor_FN3_2nd	e5eszC1	A: a/b three-layered sandwiches	X: Carbon-nitrogen hydrolase-like	H: HTH	T: winged helix domain	F: Tor_FN3_2nd	ECOD (v294.1)
F [auth B]	Tor_FN3_2nd	e5eszB1	A: a/b three-layered sandwiches	X: Carbon-nitrogen hydrolase-like	H: HTH	T: winged helix domain	F: Tor_FN3_2nd	ECOD (v294.1)
B [auth L]	Tor_FN3_2nd	e5eszL1	A: a/b three-layered sandwiches	X: Carbon-nitrogen hydrolase-like	H: HTH	T: winged helix domain	F: Tor_FN3_2nd	ECOD (v294.1)
E [auth A]	Tor_FN3_2nd	e5eszA2	A: a/b three-layered sandwiches	X: Carbon-nitrogen hydrolase-like	H: HTH	T: winged helix domain	F: Tor_FN3_2nd	ECOD (v294.1)
E [auth A]	NTP_transferase	e5eszA3	A: a/b three-layered sandwiches	X: Lipocalins/Streptavidin	H: SAM/DNA-glycosylase	T: SAM domain-like	F: NTP_transferase	ECOD (v294.1)
A [auth H]	Tor_FN3_2nd	e5eszH1	A: a/b three-layered sandwiches	X: Carbon-nitrogen hydrolase-like	H: HTH	T: winged helix domain	F: Tor_FN3_2nd	ECOD (v294.1)
A [auth H]	NTP_transferase	e5eszH2	A: a/b three-layered sandwiches	X: Lipocalins/Streptavidin	H: SAM/DNA-glycosylase	T: SAM domain-like	F: NTP_transferase	ECOD (v294.1)

IMGT Antibody Annotation IMGT Database Homepage

Chain	Protein Name	Description	Organism Name	Gene Allele Name(s)	Domain Name(s)	Receptor Type	Receptor Description	Provenance Source
B [auth L], F [auth B]	CH04 mAb, anti-gp120 [HIV-1], neutralizing	L-KAPPA	Homo sapiens (human)	IGKV3-2001, IGKJ201, IGKC*01	V-DOMAIN V-KAPPA, C-DOMAIN C-KAPPA	IG	FAB-GAMMA-1_KAPPA	IMGT (202612-0)
A [auth H], E [auth A]	CH04 mAb, anti-gp120 [HIV-1], neutralizing	VH-CH1	Homo sapiens (human)	IGHV3-2001, IGHJ201, IGHG101, IGHG102, IGHG104, IGHG105	V-DOMAIN VH, C-DOMAIN CH1	IG	FAB-GAMMA-1_KAPPA	IMGT (202612-0)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
B [auth L], F [auth B]	Light Chain	IGKV3	Kappa	2-c-methyl-d-erythritol 2,4-cyclodiphosphate synthase,envelope glycoprotein gp160	SAbDab (2026-03-27)
A [auth H], E [auth A]	Heavy Chain	IGHV3	-	2-c-methyl-d-erythritol 2,4-cyclodiphosphate synthase,envelope glycoprotein gp160	SAbDab (2026-03-27)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
C, D [auth G]	PF02542	YgbB family (YgbB)	YgbB family	-	Family
B [auth L], F [auth B]	PF07654	Immunoglobulin C1-set domain (C1-set)	Immunoglobulin C1-set domain		Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
C, D [auth G]	2-C-methyl-D-erythritol 2,4-cyclodiphosphate synthase,Envelope glycoprotein gp160	cation binding ion binding binding metal ion binding small molecule binding phosphorus-oxygen lyase activity 2-C-methyl-D-erythritol 2,4-cyclodiphosphate synthase activity lyase activity catalytic activity structural molecule activity	isoprenoid biosynthetic process isopentenyl diphosphate biosynthetic process, methylerythritol 4-phosphate pathway isopentenyl diphosphate biosynthetic process lipid biosynthetic process carbohydrate derivative metabolic process primary metabolic process glyceraldehyde-3-phosphate metabolic process phospholipid biosynthetic process aldehyde metabolic process phospholipid metabolic process biosynthetic process organophosphate metabolic process organophosphate biosynthetic process phosphate-containing compound metabolic process isoprenoid biosynthetic process isopentenyl diphosphate biosynthetic process, methylerythritol 4-phosphate pathway isopentenyl diphosphate biosynthetic process lipid biosynthetic process carbohydrate derivative metabolic process primary metabolic process glyceraldehyde-3-phosphate metabolic process phospholipid biosynthetic process aldehyde metabolic process phospholipid metabolic process biosynthetic process organophosphate metabolic process organophosphate biosynthetic process phosphate-containing compound metabolic process metabolic process cellular process phosphorus metabolic process lipid metabolic process isoprenoid metabolic process isopentenyl diphosphate metabolic process terpenoid biosynthetic process terpenoid metabolic process viral process fusion of virus membrane with host endosome membrane membrane fusion involved in viral entry into host cell membrane organization cellular component organization membrane fusion fusion of virus membrane with host plasma membrane cellular component organization or biogenesis regulation of localization regulation of biological process cellular localization regulation of cellular process regulation of protein localization positive regulation of receptor clustering biological regulation positive regulation of biological process positive regulation of protein localization to membrane localization within membrane protein localization to membrane localization regulation of cellular localization macromolecule localization receptor clustering positive regulation of protein localization intracellular protein localization regulation of receptor clustering regulation of protein localization to membrane positive regulation of cellular process 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 plasma membrane raft distribution regulation of cellular component organization positive regulation of cellular component organization plasma membrane raft polarization plasma membrane organization membrane raft organization endomembrane system organization membrane raft distribution plasma membrane raft localization membrane raft polarization regulation of plasma membrane raft polarization membrane raft localization regulation of plasma membrane organization positive regulation of plasma membrane raft polarization import into cell receptor-mediated endocytosis of virus by host cell transport establishment of localization vesicle-mediated transport symbiont entry into host cell clathrin-dependent endocytosis symbiont entry into host clathrin-dependent endocytosis of virus by host cell receptor-mediated endocytosis endocytosis endocytosis involved in viral entry into host cell viral gene expression viral protein processing symbiont-mediated perturbation of host defense response symbiont-mediated perturbation of host process modulation of process of another organism	cellular anatomical structure membrane virion component virion membrane host intracellular membrane-bounded organelle host cellular component host intracellular part host cell membrane other organism part host cell cytoplasm part host intracellular organelle host cell endosome membrane host cell cytoplasm host cell part cellular anatomical structure membrane virion component virion membrane host intracellular membrane-bounded organelle host cellular component host intracellular part host cell membrane other organism part host cell cytoplasm part host intracellular organelle host cell endosome membrane host cell cytoplasm host cell part host cell endosome host intracellular region viral membrane viral envelope host cell plasma membrane
B [auth L], F [auth B]	CH04 Light Chain	binding antigen binding	adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains lymphocyte mediated immunity response to stimulus immune response immune system process B cell mediated immunity leukocyte mediated immunity immunoglobulin mediated immune response adaptive immune response immune effector process cellular response to stimulus immune response-regulating cell surface receptor signaling pathway regulation of cellular process signaling adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains lymphocyte mediated immunity response to stimulus immune response immune system process B cell mediated immunity leukocyte mediated immunity immunoglobulin mediated immune response adaptive immune response immune effector process cellular response to stimulus immune response-regulating cell surface receptor signaling pathway regulation of cellular process signaling positive regulation of biological process cell communication positive regulation of response to stimulus immune response-activating signaling pathway immune response-regulating signaling pathway positive regulation of immune response regulation of immune system process signal transduction positive regulation of immune system process regulation of biological process cell surface receptor signaling pathway immune response-activating cell surface receptor signaling pathway B cell receptor signaling pathway biological regulation regulation of response to stimulus regulation of immune response cellular process antigen receptor-mediated signaling pathway activation of immune response	protein-containing complex IgA immunoglobulin complex immunoglobulin complex cellular anatomical structure extracellular region blood microparticle IgM immunoglobulin complex IgE immunoglobulin complex IgD immunoglobulin complex extracellular exosome membrane-bounded organelle extracellular vesicle extracellular organelle organelle protein-containing complex IgA immunoglobulin complex immunoglobulin complex cellular anatomical structure extracellular region blood microparticle IgM immunoglobulin complex IgE immunoglobulin complex IgD immunoglobulin complex extracellular exosome membrane-bounded organelle extracellular vesicle extracellular organelle organelle vesicle extracellular membrane-bounded organelle cell periphery plasma membrane membrane IgG immunoglobulin complex
A [auth H], E [auth A]	CH04 Heavy Chain	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
C, D [auth G]	IPR036571	2-C-methyl-D-erythritol 2,4-cyclodiphosphate synthase superfamily	Homologous Superfamily
C, D [auth G]	IPR003526	2-C-methyl-D-erythritol 2,4-cyclodiphosphate synthase	Domain
C, D [auth G]	IPR020555	2-C-methyl-D-erythritol 2,4-cyclodiphosphate synthase, conserved site	Conserved Site
C, D [auth G]	IPR000777	Human immunodeficiency virus 1, envelope glycoprotein Gp120	Domain
C, D [auth G]	IPR036377	Gp120 core superfamily	Homologous Superfamily
C, D [auth G]	IPR000328	Retroviral envelope protein GP41-like	Domain
C, D [auth G]	IPR037527	Envelope glycoprotein Gp160	Family
B [auth L], F [auth B]	IPR036179	Immunoglobulin-like domain superfamily	Homologous Superfamily
B [auth L], F [auth B]	IPR050380	Immune Recognition and Response Modulators	Family
B [auth L], F [auth B]	IPR003597	Immunoglobulin C1-set	Domain
B [auth L], F [auth B]	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
B [auth L], F [auth B]	IPR007110	Immunoglobulin-like domain	Domain
B [auth L], F [auth B]	IPR003006	Immunoglobulin/major histocompatibility complex, conserved site	Conserved Site

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
B [auth L], F [auth B]	Pharos: P01834	recurrent infections associated with rare immunoglobulin isotypes deficiency myositis dysgammaglobulinemia Hepatomegaly acquired idiopathic inflammatory myopathy selective IgG immunodeficiency

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.