6PV7 | pdb_00006pv7

Human alpha3beta4 nicotinic acetylcholine receptor in complex with nicotine

External Resource: Annotation

Domain Annotation: ECOD Classification
Domain Annotation: CATH
IMGT Antibody Annotation
SAbDab Antibody Annotation
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations
Membrane Protein Annotation: OPM
Membrane Protein Annotation: PDBTM
Membrane Protein Annotation: MemProtMD
Membrane Protein Annotation: mpstruc

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	MAM33	e6pv7A1	A: alpha bundles	X: P-loop domains-like	H: Hemagglutinin HA2 chain	T: Hemagglutinin HA2 chain	F: MAM33	ECOD (develop294)
D	EBV-NA1	e6pv7D1	A: alpha bundles	X: P-loop domains-like	H: DUF1107-like	T: DUF1107-like	F: EBV-NA1	ECOD (develop294)
B	MAM33	e6pv7B1	A: alpha bundles	X: P-loop domains-like	H: Hemagglutinin HA2 chain	T: Hemagglutinin HA2 chain	F: MAM33	ECOD (develop294)
C	EBV-NA1	e6pv7C1	A: alpha bundles	X: P-loop domains-like	H: DUF1107-like	T: DUF1107-like	F: EBV-NA1	ECOD (develop294)
E	EBV-NA1	e6pv7E1	A: alpha bundles	X: P-loop domains-like	H: DUF1107-like	T: DUF1107-like	F: EBV-NA1	ECOD (develop294)
F	MAM33	e6pv7F1	A: alpha bundles	X: P-loop domains-like	H: Hemagglutinin HA2 chain	T: Hemagglutinin HA2 chain	F: MAM33	ECOD (develop294)
H	EBV-NA1	e6pv7H1	A: alpha bundles	X: P-loop domains-like	H: DUF1107-like	T: DUF1107-like	F: EBV-NA1	ECOD (develop294)
G	MAM33	e6pv7G1	A: alpha bundles	X: P-loop domains-like	H: Hemagglutinin HA2 chain	T: Hemagglutinin HA2 chain	F: MAM33	ECOD (develop294)
I	EBV-NA1	e6pv7I1	A: alpha bundles	X: P-loop domains-like	H: DUF1107-like	T: DUF1107-like	F: EBV-NA1	ECOD (develop294)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.70.170.10	Mainly Beta	Distorted Sandwich	Acetylcholine Binding Protein	Chain: A,	CATH (utative)
D	2.70.170.10	Mainly Beta	Distorted Sandwich	Acetylcholine Binding Protein	Chain: A,	CATH (utative)
B	2.70.170.10	Mainly Beta	Distorted Sandwich	Acetylcholine Binding Protein	Chain: A,	CATH (utative)
C	2.70.170.10	Mainly Beta	Distorted Sandwich	Acetylcholine Binding Protein	Chain: A,	CATH (utative)
E	2.70.170.10	Mainly Beta	Distorted Sandwich	Acetylcholine Binding Protein	Chain: A,	CATH (utative)

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
F, H	Antibody Fab Fragment	VH-CH1	Mus musculus (house mouse)	IGHV1S13701, IGHJ401, IGHG2B*02	V-DOMAIN VH, C-DOMAIN CH1	IG	FAB-GAMMA-2B_KAPPA	IMGT (202610-0)
G, I	Antibody Fab Fragment	L-KAPPA	Mus musculus (house mouse)	IGKV4-5901, IGKJ501, IGKC01, IGKC02	V-DOMAIN V-KAPPA, C-DOMAIN C-KAPPA	IG	FAB-GAMMA-2B_KAPPA	IMGT (202610-0)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
F, H	Heavy Chain	IGHV1	-	fusion protein of neuronal acetylcholine receptor subunitalpha-3 and soluble cytochrome b562 \| fusion protein of neuronal acetylcholine receptor subunitbeta-4 and soluble cytochrome b562	SAbDab (2026-03-20)
G, I	Light Chain	IGKV4	Kappa	fusion protein of neuronal acetylcholine receptor subunitalpha-3 and soluble cytochrome b562 \| fusion protein of neuronal acetylcholine receptor subunitbeta-4 and soluble cytochrome b562	SAbDab (2026-03-20)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, D	PF02932	Neurotransmitter-gated ion-channel transmembrane region (Neur_chan_memb)	Neurotransmitter-gated ion-channel transmembrane region	-	Family
A, D	PF02931	Neurotransmitter-gated ion-channel ligand binding domain (Neur_chan_LBD)	Neurotransmitter-gated ion-channel ligand binding domain	-	Family
B, C, E	PF02932	Neurotransmitter-gated ion-channel transmembrane region (Neur_chan_memb)	Neurotransmitter-gated ion-channel transmembrane region	-	Family
B, C, E	PF02931	Neurotransmitter-gated ion-channel ligand binding domain (Neur_chan_LBD)	Neurotransmitter-gated ion-channel ligand binding domain	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, D	Fusion protein of Neuronal acetylcholine receptor subunit alpha-3 and Soluble cytochrome b562	ligand-gated channel activity ligand-gated monoatomic ion channel activity passive transmembrane transporter activity gated channel activity monoatomic ion channel activity channel activity monoatomic ion transmembrane transporter activity transporter activity transmembrane transporter activity neurotransmitter receptor activity postsynaptic neurotransmitter receptor activity molecular transducer activity signaling receptor activity transmembrane signaling receptor activity ligand-gated channel activity ligand-gated monoatomic ion channel activity passive transmembrane transporter activity gated channel activity monoatomic ion channel activity channel activity monoatomic ion transmembrane transporter activity transporter activity transmembrane transporter activity neurotransmitter receptor activity postsynaptic neurotransmitter receptor activity molecular transducer activity signaling receptor activity transmembrane signaling receptor activity acetylcholine receptor activity cation binding acetylcholine binding ion binding binding small molecule binding transmitter-gated monoatomic ion channel activity monoatomic cation transmembrane transporter activity transmitter-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential excitatory extracellular ligand-gated monoatomic ion channel activity extracellular ligand-gated monoatomic ion channel activity monoatomic cation channel activity acetylcholine-gated monoatomic cation-selective channel activity transmitter-gated channel activity ligand-gated monoatomic cation channel activity	trans-synaptic signaling regulation of biological process regulation of signaling regulation of cellular process modulation of chemical synaptic transmission signaling biological regulation cell-cell signaling presynaptic modulation of chemical synaptic transmission chemical synaptic transmission cell communication synaptic signaling regulation of trans-synaptic signaling anterograde trans-synaptic signaling trans-synaptic signaling regulation of biological process regulation of signaling regulation of cellular process modulation of chemical synaptic transmission signaling biological regulation cell-cell signaling presynaptic modulation of chemical synaptic transmission chemical synaptic transmission cell communication synaptic signaling regulation of trans-synaptic signaling anterograde trans-synaptic signaling regulation of cell communication cellular process localization transport monoatomic ion transport establishment of localization multicellular organismal process system process regulation of system process muscle contraction muscle system process regulation of muscle system process smooth muscle contraction regulation of smooth muscle contraction regulation of muscle contraction regulation of multicellular organismal process neuromuscular synaptic transmission regulation of biological quality regulation of membrane potential developmental process multicellular organism development anatomical structure development nervous system development system development regulation of localization cellular localization nitrogen compound transport regulation of secretion by cell secretion by cell signal release acetylcholine secretion, neurotransmission establishment of localization in cell acetylcholine secretion neurotransmitter secretion regulation of transport secretion regulation of neurotransmitter transport export from cell regulation of acetylcholine secretion, neurotransmission neurotransmitter transport organic cation transport acetate ester transport regulation of secretion amine transport signal release from synapse acetylcholine transport regulation of neurotransmitter secretion synaptic transmission, cholinergic regulation of amine transport regulation of synaptic transmission, cholinergic cellular response to nitrogen compound cellular response to stimulus cellular response to acetylcholine response to stimulus response to oxygen-containing compound response to nitrogen compound acetylcholine receptor signaling pathway postsynaptic signal transduction cellular response to oxygen-containing compound cellular response to chemical stimulus response to chemical response to acetylcholine signal transduction excretion micturition renal system process synaptic transmission involved in micturition behavior locomotory behavior transmembrane transport monoatomic ion transmembrane transport regulation of postsynaptic membrane potential chemical synaptic transmission, postsynaptic cell surface receptor signaling pathway nervous system process excitatory postsynaptic potential regulation of neuron projection development regulation of cellular component organization regulation of developmental process cellular developmental process cell projection organization plasma membrane bounded cell projection morphogenesis cell development neuron projection development cell morphogenesis cellular component organization neurogenesis cell projection morphogenesis neuron differentiation dendrite development neuron projection morphogenesis regulation of dendrite morphogenesis cell differentiation cellular component organization or biogenesis regulation of anatomical structure morphogenesis plasma membrane bounded cell projection organization regulation of cell projection organization dendrite morphogenesis cell morphogenesis involved in neuron differentiation generation of neurons anatomical structure morphogenesis regulation of dendrite development neuron development regulation of plasma membrane bounded cell projection organization membrane depolarization adult behavior response to nicotine behavioral response to nicotine	cell periphery postsynapse cellular anatomical structure postsynaptic membrane synapse cell junction membrane plasma membrane plasma membrane region synaptic membrane membrane-bounded organelle intracellular anatomical structure nucleus membrane-enclosed lumen cell periphery postsynapse cellular anatomical structure postsynaptic membrane synapse cell junction membrane plasma membrane plasma membrane region synaptic membrane membrane-bounded organelle intracellular anatomical structure nucleus membrane-enclosed lumen intracellular membraneless organelle intracellular membrane-bounded organelle intracellular organelle lumen nuclear speck ribonucleoprotein granule intracellular organelle nuclear body nucleoplasm organelle lumen organelle membraneless organelle supramolecular complex nuclear ribonucleoprotein granule nuclear lumen ciliary transition zone cell projection cilium plasma membrane bounded cell projection cytoplasm cytosol ciliary tip somatodendritic compartment dendrite dendritic tree neuron projection protein-containing complex neurotransmitter receptor complex plasma membrane protein complex plasma membrane signaling receptor complex membrane protein complex receptor complex Golgi apparatus endomembrane system cell body neuronal cell body ciliary basal body microtubule organizing center cytoskeleton microtubule cytoskeleton nucleolus presynapse transmembrane transporter complex cation channel complex transporter complex monoatomic ion channel complex acetylcholine-gated channel complex membrane microdomain membrane raft plasma membrane raft endoplasmic reticulum
B, C, E	Fusion protein of Neuronal acetylcholine receptor subunit beta-4 and Soluble cytochrome b562	ligand-gated channel activity ligand-gated monoatomic ion channel activity passive transmembrane transporter activity gated channel activity monoatomic ion channel activity channel activity monoatomic ion transmembrane transporter activity transporter activity transmembrane transporter activity neurotransmitter receptor activity postsynaptic neurotransmitter receptor activity molecular transducer activity signaling receptor activity transmembrane signaling receptor activity ligand-gated channel activity ligand-gated monoatomic ion channel activity passive transmembrane transporter activity gated channel activity monoatomic ion channel activity channel activity monoatomic ion transmembrane transporter activity transporter activity transmembrane transporter activity neurotransmitter receptor activity postsynaptic neurotransmitter receptor activity molecular transducer activity signaling receptor activity transmembrane signaling receptor activity acetylcholine receptor activity transmitter-gated monoatomic ion channel activity monoatomic cation transmembrane transporter activity transmitter-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential excitatory extracellular ligand-gated monoatomic ion channel activity extracellular ligand-gated monoatomic ion channel activity monoatomic cation channel activity acetylcholine-gated monoatomic cation-selective channel activity transmitter-gated channel activity ligand-gated monoatomic cation channel activity	behavior multicellular organismal process locomotory behavior positive regulation of cell communication regulation of biological process system process regulation of cellular process nervous system process regulation of system process biological regulation positive regulation of biological process positive regulation of transmission of nerve impulse transmission of nerve impulse regulation of nervous system process behavior multicellular organismal process locomotory behavior positive regulation of cell communication regulation of biological process system process regulation of cellular process nervous system process regulation of system process biological regulation positive regulation of biological process positive regulation of transmission of nerve impulse transmission of nerve impulse regulation of nervous system process cell communication regulation of transmission of nerve impulse positive regulation of nervous system process positive regulation of multicellular organismal process regulation of cell communication regulation of multicellular organismal process cellular process positive regulation of cellular process localization transport monoatomic ion transport establishment of localization smooth muscle contraction muscle contraction muscle system process transmembrane transport monoatomic ion transmembrane transport regulation of muscle system process regulation of smooth muscle contraction regulation of muscle contraction cellular response to stimulus response to stimulus signaling signal transduction regulation of localization cellular localization modulation of chemical synaptic transmission synaptic signaling regulation of secretion by cell secretion by cell signal release establishment of localization in cell trans-synaptic signaling regulation of signaling neurotransmitter secretion regulation of transport secretion regulation of neurotransmitter transport export from cell cell-cell signaling neurotransmitter transport regulation of secretion chemical synaptic transmission signal release from synapse regulation of trans-synaptic signaling regulation of neurotransmitter secretion anterograde trans-synaptic signaling action potential neuronal action potential regulation of biological quality regulation of membrane potential membrane depolarization adult behavior response to chemical response to nicotine behavioral response to nicotine cellular response to nitrogen compound cellular response to acetylcholine response to oxygen-containing compound response to nitrogen compound acetylcholine receptor signaling pathway postsynaptic signal transduction cellular response to oxygen-containing compound cellular response to chemical stimulus response to acetylcholine synaptic transmission, cholinergic excretion micturition renal system process synaptic transmission involved in micturition neuromuscular synaptic transmission	membrane-bounded organelle intracellular anatomical structure tertiary granule membrane membrane intracellular vesicle intracellular membrane-bounded organelle endomembrane system tertiary granule intracellular organelle cytoplasmic vesicle membrane cellular anatomical structure bounding membrane of organelle vesicle membrane cytoplasmic vesicle membrane-bounded organelle intracellular anatomical structure tertiary granule membrane membrane intracellular vesicle intracellular membrane-bounded organelle endomembrane system tertiary granule intracellular organelle cytoplasmic vesicle membrane cellular anatomical structure bounding membrane of organelle vesicle membrane cytoplasmic vesicle organelle secretory granule secretory vesicle cytoplasm vesicle organelle membrane secretory granule membrane specific granule membrane specific granule cell periphery plasma membrane postsynaptic specialization membrane postsynaptic specialization synapse synaptic membrane postsynapse postsynaptic membrane cell junction plasma membrane region cholinergic synapse cell projection neuron projection plasma membrane bounded cell projection protein-containing complex neurotransmitter receptor complex plasma membrane protein complex plasma membrane signaling receptor complex membrane protein complex receptor complex transporter complex acetylcholine-gated channel complex transmembrane transporter complex monoatomic ion channel complex
F, H	IgG2b Fab heavy chain	-	-	-
G, I	Kappa Fab light chain	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, D	IPR002394	Nicotinic acetylcholine receptor	Family
A, D	IPR036734	Neurotransmitter-gated ion-channel ligand-binding domain superfamily	Homologous Superfamily
A, D	IPR018000	Neurotransmitter-gated ion-channel, conserved site	Conserved Site
A, D	IPR038050	Neuronal acetylcholine receptor	Homologous Superfamily
A, D	IPR006202	Neurotransmitter-gated ion-channel ligand-binding domain	Domain
A, D	IPR036719	Neurotransmitter-gated ion-channel transmembrane domain superfamily	Homologous Superfamily
A, D	IPR006029	Neurotransmitter-gated ion-channel transmembrane domain	Domain
A, D	IPR006201	Neurotransmitter-gated ion-channel	Family
B, C, E	IPR006202	Neurotransmitter-gated ion-channel ligand-binding domain	Domain
B, C, E	IPR036719	Neurotransmitter-gated ion-channel transmembrane domain superfamily	Homologous Superfamily
B, C, E	IPR002394	Nicotinic acetylcholine receptor	Family
B, C, E	IPR006029	Neurotransmitter-gated ion-channel transmembrane domain	Domain
B, C, E	IPR036734	Neurotransmitter-gated ion-channel ligand-binding domain superfamily	Homologous Superfamily
B, C, E	IPR018000	Neurotransmitter-gated ion-channel, conserved site	Conserved Site
B, C, E	IPR038050	Neuronal acetylcholine receptor	Homologous Superfamily
B, C, E	IPR006201	Neurotransmitter-gated ion-channel	Family

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, D	Pharos: P32297	nicotine dependence lung carcinoma alcohol abuse visual epilepsy Generalized Absence Seizures squamous cell lung carcinoma lung adenocarcinoma abdominal aortic aneurysm malignant ependymoma medulloblastoma brain aneurysm cocaine dependence psoriasis heart disease subependymal giant cell astrocytoma nicotine dependence lung carcinoma alcohol abuse visual epilepsy Generalized Absence Seizures squamous cell lung carcinoma lung adenocarcinoma abdominal aortic aneurysm malignant ependymoma medulloblastoma brain aneurysm cocaine dependence psoriasis heart disease subependymal giant cell astrocytoma lung benign neoplasm malignant glioma autism spectrum disorder bronchitis peripheral arterial disease pulmonary edema glioblastoma hypertensive disorder small cell lung carcinoma large cell medulloblastoma lung cancer malignant colon neoplasm anorexia nervosa bipolar disorder chronic obstructive pulmonary disease pilocytic astrocytoma dental caries schizophrenia
B, C, E	Pharos: P30926	nicotine dependence substance withdrawal syndrome visual epilepsy Withdrawal Symptoms lung benign neoplasm abdominal aortic aneurysm anorexia nervosa bipolar disorder cocaine dependence heart disease lung carcinoma myocardial infarction peripheral arterial disease bronchitis small cell lung carcinoma nicotine dependence substance withdrawal syndrome visual epilepsy Withdrawal Symptoms lung benign neoplasm abdominal aortic aneurysm anorexia nervosa bipolar disorder cocaine dependence heart disease lung carcinoma myocardial infarction peripheral arterial disease bronchitis small cell lung carcinoma hypertensive disorder lung adenocarcinoma pulmonary edema autism spectrum disorder chronic obstructive pulmonary disease squamous cell lung carcinoma dental caries

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
A, B, C, D, E	OPM	Transmembrane	Alpha-helical polytopic	Pentameric ligand-gated ion channels	Ligand-gated ion channel of neurotransmitter receptors

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

Chains	External Link	Comment
A, B, C, D, E	PDBTM	Annotated as membrane protein by PDBTM

Membrane Protein Annotation: MemProtMD MemProtMD Database Homepage

Chains	External Link	Comment
A, B, C, D, E	MemProtMD	Annotated as membrane protein by MemProtMD

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
A, B, C, D, E	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	Cys-Loop Receptor Family	Nicotinic Acetylcholine α3β4 Receptor

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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