Annotations: 8C21

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D	PF02932	Neurotransmitter-gated ion-channel transmembrane region (Neur_chan_memb)	Neurotransmitter-gated ion-channel transmembrane region	-	Family
A, B, C, D	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, B, C, D	5-hydroxytryptamine receptor 3A	cation binding binding ion binding serotonin binding organic cyclic compound binding amine binding heterocyclic compound binding small molecule binding ligand-gated channel activity ligand-gated monoatomic ion channel activity passive transmembrane transporter activity gated channel activity ligand-gated monoatomic ion channel activity involved in regulation of presynaptic membrane potential monoatomic ion channel activity cation binding binding ion binding serotonin binding organic cyclic compound binding amine binding heterocyclic compound binding small molecule binding ligand-gated channel activity ligand-gated monoatomic ion channel activity passive transmembrane transporter activity gated channel activity ligand-gated monoatomic ion channel activity involved in regulation of presynaptic membrane potential monoatomic ion channel activity channel activity monoatomic ion transmembrane transporter activity transporter activity transmembrane transporter activity excitatory extracellular ligand-gated monoatomic ion channel activity extracellular ligand-gated monoatomic ion channel activity transmitter-gated monoatomic ion channel activity monoatomic cation transmembrane transporter activity molecular transducer activity serotonin-gated monoatomic cation channel activity signaling receptor activity neurotransmitter receptor activity monoatomic cation channel activity serotonin receptor activity transmembrane signaling receptor activity transmitter-gated channel activity ligand-gated monoatomic cation channel activity transmitter-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential postsynaptic neurotransmitter receptor activity neurotransmitter receptor activity involved in regulation of postsynaptic membrane potential identical protein binding protein binding	transmembrane transport localization transport cellular process inorganic ion transmembrane transport establishment of localization inorganic cation transmembrane transport cellular response to nitrogen compound cellular response to stimulus response to dopamine regulation of cellular process response to stimulus signaling cellular response to dopamine transmembrane transport localization transport cellular process inorganic ion transmembrane transport establishment of localization inorganic cation transmembrane transport cellular response to nitrogen compound cellular response to stimulus response to dopamine regulation of cellular process response to stimulus signaling cellular response to dopamine response to monoamine cell communication response to catecholamine cellular response to catecholamine stimulus signal transduction response to organic cyclic compound regulation of biological process serotonin receptor signaling pathway cellular response to organic cyclic compound biological regulation response to oxygen-containing compound response to nitrogen compound cellular response to oxygen-containing compound cellular response to chemical stimulus cellular response to monoamine stimulus response to chemical	cell periphery postsynapse postsynaptic membrane synapse cell junction membrane plasma membrane plasma membrane region cellular anatomical entity synaptic membrane presynapse presynaptic membrane cell division site cleavage furrow cell periphery postsynapse postsynaptic membrane synapse cell junction membrane plasma membrane plasma membrane region cellular anatomical entity synaptic membrane presynapse presynaptic membrane cell division site cleavage furrow glutamatergic synapse cell projection neuron projection plasma membrane bounded cell projection protein-containing complex transmembrane transporter complex membrane protein complex transporter complex somatodendritic compartment cell body neuronal cell body axon serotonin-activated cation-selective channel complex plasma membrane protein complex cation channel complex receptor complex neurotransmitter receptor complex plasma membrane signaling receptor complex serotonin receptor complex monoatomic ion channel complex

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D	IPR006202	Neurotransmitter-gated ion-channel ligand-binding domain	Domain
A, B, C, D	IPR036719	Neurotransmitter-gated ion-channel transmembrane domain superfamily	Homologous Superfamily
A, B, C, D	IPR049944	5-hydroxytryptamine 3 receptor, transmembrane domain	Domain
A, B, C, D	IPR006029	Neurotransmitter-gated ion-channel transmembrane domain	Domain
A, B, C, D	IPR036734	Neurotransmitter-gated ion-channel ligand-binding domain superfamily	Homologous Superfamily
A, B, C, D	IPR018000	Neurotransmitter-gated ion-channel, conserved site	Conserved Site
A, B, C, D	IPR038050	Neuronal acetylcholine receptor	Homologous Superfamily
A, B, C, D	IPR008133	5-hydroxytryptamine 3 receptor, A subunit	Family
A, B, C, D	IPR008132	5-hydroxytryptamine 3 receptor	Family
A, B, C, D	IPR006201	Neurotransmitter-gated ion-channel	Family

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

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

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.