1CEK

THREE-DIMENSIONAL STRUCTURE OF THE MEMBRANE-EMBEDDED M2 CHANNEL-LINING SEGMENT FROM THE NICOTINIC ACETYLCHOLINE RECEPTOR BY SOLID-STATE NMR SPECTROSCOPY

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1ceka_	Peptides	Transmembrane helical fragments	Transmembrane helical fragments	Transmembrane helical fragments	Membrane spanning segment 2 (M2) of the acetylcholine receptor	Norway rat (Rattus norvegicus ) [TaxId: 10116 ],	SCOPe (2.08)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF02932	Neurotransmitter-gated ion-channel transmembrane region (Neur_chan_memb)	Neurotransmitter-gated ion-channel transmembrane region	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	PROTEIN (ACETYLCHOLINE RECEPTOR M2)	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 cation binding acetylcholine binding ion binding binding small molecule binding 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 cation binding acetylcholine binding ion binding binding small molecule binding transmitter-gated monoatomic ion channel activity molecular transducer activity transmitter-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential signaling receptor activity neurotransmitter receptor activity extracellular ligand-gated monoatomic ion channel activity postsynaptic neurotransmitter receptor activity neurotransmitter receptor activity involved in regulation of postsynaptic membrane potential transmitter-gated channel activity monoatomic cation transmembrane transporter activity acetylcholine-gated monoatomic cation-selective channel activity ligand-gated monoatomic cation channel activity excitatory extracellular ligand-gated monoatomic ion channel activity monoatomic cation channel activity transmembrane signaling receptor activity	biological regulation regulation of biological quality regulation of membrane potential multicellular organismal movement musculoskeletal movement multicellular organismal process system process nervous system process neuromuscular process skeletal muscle contraction muscle contraction muscle system process striated muscle contraction developmental process biological regulation regulation of biological quality regulation of membrane potential multicellular organismal movement musculoskeletal movement multicellular organismal process system process nervous system process neuromuscular process skeletal muscle contraction muscle contraction muscle system process striated muscle contraction developmental process developmental growth skeletal muscle tissue development animal organ development growth tissue development muscle structure development skeletal muscle organ development skeletal muscle tissue growth anatomical structure development muscle tissue development muscle organ development localization transport monoatomic ion transport monoatomic cation transport establishment of localization	neuromuscular junction synapse cell junction cellular anatomical entity protein-containing complex plasma membrane protein complex membrane plasma membrane membrane protein complex transporter complex receptor complex cell periphery acetylcholine-gated channel complex transmembrane transporter complex neuromuscular junction synapse cell junction cellular anatomical entity protein-containing complex plasma membrane protein complex membrane plasma membrane membrane protein complex transporter complex receptor complex cell periphery acetylcholine-gated channel complex transmembrane transporter complex plasma membrane signaling receptor complex monoatomic ion channel complex postsynaptic specialization membrane postsynaptic specialization synaptic membrane postsynapse organelle postsynaptic membrane plasma membrane region cell projection neuron projection plasma membrane bounded cell projection

InterPro: Protein Family Classification InterPro Database Homepage

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

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 R01GM133198.