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0ACHB_HUMAN*   SwissProt (?) | Description Local Annotation Link Reference
General Information
NameCHRNB1
DescriptionAcetylcholine receptor protein, beta subunit precursor.
SpeciesHomo sapiens (NCBI taxonomy ID: 9606)
GO0005887 integral to plasma membrane (TAS)
0015464 acetylcholine receptor activity (TAS)
0015267 channel or pore class transporter activity (TAS)
0006812 cation transport (TAS)
0006936 muscle contraction (TAS)
0007165 signal transduction (TAS)
0007268 synaptic transmission (TAS)
0007271 synaptic transmission, cholinergic (TAS)

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schematic display of those terms with internal associations, click the node and browse the corresponding GO term
Domain Architecture (Details)
InterPro domains assigned to SynO:
Neurotransmitter ligand-gated ion channels are transmembrane receptor-ion channel complexes that open transiently upon binding of specific ligands.llowing rapid transmission of signals at chemical synapses .Of the five families known.our have been shown to form a sequence-related superfamily. These are the gamma-aminobutyric acid type A (GABA-A).icotinic acetylcholine.lycine and the serotonin 5HT3 receptors. The ionotropic glutamate receptors () have a distinct primary structure.However.ll these receptors possess a pentameric structure (made up of varying subunits).urrounding a central pore. Each of these subunits contains a large extracellular N-terminal ligand-binding region; 3 hydrophobic transmembrane domains; a large intracellular region; and a fourth hydrophobic domain .This domain represents four transmembrane helices of a variety of neurotransmitter-gated ion-channels.
  IPR006029:Neurotransmitter-gated ion-channel transmembrane region
Neurotransmitter ligand-gated ion channels are transmembrane receptor-ion channel complexes that open transiently upon binding of specific ligands.llowing rapid transmission of signals at chemical synapses .Of the five families known.our have been shown to form a sequence-related superfamily. These are the gamma-aminobutyric acid type A (GABA-A).icotinic acetylcholine.lycine and the serotonin 5HT3 receptors. The ionotropic glutamate receptors () have a distinct primary structure.However.ll these receptors possess a pentameric structure (made up of varying subunits).urrounding a central pore. Each of these subunits contains a large extracellular N-terminal ligand-binding region; 3 hydrophobic transmembrane domains; a large intracellular region; and a fourth hydrophobic domain .This InterPro entry represents the GABA-A.icotinic.lycine.nd 5HT3 receptors.
  IPR006201:Neurotransmitter-gated ion-channel
InterPro domains unassigned to SynO:
Neurotransmitter ligand-gated ion channels are transmembrane receptor-ion channel complexes that open transiently upon binding of specific ligands.llowing rapid transmission of signals at chemical synapses .Of the five families known.our have been shown to form a sequence-related superfamily. These are the gamma-aminobutyric acid type A (GABA-A).icotinic acetylcholine.lycine and the serotonin 5HT3 receptors. The ionotropic glutamate receptors () have a distinct primary structure.However.ll these receptors possess a pentameric structure (made up of varying subunits).urrounding a central pore. Each of these subunits contains a large extracellular N-terminal ligand-binding region; 3 hydrophobic transmembrane domains; a large intracellular region; and a fourth hydrophobic domain .Nicotinic acetylcholine receptors are ligand-gated ion channels that mediate signaltransduction at the post-synaptic membrane of cholinergic synapses.uch asthe neuromuscular junction . They belong to a family of neurotransmitter-gated receptors.ncluding glycine.amma-aminobutyric-acid (GABA).erotonin 5HT3 receptors. These are oligomeric transmembrane(TM) complexes (pentamers of 2 alpha and 1 beta. gamma and 1 deltasubunit) that contain a central channel.hich transiently opens upon binding of a specific neurotransmitters. Their sequences are related and share the same topology: each hasan extracellular.lycosylated N-terminal ligand-binding domain; 3 hydrophobic TM regions.hich form the channel; a hydrophilic cytoplasmicdomain; followed by a fourth putative TM region . The nicotinic receptor ligand binding domain is a specialized pocket of aromatic and hydrophobic residues formed at interfaces between protein subunits that changes conformation to convert agonist binding into gating of an intrinsic ion channel . The expression of acetylcholine receptors is activated during muscledifferentiation and upon denervation of adult muscle . Receptor functionis regulated by phosphorylation and dephosphorylation by kinases andphosphatases present in the post-synaptic membranes . Most of thephosphorylation sites are located in the major intracellular loop betweenthe third and fourth TM regions and are closely spaced.
  IPR002394:Nicotinic acetylcholine receptor
Neurotransmitter ligand-gated ion channels are transmembrane receptor-ion channel complexes that open transiently upon binding of specific ligands.llowing rapid transmission of signals at chemical synapses .Of the five families known.our have been shown to form a sequence-related superfamily. These are the gamma-aminobutyric acid type A (GABA-A).icotinic acetylcholine.lycine and the serotonin 5HT3 receptors. The ionotropic glutamate receptors () have a distinct primary structure.However.ll these receptors possess a pentameric structure (made up of varying subunits).urrounding a central pore. Each of these subunits contains a large extracellular N-terminal ligand-binding region; 3 hydrophobic transmembrane domains; a large intracellular region; and a fourth hydrophobic domain .This entry presents the extracellular ligand binding domain of these ion channels. This domain forms a pentameric arrangement in the known structure.
  IPR006202:Neurotransmitter-gated ion-channel ligand-binding
IPR006029:Neur_chan_memb 
Evalue:-105.283996582031 
Location:252-487IPR006202:Neur_chan_LBD 
Evalue:-97.0555191040039 
Location:27-245
SequencesProtein: ACHB_HUMAN (501 aa)
mRNA: NM_000747
Local Annotation
Synapse Ontology
all
sdb:0004 Presynaptic compartment  (Evidence:keywords,domains)
Postsynaptic compartment is represented by a patch of plasma membrane containing a packed array of neurotransmitter receptors and by an underlying dense matrix, the postsynaptic density (PSD).
sdb:0005 Postsynaptic compartment  (Evidence:keywords,domains)
this kind of receptor usually locates at the postsynaptic plasma membranous region.
sdb:0109 ionotropic receptor  (Evidence:keywords,domains)
priming for exocytosis prepares the calcium-dependent release and may involve partial fusion process. The vesicles are primed and become responsive to calcium.
sdb:0120 priming  (Evidence:keywords,domains)
?
sdb:0305 binding to postsynaptic receptor and internization  (Evidence:keywords,domains)
KO assignmentK04812
  Level 3 annotation:
    cholinergic receptor, nicotinic, beta polypeptide 1 (muscle)
  Level 2 annotation:
    Ion channels
Loci Structure (Details)Loci index, Chromosomal location, Length, Possible relational loci clusterExon1: 34 residues, 7289129-7289228Exon2: 48 residues, 7289312-7289452Exon3: 17 residues, 7290111-7290156Exon4: 38 residues, 7290875-7290985Exon5: 38 residues, 7291085-7291194Exon6: 51 residues, 7291545-7291693Exon7: 72 residues, 7292621-7292831Exon8: 76 residues, 7298339-7298563Exon9: 59 residues, 7299326-7299499Exon10: 51 residues, 7299836-7299984Exon11: 345 residues, 7300625-7301655Exon12: 2 residues, -Jump to ACHB_HUMAN  
Tune and view alternative isoforms
Loci Cluster (Details)Loci: 4258 6644024-6675784 ~-32K 14997(TEKT1)(-)Loci: 4259 7033935-7063745 ~-30K 15014(DLG4)(-)Loci: 2974 7063876-7069308 ~-5K 15016(ACADVL)(+)Loci: 4260 7084462-7086477 ~-2K 15021(GABARAP)(-)Loci: 2975 7252225-7263903 ~-12K 15047(NLGN2)(+)Loci: 2976 7289129-7301655 ~-13K 15051(CHRNB1)(+)Loci: 2977 7427889-7432228 ~-4K 15066(MPDU1)(+)Loci: 2978 7474184-7477419 ~-3K 15071(SHBG)(+)Loci: 4261 7512446-7531642 ~-19K 15074(TP53)(-)Loci: 4262 7774391-7775983 ~-2K 15094(TRAPPC1)(-)Loci: 2979 7846716-7864382 ~-18K 15097(GUCY2D)(+)Loci: 4263 8004447-8006987 ~-3K 15108(VAMP2)(-)Loci: 2980 8093361-8114528 ~-21K 15119(PFAS)(+)Loci: 2981 8279988-8330396 ~-50K 15135(+)Loci: 2973 6620295-6631688 ~-11K 14996(FBXO39)(+)Link out to UCSC