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CHRNA2
HPA
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  • CHRNA2
PROTEIN SUMMARY GENE INFORMATION RNA DATA ANTIBODY DATA
GENERAL INFORMATIONi

General description of the gene and the encoded protein(s) using information from HGNC and Ensembl, as well as predictions made by the Human Protein Atlas project.

Gene namei

Official gene symbol, which is typically a short form of the gene name, according to HGNC.

CHRNA2
Synonyms
Gene descriptioni

Full gene name according to HGNC.

Cholinergic receptor nicotinic alpha 2 subunit
Protein classi

Assigned HPA protein class(es) for the encoded protein(s).

Disease related genes
FDA approved drug targets
Human disease related genes
Predicted locationi

All transcripts of all genes have been analyzed regarding the location(s) of corresponding protein based on prediction methods for signal peptides and transmembrane regions.

  • Genes with at least one transcript predicted to encode a secreted protein, according to prediction methods or to UniProt location data, have been further annotated and classified with the aim to determine if the corresponding protein(s) are secreted or actually retained in intracellular locations or membrane-attached.

  • Remaining genes, with no transcript predicted to encode a secreted protein, will be assigned the prediction-based location(s).

The annotated location overrules the predicted location, so that a gene encoding a predicted secreted protein that has been annotated as intracellular will have intracellular as the final location.

Membrane, Intracellular
Protein evidence Evidence at protein level (all genes)
GENE INFORMATIONi

Gene information from Ensembl and Entrez, as well as links to available gene identifiers are displayed here. Information was retrieved from Ensembl if not indicated otherwise.

Chromosome 8
Cytoband p21.2
Chromosome location (bp) 27459756 - 27479883
Number of transcriptsi

Number of protein-coding transcripts from the gene as defined by Ensembl.

7
Ensembl ENSG00000120903 (version 109)
Entrez gene 1135
HGNC HGNC:1956
UniProt Q15822 (UniProt - Evidence at protein level)
neXtProt NX_Q15822
GeneCards CHRNA2
Antibodypedia CHRNA2 antibodies


PROTEIN FUNCTION
Protein function (UniProt)i

Useful information about the protein provided by UniProt.

After binding acetylcholine, the AChR responds by an extensive change in conformation that affects all subunits and leads to opening of an ion-conducting channel across the plasma membrane.... show less
Molecular function (UniProt)i

Keywords assigned by UniProt to proteins due to their particular molecular function.

Ion channel, Ligand-gated ion channel, Receptor
Biological process (UniProt)i

Keywords assigned by UniProt to proteins because they are involved in a particular biological process.

Ion transport, Transport
Gene summary (Entrez)i

Useful information about the gene from Entrez

Nicotinic acetylcholine receptors (nAChRs) are ligand-gated ion channels formed by a pentameric arrangement of alpha and beta subunits to create distinct muscle and neuronal receptors. Neuronal receptors are found throughout the peripheral and central nervous system where they are involved in fast synaptic transmission. This gene encodes an alpha subunit that is widely expressed in the brain. The proposed structure for nAChR subunits is a conserved N-terminal extracellular domain followed by three conserved transmembrane domains, a variable cytoplasmic loop, a fourth conserved transmembrane domain, and a short C-terminal extracellular region. Mutations in this gene cause autosomal dominant nocturnal frontal lobe epilepsy type 4. Single nucleotide polymorphisms (SNPs) in this gene have been associated with nicotine dependence. [provided by RefSeq, Nov 2009]... show less
PROTEIN INFORMATIONi

The protein information section displays alternative protein-coding transcripts (splice variants) encoded by this gene according to the Ensembl database.

The Splice variant identifier links to the Ensembl website protein summary for the selected splice variant. The data in the Swissprot and TrEMBL columns links to corresponding pages in the UniProt database.

The protein classes assigned to this protein are shown if expanding the data in the protein class column. Parent protein classes are in bold font and subclasses are listed under the parent class.

The length of the protein (amino acid residues according to Ensembl), molecular mass (kDalton), predicted signal peptide and number of predicted transmembrane region(s) according to in-house majority decision methods based on sets of predictors are also reported.
Splice variant SwissProt TrEMBL Protein class Gene ontology Length & mass Signal peptide
(predicted)
Transmembrane regions
(predicted)
CHRNA2-201
ENSP00000240132
ENST00000240132
Q15822
[Direct mapping] Neuronal acetylcholine receptor subunit alpha-2
Show all
Predicted membrane proteins
   Prediction method-based
   Membrane proteins predicted by MDM
   MEMSAT3 predicted membrane proteins
   MEMSAT-SVM predicted membrane proteins
   Phobius predicted membrane proteins
   SCAMPI predicted membrane proteins
   SPOCTOPUS predicted membrane proteins
   THUMBUP predicted membrane proteins
   TMHMM predicted membrane proteins
   # TM segments-based
   4TM proteins predicted by MDM
Disease related genes
FDA approved drug targets
   Small molecule drugs
Human disease related genes
   Nervous system diseases
   Epilepsy
Mapped to neXtProt
   neXtProt - Evidence at protein level
   DeepTMHMM predicted membrane proteins
Show all
GO:0004888 [transmembrane signaling receptor activity]
GO:0005216 [ion channel activity]
GO:0005230 [extracellular ligand-gated ion channel activity]
GO:0005231 [excitatory extracellular ligand-gated ion channel activity]
GO:0005654 [nucleoplasm]
GO:0005886 [plasma membrane]
GO:0005892 [acetylcholine-gated channel complex]
GO:0006811 [ion transport]
GO:0007165 [signal transduction]
GO:0007268 [chemical synaptic transmission]
GO:0007271 [synaptic transmission, cholinergic]
GO:0015464 [acetylcholine receptor activity]
GO:0016020 [membrane]
GO:0016021 [integral component of membrane]
GO:0022848 [acetylcholine-gated cation-selective channel activity]
GO:0030594 [neurotransmitter receptor activity]
GO:0034220 [ion transmembrane transport]
GO:0035094 [response to nicotine]
GO:0042391 [regulation of membrane potential]
GO:0043005 [neuron projection]
GO:0045171 [intercellular bridge]
GO:0045202 [synapse]
GO:0045211 [postsynaptic membrane]
GO:0050877 [nervous system process]
GO:0060078 [regulation of postsynaptic membrane potential]
GO:0060079 [excitatory postsynaptic potential]
GO:0110165 [cellular anatomical entity]
GO:1904315 [transmitter-gated ion channel activity involved in regulation of postsynaptic membrane potential]
Show all
514 aa
58.1 kDa
Yes 4
CHRNA2-202
ENSP00000385026
ENST00000407991
Q15822
[Direct mapping] Neuronal acetylcholine receptor subunit alpha-2
Show all
Predicted membrane proteins
   Prediction method-based
   Membrane proteins predicted by MDM
   MEMSAT3 predicted membrane proteins
   MEMSAT-SVM predicted membrane proteins
   Phobius predicted membrane proteins
   SCAMPI predicted membrane proteins
   SPOCTOPUS predicted membrane proteins
   THUMBUP predicted membrane proteins
   TMHMM predicted membrane proteins
   # TM segments-based
   4TM proteins predicted by MDM
Disease related genes
FDA approved drug targets
   Small molecule drugs
Human disease related genes
   Nervous system diseases
   Epilepsy
Mapped to neXtProt
   neXtProt - Evidence at protein level
Protein evidence (Kim et al 2014)
   DeepTMHMM predicted membrane proteins
Show all
GO:0004888 [transmembrane signaling receptor activity]
GO:0005216 [ion channel activity]
GO:0005230 [extracellular ligand-gated ion channel activity]
GO:0005231 [excitatory extracellular ligand-gated ion channel activity]
GO:0005654 [nucleoplasm]
GO:0005886 [plasma membrane]
GO:0005892 [acetylcholine-gated channel complex]
GO:0006811 [ion transport]
GO:0007165 [signal transduction]
GO:0007268 [chemical synaptic transmission]
GO:0007271 [synaptic transmission, cholinergic]
GO:0015464 [acetylcholine receptor activity]
GO:0016020 [membrane]
GO:0016021 [integral component of membrane]
GO:0022848 [acetylcholine-gated cation-selective channel activity]
GO:0030594 [neurotransmitter receptor activity]
GO:0032991 [protein-containing complex]
GO:0034220 [ion transmembrane transport]
GO:0035094 [response to nicotine]
GO:0042391 [regulation of membrane potential]
GO:0043005 [neuron projection]
GO:0045171 [intercellular bridge]
GO:0045202 [synapse]
GO:0045211 [postsynaptic membrane]
GO:0050877 [nervous system process]
GO:0050997 [quaternary ammonium group binding]
GO:0060078 [regulation of postsynaptic membrane potential]
GO:0060079 [excitatory postsynaptic potential]
GO:0071316 [cellular response to nicotine]
GO:0071944 [cell periphery]
GO:0098828 [modulation of inhibitory postsynaptic potential]
GO:0110165 [cellular anatomical entity]
GO:0120111 [neuron projection cytoplasm]
GO:1901363 [heterocyclic compound binding]
GO:1904315 [transmitter-gated ion channel activity involved in regulation of postsynaptic membrane potential]
GO:1905144 [response to acetylcholine]
Show all
529 aa
59.8 kDa
Yes 4
CHRNA2-203
ENSP00000430856
ENST00000518712
E5RHQ4
[Direct mapping] Neuronal acetylcholine receptor subunit alpha-2
Show all
   MEMSAT3 predicted membrane proteins
   Secreted proteins predicted by MDSEC
   SignalP predicted secreted proteins
   Phobius predicted secreted proteins
   SPOCTOPUS predicted secreted proteins
   DeepTMHMM predicted secreted proteins
   DeepSig predicted secreted proteins
Predicted intracellular proteins
Human disease related genes
   Nervous system diseases
   Epilepsy
Show all
81 aa
8.9 kDa
Yes 0
CHRNA2-204
ENSP00000430994
ENST00000520208
E5RGT4
[Direct mapping] Neuronal acetylcholine receptor subunit alpha-2
Show all
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
Human disease related genes
   Nervous system diseases
   Epilepsy
Show all
19 aa
2.2 kDa
No 0
CHRNA2-207
ENSP00000429616
ENST00000520933
A0A0X1KG79
[Direct mapping] Neuronal acetylcholine receptor subunit alpha-2
Show all
Predicted membrane proteins
   Prediction method-based
   Membrane proteins predicted by MDM
   MEMSAT3 predicted membrane proteins
   MEMSAT-SVM predicted membrane proteins
   Phobius predicted membrane proteins
   SCAMPI predicted membrane proteins
   SPOCTOPUS predicted membrane proteins
   THUMBUP predicted membrane proteins
   TMHMM predicted membrane proteins
   # TM segments-based
   4TM proteins predicted by MDM
Human disease related genes
   Nervous system diseases
   Epilepsy
   DeepTMHMM predicted membrane proteins
Show all
GO:0004888 [transmembrane signaling receptor activity]
GO:0005216 [ion channel activity]
GO:0005230 [extracellular ligand-gated ion channel activity]
GO:0005654 [nucleoplasm]
GO:0005886 [plasma membrane]
GO:0006811 [ion transport]
GO:0016020 [membrane]
GO:0016021 [integral component of membrane]
GO:0022848 [acetylcholine-gated cation-selective channel activity]
GO:0034220 [ion transmembrane transport]
GO:0045171 [intercellular bridge]
GO:0045202 [synapse]
GO:0045211 [postsynaptic membrane]
GO:0060078 [regulation of postsynaptic membrane potential]
GO:0060079 [excitatory postsynaptic potential]
GO:0097060 [synaptic membrane]
GO:0110165 [cellular anatomical entity]
Show all
507 aa
57.3 kDa
No 4
CHRNA2-208
ENSP00000429953
ENST00000521921
E5RGP6
[Direct mapping] Neuronal acetylcholine receptor subunit alpha-2
Show all
   Secreted proteins predicted by MDSEC
   SignalP predicted secreted proteins
   Phobius predicted secreted proteins
   SPOCTOPUS predicted secreted proteins
   DeepTMHMM predicted secreted proteins
   DeepSig predicted secreted proteins
Predicted intracellular proteins
Human disease related genes
   Nervous system diseases
   Epilepsy
Show all
50 aa
5.3 kDa
Yes 0
CHRNA2-211
ENSP00000430422
ENST00000524096
E5RK67
[Direct mapping] Neuronal acetylcholine receptor subunit alpha-2
Show all
   MEMSAT3 predicted membrane proteins
   Secreted proteins predicted by MDSEC
   SignalP predicted secreted proteins
   Phobius predicted secreted proteins
   SPOCTOPUS predicted secreted proteins
   DeepTMHMM predicted secreted proteins
   DeepSig predicted secreted proteins
Predicted intracellular proteins
Human disease related genes
   Nervous system diseases
   Epilepsy
Show all
GO:0004888 [transmembrane signaling receptor activity]
GO:0005216 [ion channel activity]
GO:0005230 [extracellular ligand-gated ion channel activity]
GO:0006811 [ion transport]
GO:0016020 [membrane]
GO:0016021 [integral component of membrane]
GO:0034220 [ion transmembrane transport]
Show all
108 aa
11.9 kDa
Yes 0

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