Chrna2 cholinergic receptor nicotinic alpha 2 subunit [Rattus norvegicus (Norway rat)] - Gene

Summary

Official Symbol: Chrna2provided by RGD
Official Full Name: cholinergic receptor nicotinic alpha 2 subunitprovided by RGD
Primary source: RGD:621533
See related: Ensembl:ENSRNOG00000017424 AllianceGenome:RGD:621533
Gene type: protein coding
RefSeq status: PROVISIONAL
Organism: Rattus norvegicus
Lineage: Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; Euarchontoglires; Glires; Rodentia; Myomorpha; Muroidea; Muridae; Murinae; Rattus
Also known as: ACHR
Summary: Enables acetylcholine-gated monoatomic cation-selective channel activity; heterocyclic compound binding activity; and quaternary ammonium group binding activity. Involved in cellular response to nicotine; modulation of inhibitory postsynaptic potential; and response to acetylcholine. Located in neuron projection cytoplasm. Part of protein-containing complex. Human ortholog(s) of this gene implicated in autosomal dominant nocturnal frontal lobe epilepsy 4 and benign familial infantile seizures 6. Orthologous to human CHRNA2 (cholinergic receptor nicotinic alpha 2 subunit). [provided by Alliance of Genome Resources, Apr 2025]
Expression: Biased expression in Kidney (RPKM 25.9), Thymus (RPKM 10.3) and 6 other tissues See more
Orthologs: all
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Genomic context

Location:: 15p12

Exon count:: 7

Annotation release	Status	Assembly	Chr	Location
RS_2024_02	current	GRCr8 (GCF_036323735.1)	15	NC_086033.1 (44517862..44534144)
RS_2023_06	previous assembly	mRatBN7.2 (GCF_015227675.2)	15	NC_051350.1 (40342317..40358601)
106	previous assembly	Rnor_6.0 (GCF_000001895.5)	15	NC_005114.4 (42808897..42825179)

Chromosome 15 - NC_086033.1 Genomic Context describing neighboring genes

Genomic regions, transcripts, and products

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Go to reference sequence details

Genomic Sequence:

Go to nucleotide: Graphics FASTA GenBank

Expression

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See details

Project title: A rat RNA-Seq transcriptomic BodyMap across 11 organs and 4 developmental stages
Description: 320 RNA samples isolated from 11 organs (adrenal gland, brain, heart, kidney, liver, lung, muscle, spleen, thymus, and testes or uterus) from both sexes of Fischer 344 rats across four developmental stages (2-, 6-, 21-, and 104-weeks-old)
BioProject: PRJNA238328
Publication: PMID 24510058
Analysis date: Mon Jun 6 17:44:12 2016

Bibliography

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GeneRIFs: Gene References Into Functions

What's a GeneRIF?

Results suggest that nicotine alters the normal operation of hippocampal circuits by gating inhibitory circuits through activating a non-desensitizing alpha2 nAChR subtype on a distinct population of interneurons.
Title: Alpha2 nicotine receptors function as a molecular switch to continuously excite a subset of interneurons in rat hippocampal circuits.
At least two different affinity sites for acetylcholine. Sensitivity to block of alpha4beta2 channels by dihydro-beta-erythroidine was higher than that for alpha2beta2. Current-voltage for alpha2beta2 more strongly rectified than for alpha4beta2.
Title: Rat nicotinic acetylcholine receptor alpha2beta2 channels: comparison of functional properties with alpha4beta2 channels in Xenopus oocytes.
Similar to other nAChR subunits, alpha2 mRNA expression is transiently upregulated during postnatal development and nAChRs containing alpha2 subunits could regulate GABAergic activity during a critical period of network formation.
Title: Postnatal expression of alpha2 nicotinic acetylcholine receptor subunit mRNA in developing cortex and hippocampus.

Submit: New GeneRIF Correction

General gene information

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Markers

D15Wox3 (e-PCR)
- UniSTS:118055

UniSTS:496005 (e-PCR)
- UniSTS:496005

Chrna2 (e-PCR), detects polymorphism
- UniSTS:496005

Chrna2 (e-PCR), detects polymorphism
- UniSTS:256422

Gene Ontology Provided by RGD

Function	Evidence Code	Pubs
contributes_to acetylcholine receptor activity	IBA Inferred from Biological aspect of Ancestor more info
enables acetylcholine receptor activity	IEA Inferred from Electronic Annotation more info
enables acetylcholine receptor activity	ISO Inferred from Sequence Orthology more info
enables acetylcholine-gated monoatomic cation-selective channel activity	IDA Inferred from Direct Assay more info	PubMed
enables acetylcholine-gated monoatomic cation-selective channel activity	IEA Inferred from Electronic Annotation more info
contributes_to acetylcholine-gated monoatomic cation-selective channel activity	ISO Inferred from Sequence Orthology more info
enables acetylcholine-gated monoatomic cation-selective channel activity	ISO Inferred from Sequence Orthology more info
enables extracellular ligand-gated monoatomic ion channel activity	IEA Inferred from Electronic Annotation more info
enables heterocyclic compound binding	IDA Inferred from Direct Assay more info	PubMed
contributes_to heterocyclic compound binding	IPI Inferred from Physical Interaction more info	PubMed
enables monoatomic ion channel activity	IEA Inferred from Electronic Annotation more info
enables neurotransmitter receptor activity	IBA Inferred from Biological aspect of Ancestor more info
enables postsynaptic neurotransmitter receptor activity	IEA Inferred from Electronic Annotation more info
enables quaternary ammonium group binding	IDA Inferred from Direct Assay more info	PubMed
enables quaternary ammonium group binding	IEA Inferred from Electronic Annotation more info
enables transmembrane signaling receptor activity	IEA Inferred from Electronic Annotation more info

Process	Evidence Code	Pubs
involved_in acetylcholine receptor signaling pathway	IBA Inferred from Biological aspect of Ancestor more info
involved_in acetylcholine receptor signaling pathway	IEA Inferred from Electronic Annotation more info
involved_in acetylcholine receptor signaling pathway	ISO Inferred from Sequence Orthology more info
involved_in calcium ion transport	IBA Inferred from Biological aspect of Ancestor more info
involved_in cellular response to nicotine	IDA Inferred from Direct Assay more info	PubMed
involved_in chemical synaptic transmission, postsynaptic	IEA Inferred from Electronic Annotation more info
involved_in excitatory postsynaptic potential	IEA Inferred from Electronic Annotation more info
involved_in membrane depolarization	IBA Inferred from Biological aspect of Ancestor more info
involved_in membrane depolarization	ISO Inferred from Sequence Orthology more info
involved_in modulation of inhibitory postsynaptic potential	IDA Inferred from Direct Assay more info	PubMed
involved_in monoatomic ion transmembrane transport	IBA Inferred from Biological aspect of Ancestor more info
involved_in monoatomic ion transmembrane transport	IEA Inferred from Electronic Annotation more info
involved_in monoatomic ion transport	IEA Inferred from Electronic Annotation more info
involved_in neuromuscular synaptic transmission	IBA Inferred from Biological aspect of Ancestor more info
involved_in presynaptic modulation of chemical synaptic transmission	IBA Inferred from Biological aspect of Ancestor more info
involved_in regulation of postsynaptic membrane potential	IEA Inferred from Electronic Annotation more info
acts_upstream_of_or_within regulation of synaptic plasticity	ISO Inferred from Sequence Orthology more info
involved_in response to acetylcholine	IDA Inferred from Direct Assay more info	PubMed
involved_in response to acetylcholine	IEA Inferred from Electronic Annotation more info
involved_in response to nicotine	IBA Inferred from Biological aspect of Ancestor more info
involved_in signal transduction	IEA Inferred from Electronic Annotation more info
involved_in signal transduction	ISO Inferred from Sequence Orthology more info
involved_in synaptic transmission, cholinergic	IBA Inferred from Biological aspect of Ancestor more info

Component	Evidence Code	Pubs
part_of acetylcholine-gated channel complex	IBA Inferred from Biological aspect of Ancestor more info
part_of acetylcholine-gated channel complex	IEA Inferred from Electronic Annotation more info
part_of acetylcholine-gated channel complex	ISO Inferred from Sequence Orthology more info
located_in cell periphery	IEA Inferred from Electronic Annotation more info
located_in cell periphery	ISO Inferred from Sequence Orthology more info
located_in membrane	IEA Inferred from Electronic Annotation more info
is_active_in neuron projection	IBA Inferred from Biological aspect of Ancestor more info
located_in neuron projection cytoplasm	IDA Inferred from Direct Assay more info	PubMed
is_active_in plasma membrane	IBA Inferred from Biological aspect of Ancestor more info
located_in plasma membrane	IEA Inferred from Electronic Annotation more info
located_in plasma membrane	ISO Inferred from Sequence Orthology more info
located_in plasma membrane	ISS Inferred from Sequence or Structural Similarity more info
located_in postsynaptic membrane	IEA Inferred from Electronic Annotation more info
located_in presynapse	IEA Inferred from Electronic Annotation more info
part_of protein-containing complex	IDA Inferred from Direct Assay more info	PubMed
is_active_in synapse	IBA Inferred from Biological aspect of Ancestor more info
is_active_in synapse	IEA Inferred from Electronic Annotation more info
is_active_in synapse	ISO Inferred from Sequence Orthology more info
located_in synaptic membrane	IEA Inferred from Electronic Annotation more info
located_in synaptic membrane	ISS Inferred from Sequence or Structural Similarity more info

General protein information

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Preferred Names: neuronal acetylcholine receptor subunit alpha-2

Names: cholinergic receptor, nicotinic, alpha 2 (neuronal); cholinergic receptor, nicotinic, alpha polypeptide 2 (neuronal); nicotinic acetylcholine receptor

NCBI Reference Sequences (RefSeq)

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RefSeqs maintained independently of Annotated Genomes

These reference sequences exist independently of genome builds. Explain

These reference sequences are curated independently of the genome annotation cycle, so their versions may not match the RefSeq versions in the current genome build. Identify version mismatches by comparing the version of the RefSeq in this section to the one reported in Genomic regions, transcripts, and products above.

mRNA and Protein(s)

NM_133420.1 → NP_596911.1 neuronal acetylcholine receptor subunit alpha-2 precursor

See identical proteins and their annotated locations for NP_596911.1

Status: PROVISIONAL

Source sequence(s)

L10077

UniProtKB/Swiss-Prot

O08952, P12389, Q53YK3

UniProtKB/TrEMBL

A0ABK0LI81, A6K6M0

Related

ENSRNOP00000023475.3, ENSRNOT00000023475.4

Conserved Domains (2) summary

TIGR00860
Location:35 → 504

LIC; Cation transporter family protein

cd19015
Location:36 → 242

LGIC_ECD_nAChR_A2; extracellular domain of nicotinic acetylcholine receptor subunit alpha 2 (CHRNA2)