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Symbol CHRNA7 contributors: mct/npt/shn/pgu - updated : 23-01-2018
HGNC name cholinergic receptor, nicotinic, alpha 7 (neuronal)
HGNC id 1960
Corresponding disease
DEL15Q13 chromosome 15q13.3 microdeletion
DUP15Q13 chromosome 15q13.3 duplications
Location 15q13.3      Physical location : 32.322.690 - 32.462.383
Synonym name
  • cholinergic receptor, nicotinic, alpha polypeptide 7
  • nicotinic acetylcholine receptor alpha7 subunit precursor
  • neuronal acetylcholine receptor protein, alpha-7 chain
  • neuronal acetylcholine receptor subunit alpha-7
  • acetylcholine receptor, nicotinic, alpha 7 (neuronal)
  • a7 nicotinic acetylcholine receptor
  • alpha 7 neuronal nicotinic acetylcholine receptor
  • alpha-7 nicotinic cholinergic receptor subunit
  • Synonym symbol(s) CHRNA7-2, NACHRA7, nAChR
    TYPE functioning gene
    text partially duplicated
    STRUCTURE 139.70 kb     10 Exon(s)
    10 Kb 5' upstream gene genomic sequence study
    MAPPING cloned Y linked N status confirmed
    Map cen - D15S1013 - D15S1031 - CHRNA7 - D15S1010 - D15S231 - qter
    Physical map
    LOC388101 15 hypothetical gene supported by NM_173613 LOC388102 15 hypothetical gene supported by NM_014783 LOC390561 15 similar to hypothetical protein FLJ35785 LOC388103 15 hypothetical gene supported by NM_004667 LOC388104 15 similar to chromosome 1 open reading frame 37 KIAA1018 15q12 similar to chromosome 1 open reading frame 37 FLJ20313 15q13.1 hypothetical protein FLJ20313 TRPM1 15q13-q14 transient receptor potential cation channel, subfamily M, member 1 LOC283710 15q13.1 hypothetical LOC283710 KLF13 15q13.3-q14 Kruppel-like factor 13 LOC283711 15q13.1 hypothetical protein LOC283711 LOC388105 15 hypothetical gene supported by BC009274; NM_020385 C15orf16 15q13.1 chromosome 15 open reading frame 16 LOC388106 15 hypothetical gene supported by BC035506; BC041580; NM_017779 CHRNA7 15q14 cholinergic receptor, nicotinic, alpha polypeptide 7 LOC388107 15 similar to hyperpolarization activated cyclic nucleotide-gated potassium channel 2; brain cyclic nucleotide gated channel 2 LOC390562 15 similar to Dynamin-1 (D100) (Dynamin, brain) (B-dynamin) LOC161719 15q13.2 similar to hypothetical protein FLJ35785 LOC388108 15 similar to FLJ20574 protein LOC390563 15 similar to golgin-67 isoform c LOC390564 15 similar to neuronal nicotinic acetylcholine receptor beta4 subunit LOC338978 15q13.2 similar to M-phase phosphoprotein 10 LOC283719 15q13.2 similar to KIAA1971 protein LOC388109 15 similar to hypothetical protein FLJ35785 ARHGAP11A 15q13.2 similar to human GTPase-activating protein SGNE1 15q13-q14 secretory granule, neuroendocrine protein 1 (7B2 protein) CKTSF1B1 15q13-q15 cysteine knot superfamily 1, BMP antagonist 1 LOC388110 15 similar to 4930563P21Rik protein RYR3 15q15 ryanodine receptor 3
    TRANSCRIPTS type messenger
    text transcription of CHRNA7 is modulated by chromatin interactions with the PWS-IC (PMID:21840925)
    identificationnb exonstypebpproduct
    ProteinkDaAAspecific expressionYearPubmed
    10 splicing 2171 - 512 - 2017 29129316
    10 splicing 3443 - 531 - 2017 29129316
    Type restricted
       expressed in (based on citations)
    SystemOrgan level 1Organ level 2Organ level 3Organ level 4LevelPubmedSpeciesStageRna symbol
    Nervousbrain   highly Homo sapiensAdult
     brainlimbic systemhippocampusdentate gyrus  Homo sapiens
     brainlimbic systemhippocampus highly Homo sapiens
    Visualeyeretina    Homo sapiens
    SystemTissueTissue level 1Tissue level 2LevelPubmedSpeciesStageRna symbol
    Nervouscentral  predominantly Homo sapiens
    SystemCellPubmedSpeciesStageRna symbol
    Lymphoid/Immunedendritic cell Homo sapiens
    Lymphoid/Immunelymphocyte Homo sapiens
    Lymphoid/Immunemacrophage Homo sapiens
    Nervousneuron Homo sapiens
    cell lineage
    cell lines human neuroblastoma cell line SH-SY5Y and/or IMR-32 (
    at STAGE
  • a large N terminal extracellular domain
  • two agonist binding sites
  • four transmembrane segments (4TM) with the M2 domain comprising the cation-selective pore
  • conjugated Other
    mono polymer homomer , pentamer
    interspecies ortholog to chrna7, Danio rerio
    ortholog to Chrna7, Mus musculus
    ortholog to CHRNA7, Pan troglodytes
    ortholog to Chrna7, Rattus norvegicus
  • ligand-gated ionic channel family
  • CATEGORY receptor , transport channel
    SUBCELLULAR LOCALIZATION     plasma membrane
    text present in the outer membranes of mitochondria to regulate the early apoptotic events like cytochrome c release
    basic FUNCTION
  • regulating keratinocyte chemokinesis and chemotaxis, respectively, and signaling pathways mediating these functions, having clinical implications for wound healing and control of cancer metastases
  • implicated in neuronal functions, including learning, memory, and attention
  • plays an important role in non-small cell lung cancer cell growth and tumour progression as well as in cell death
  • plays a dominant role in nicotine-induced cell signaling
  • distinct and varied spatiotemporal expression of CHRNA7 during tooth development
  • is an important mediator of cholinergic transmission during brain development
  • exhibits a pleiotropic role in the hematopoietic system that includes both the direct modulation of pro-inflammatory cell composition and later in the adult the role of modulating pro-inflammatory responses that would impact upon an individual lifelong response to inflammation and infection
  • regulates axon growth in hippocampal neurons, thereby likely contributing to synaptic formation in the developing brain
  • regulate mitochondrial permeability transition pore formation through ion-independent mechanism involving activation of intramitochondrial PI3K/AKT1 pathway and inhibition of calcium-calmodulin-dependent or SRC-kinase-dependent signaling pathways
  • is a ligand-activated ion channel that contributes to a diversity of cellular processes involved in development, neurotransmission and inflammation
  • contributes to multiple aspects of adrenal gland development and function that persist into adulthood
  • role of the CHRNA7 in schizophrenia and likely cholinergic neurotransmission involving the CHRNA7 could be involved in sensory registration processes
  • activating CHRNA7 can promote diabetic wound healing by suppressing advanced glycation end products (AGEs)-induced TNF production, which may be closely associated with the blockage of NFKB1 activation in macrophages
  • make a complex contribution to network activity and synaptic plasticity in the prelimbic cortex
  • is emerging as an important drug target for intervention in inflammation and sepsis
  • anti-inflammatory role of CHRNA in Natural killer (NK) cells
  • has many important consequences in neuronal cells, including modulation of neuronal excitability and neurotransmitter release as well as calcium flux directly impacting multiple cellular signaling pathways
    a component
    small molecule
  • 42-amino acid beta-amyloid peptide, Abeta(1-42) (
  • PI3K p85 subunit and Fyn (
  • PWS-IC (
  • TFAP2A plays a negative role in regulating CHRNA7 transcription
  • interaction between CHRNA7 and a G-protein pathway complex regulates neurite growth in neural cells
  • regulate the early apoptotic events like cytochrome c release
  • APP promotes translocation of CHRNA7 towards the cell surface and CHRNA7 rescues neuronal cells from APP-induced damage
  • RIC3 is a known chaperone of neuronal CHRNA7
  • cell & other
    corresponding disease(s) DEL15Q13 , DUP15Q13
    Other morbid association(s)
    TypeGene ModificationChromosome rearrangementProtein expressionProtein Function
    constitutional     --over  
    may signal a compensatory response to maintain basocortical cholinergic activity during Alzheimer disease progression
    tumoral     --over  
    its expression is significantly higher in small-cell lung carcinoma (SCLC), as in carcinoid tumor
    Susceptibility to autism spectrum disorder
    Variant & Polymorphism other rare variants in autism spectrum disorder susceptibility
    Candidate gene
    Therapy target
    repression of CHRNA7 mRNA by TFAP2A might be evaluated as a potential modulatory factor in the development of pharmacological targets to treat the symptoms of schizophrenia and other mood disorders
    activation of CHRNA7 might be a new candidate for treatment of endometriosis
    activation of the CHRNA7/PI3K signaling pathway and its cross-talk with the Wnt signaling pathway might well be therapeutic targets for potential AD treatments
  • expression of CHRNA7 is significantly reduced frontal cortex from Rett syndrome and autism patients (
  • alpha7 nAChR knockout (KO) mouse is viable and has only slight visual dysfunction