FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Gene: Dmel\nAChRα7
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General Information
Symbol
Dmel\nAChRα7
Species
D. melanogaster
Name
nicotinic Acetylcholine Receptor α7
Annotation Symbol
CG32538
Feature Type
FlyBase ID
FBgn0086778
Gene Model Status
Stock Availability
Gene Summary
nicotinic Acetylcholine Receptor α7 (nAChRα7) encodes a subunit of the nicotinic acetylcholine receptor, a pentameric neurotransmitter-gated ion channel. [Date last reviewed: 2019-02-28] (FlyBase Gene Snapshot)
Also Known As

Dα7, gfA, nAcRα-18C, nAChR, giant fibre A

Key Links
Genomic Location
Cytogenetic map
Sequence location
Recombination map
1-62
RefSeq locus
NC_004354 REGION:19327075..19348447
Sequence
Genomic Maps
Other Genome Views
The following external sites may use different assemblies or annotations than FlyBase.
Function
Gene Ontology (GO) Annotations (24 terms)
Molecular Function (5 terms)
Terms Based on Experimental Evidence (1 term)
CV Term
Evidence
References
Terms Based on Predictions or Assertions (5 terms)
CV Term
Evidence
References
Biological Process (10 terms)
Terms Based on Experimental Evidence (6 terms)
CV Term
Evidence
References
inferred from mutant phenotype
involved_in jump response
inferred from mutant phenotype
inferred from direct assay
inferred from expression pattern
involved_in visual behavior
inferred from mutant phenotype
Terms Based on Predictions or Assertions (5 terms)
CV Term
Evidence
References
Cellular Component (9 terms)
Terms Based on Experimental Evidence (4 terms)
CV Term
Evidence
References
located_in dendrite
inferred from direct assay
located_in dendritic spine
inferred from direct assay
inferred from direct assay
Terms Based on Predictions or Assertions (6 terms)
CV Term
Evidence
References
is_active_in neuron projection
inferred from biological aspect of ancestor with PANTHER:PTN000434994
is_active_in plasma membrane
inferred from biological aspect of ancestor with PANTHER:PTN001054635
inferred from electronic annotation with InterPro:IPR002394
is_active_in synapse
inferred from biological aspect of ancestor with PANTHER:PTN000434994
Protein Family (UniProt)
-
Summaries
Gene Snapshot
nicotinic Acetylcholine Receptor α7 (nAChRα7) encodes a subunit of the nicotinic acetylcholine receptor, a pentameric neurotransmitter-gated ion channel. [Date last reviewed: 2019-02-28]
Gene Group (FlyBase)
NICOTINIC ACETYLCHOLINE RECEPTOR SUBUNITS -
Nicotinic ligand-gated ion channels (nAChR) mediate the fast actions of the acetylcholine (ACh). The non-selective ion channel is formed from five subunits arranged around a central pore. The ACh binding site is formed by two adjacent α subunits. Other regulatory subunits may modulate channel pharmacology and expression. (Adapted from FBrf0183743).
Phenotypic Description (Red Book; Lindsley and Zimm 1992)
gfA: giant fiber A (J.C. Hall; R.A. Wyman)
Adults have an aberrant startle response; they do not jump when presented with a lights-off stimulus. The dorso-longitudinal indirect flight muscles (DLMs) are abnormally driven by the giant fiber pathway neurons (see entry for ben). DLMs are driven at long and variable latencies after brain stimulation. Morphology of the giant fiber and its response to stimulation is normal. The motor neuron of the tergotrochanteral (jump) muscle is driven normally by the giant fiber. The physiological defect in gfA is probably located at the synapses between the peripherally synapsing interneuron (PSI) and the DLM motor neurons in the thoracic ganglion. gfA complements pas.
Summary (Interactive Fly)

neurotransmitter-gated ion-channels - cholinergic synapse formation and dendritic refinement - site of action of insecticides

Gene Model and Products
Number of Transcripts
4
Number of Unique Polypeptides
2

Please see the JBrowse view of Dmel\nAChRα7 for information on other features

To submit a correction to a gene model please use the Contact FlyBase form

Protein Domains (via Pfam)
Isoform displayed:
Pfam protein domains
InterPro name
classification
start
end
Protein Domains (via SMART)
Isoform displayed:
SMART protein domains
InterPro name
classification
start
end
Structure
Protein 3D structure   (Predicted by AlphaFold)   (AlphaFold entry E1JJR2)

If you don't see a structure in the viewer, refresh your browser.
Model Confidence:
  • Very high (pLDDT > 90)
  • Confident (90 > pLDDT > 70)
  • Low (70 > pLDDT > 50)
  • Very low (pLDDT < 50)

AlphaFold produces a per-residue confidence score (pLDDT) between 0 and 100. Some regions with low pLDDT may be unstructured in isolation.

Experimentally Determined Structures
Crossreferences
Comments on Gene Model

Gene model reviewed during 5.52

Transcript Data
Annotated Transcripts
Name
FlyBase ID
RefSeq ID
Length (nt)
Assoc. CDS (aa)
FBtr0074680
4145
560
FBtr0301834
5522
560
FBtr0301835
4214
564
FBtr0343798
5607
560
Additional Transcript Data and Comments
Reported size (kB)
Comments
External Data
Crossreferences
Polypeptide Data
Annotated Polypeptides
Name
FlyBase ID
Predicted MW (kDa)
Length (aa)
Theoretical pI
UniProt
RefSeq ID
GenBank
Polypeptides with Identical Sequences

The group(s) of polypeptides indicated below share identical sequence to each other.

Additional Polypeptide Data and Comments
Reported size (kDa)
Comments
External Data
Linkouts
Sequences Consistent with the Gene Model
Mapped Features

Click to get a list of regulatory features (enhancers, TFBS, etc.) and gene disruptions (point mutations, indels, etc.) within or overlapping Dmel\nAChRα7 using the Feature Mapper tool.

External Data
Crossreferences
Eukaryotic Promoter Database - A collection of databases of experimentally validated promoters for selected model organisms.
Linkouts
Expression Data
Testis-specificity index

The testis specificity index was calculated from modENCODE tissue expression data by Vedelek et al., 2018 to indicate the degree of testis enrichment compared to other tissues. Scores range from -2.52 (underrepresented) to 5.2 (very high testis bias).

-0.49

Transcript Expression
RT-PCR
Stage
Tissue/Position (including subcellular localization)
Reference
Additional Descriptive Data
Marker for
 
Subcellular Localization
CV Term
Polypeptide Expression
immunolocalization
Stage
Tissue/Position (including subcellular localization)
Reference
mass spectroscopy
Stage
Tissue/Position (including subcellular localization)
Reference
Additional Descriptive Data

nAChRalpha7 protein is expressed in the dendritic terminals of the horizontal and vertical system neurons in the lobula plate. It is also expressed in other periesophageal neuropils.

Marker for
 
Subcellular Localization
CV Term
Evidence
References
located_in dendrite
inferred from direct assay
located_in dendritic spine
inferred from direct assay
inferred from direct assay
Expression Deduced from Reporters
Stage
Tissue/Position (including subcellular localization)
Reference
High-Throughput Expression Data
Associated Tools

JBrowse - Visual display of RNA-Seq signals

View Dmel\nAChRα7 in JBrowse
RNA-Seq by Region - Search RNA-Seq expression levels by exon or genomic region
Reference
See Gelbart and Emmert, 2013 for analysis details and data files for all genes.
Developmental Proteome: Life Cycle
Developmental Proteome: Embryogenesis
External Data and Images
Linkouts
DRscDB - A single-cell RNA-seq resource for data mining and data comparison across species
EMBL-EBI Single Cell Expression Atlas - Single cell expression across species
FlyAtlas2 - A Drosophila melanogaster expression atlas with RNA-Seq, miRNA-Seq and sex-specific data
Flygut - An atlas of the Drosophila adult midgut
Images
Alleles, Insertions, Transgenic Constructs, and Aberrations
Classical and Insertion Alleles ( 34 )
For All Classical and Insertion Alleles Show
 
Other relevant insertions
Transgenic Constructs ( 25 )
For All Alleles Carried on Transgenic Constructs Show
Transgenic constructs containing/affecting coding region of nAChRα7
Transgenic constructs containing regulatory region of nAChRα7
Aberrations (Deficiencies and Duplications) ( 3 )
Variants
Variant Molecular Consequences
Alleles Representing Disease-Implicated Variants
Phenotypes
For more details about a specific phenotype click on the relevant allele symbol.
Lethality
Allele
Sterility
Allele
Other Phenotypes
Allele
Phenotype manifest in
Allele
Orthologs
Human Orthologs (via DIOPT v9.1)
Species\Gene Symbol
Score
Best Score
Best Reverse Score
Alignment
Complementation?
Transgene?
Homo sapiens (Human) (27)
12 of 14
Yes
Yes
12 of 14
Yes
Yes
2 of 14
No
No
2 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1  
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
Yes
1 of 14
No
Yes
1 of 14
No
No
1  
1 of 14
No
No
1 of 14
No
No
5  
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
Model Organism Orthologs (via DIOPT v9.1)
Species\Gene Symbol
Score
Best Score
Best Reverse Score
Alignment
Complementation?
Transgene?
Rattus norvegicus (Norway rat) (19)
11 of 14
Yes
Yes
2 of 14
No
No
2 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
Yes
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
Mus musculus (laboratory mouse) (19)
12 of 14
Yes
Yes
2 of 14
No
No
2 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
Xenopus tropicalis (Western clawed frog) (14)
10 of 13
Yes
Yes
10 of 13
Yes
Yes
9 of 13
No
Yes
2 of 13
No
Yes
2 of 13
No
Yes
1 of 13
No
No
1 of 13
No
No
1 of 13
No
Yes
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
1 of 13
No
Yes
1 of 13
No
No
1 of 13
No
Yes
Danio rerio (Zebrafish) (35)
12 of 14
Yes
Yes
11 of 14
No
Yes
11 of 14
No
Yes
11 of 14
No
Yes
2 of 14
No
Yes
2 of 14
No
No
2 of 14
No
Yes
2 of 14
No
Yes
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
Yes
1 of 14
No
No
1 of 14
No
Yes
1 of 14
No
Yes
1 of 14
No
Yes
1 of 14
No
No
Caenorhabditis elegans (Nematode, roundworm) (64)
11 of 14
Yes
Yes
9 of 14
No
Yes
7 of 14
No
Yes
7 of 14
No
Yes
5 of 14
No
Yes
4 of 14
No
No
4 of 14
No
No
4 of 14
No
No
4 of 14
No
Yes
4 of 14
No
No
3 of 14
No
Yes
3 of 14
No
No
2 of 14
No
No
2 of 14
No
Yes
2 of 14
No
Yes
2 of 14
No
No
2 of 14
No
Yes
2 of 14
No
Yes
2 of 14
No
Yes
2 of 14
No
No
2 of 14
No
No
2 of 14
No
No
2 of 14
No
No
2 of 14
No
No
2 of 14
No
No
2 of 14
No
No
2 of 14
No
No
2 of 14
No
No
2 of 14
No
No
2 of 14
No
No
2 of 14
No
No
2 of 14
No
Yes
2 of 14
No
Yes
2 of 14
No
No
2 of 14
No
Yes
2 of 14
No
Yes
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
Yes
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
Yes
1 of 14
No
No
1 of 14
No
Yes
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
Anopheles gambiae (African malaria mosquito) (17)
12 of 12
Yes
Yes
Arabidopsis thaliana (thale-cress) (0)
Saccharomyces cerevisiae (Brewer's yeast) (0)
Schizosaccharomyces pombe (Fission yeast) (0)
Escherichia coli (enterobacterium) (0)
Other Organism Orthologs (via OrthoDB)
Data provided directly from OrthoDB:nAChRα7. Refer to their site for version information.
Paralogs
Paralogs (via DIOPT v9.1)
Drosophila melanogaster (Fruit fly) (22)
11 of 13
11 of 13
4 of 13
3 of 13
3 of 13
3 of 13
3 of 13
3 of 13
2 of 13
2 of 13
2 of 13
2 of 13
2 of 13
2 of 13
2 of 13
2 of 13
2 of 13
1 of 13
1 of 13
1 of 13
1 of 13
1 of 13
Human Disease Associations
FlyBase Human Disease Model Reports
    Disease Ontology (DO) Annotations
    Models Based on Experimental Evidence ( 0 )
    Allele
    Disease
    Evidence
    References
    Potential Models Based on Orthology ( 0 )
    Human Ortholog
    Disease
    Evidence
    References
    Modifiers Based on Experimental Evidence ( 1 )
    Allele
    Disease
    Interaction
    References
    Disease Associations of Human Orthologs (via DIOPT v9.1 and OMIM)
    Note that ortholog calls supported by only 1 or 2 algorithms (DIOPT score < 3) are not shown.
    Homo sapiens (Human)
    Gene name
    Score
    OMIM
    OMIM Phenotype
    DO term
    Complementation?
    Transgene?
    Functional Complementation Data
    Functional complementation data is computed by FlyBase using a combination of the orthology data obtained from DIOPT and OrthoDB and the allele-level genetic interaction data curated from the literature.
    Interactions
    Summary of Physical Interactions
    Summary of Genetic Interactions
    Interaction Browsers
    Starting gene(s)
    Interaction type
    Interacting gene(s)
    Reference
    Starting gene(s)
    Interaction type
    Interacting gene(s)
    Reference
    External Data
    Linkouts
    DroID - A comprehensive database of gene and protein interactions.
    MIST (protein-protein) - An integrated Molecular Interaction Database
    Pathways
    Signaling Pathways (FlyBase)
    Metabolic Pathways
    FlyBase
    External Links
    External Data
    Linkouts
    Class of Gene
    Genomic Location and Detailed Mapping Data
    Chromosome (arm)
    X
    Recombination map
    1-62
    Cytogenetic map
    Sequence location
    FlyBase Computed Cytological Location
    Cytogenetic map
    Evidence for location
    18C2-18C3
    Limits computationally determined from genome sequence between P{EP}CG8051EP1550&P{EP}EP1300 and P{EP}EP1526&P{EP}PfrxEP1150
    Experimentally Determined Cytological Location
    Cytogenetic map
    Notes
    References
    Experimentally Determined Recombination Data
    Location
    Left of (cM)
    Right of (cM)
    Notes

    1-61.1

    Stocks and Reagents
    Stocks (35)
    Genomic Clones (26)
    cDNA Clones (18)
     

    Please Note This section lists cDNAs and ESTs that fall within the genomic extent of the gene model, which may include cDNAs and ESTs of genes within introns, or of overlapping genes. Please see JBrowse for alignment of the cDNAs and ESTs to the gene model.

    cDNA clones, fully sequenced
    BDGP DGC clones
      Other clones
        Drosophila Genomics Resource Center cDNA clones

        For each fully sequenced cDNA the DGRC maintains various forms of the cDNA (e.g tagged or untagged) in several different host vectors for subsequent cloning and expression in Drosophila and Drosophila cell lines.

        cDNA Clones, End Sequenced (ESTs)
        BDGP DGC clones
          Other clones
            RNAi and Array Information
            Linkouts
            DRSC - Results frm RNAi screens
            Antibody Information
            Laboratory Generated Antibodies
             
            Commercially Available Antibodies
             
            Cell Line Information
            Publicly Available Cell Lines
             
              Other Stable Cell Lines
               
                Other Comments

                Mutations disrupt the synaptic transmission of the giant fibre (GF) - dorso-longitudinal muscle (DLM) pathway.

                gfA1/Df(1)JA27 is said to be indistinguishable from gfA1/gfA1 (Thomas and Wyman, 1984). Physiological effects of gfA1 and gfA2 are ostensibly the same.

                Adults have an aberrant startle response; they do not jump when presented with a lights-off stimulus. The dorso-longitudinal indirect flight muscles (DLMs) are abnormally driven by the giant fiber pathway neurons (see entry for ben). DLMs are driven at long and variable latencies after brain stimulation. Morphology of the giant fiber and its response to stimulation is normal. The motor neuron of the tergotrochanteral (jump) muscle is driven normally by the giant fiber. The physiological defect in gfA is probably located at the synapses between the peripherally synapsing interneuron (PSI) and the DLM motor neurons in the thoracic ganglion.

                Relationship to Other Genes
                Source for database merge of

                Source for merge of: gfA nAcRα-18C

                Source for merge of: nAcRα-18C gfA

                Source for merge of: nAcRα-18C CG8082

                Additional comments

                Annotations CG8082 and CG8109 merged as CG32538 in release 3 of the genome annotation.

                Source for identity of nAcRα-18C CG8109 was sequence comparison ( date:020502 ).

                gfA complements pas.

                Nomenclature History
                Source for database identify of

                Source for identity of: nAcRα-18C CG8109

                Source for identity of: nAChRα7 gfA

                Nomenclature comments

                Renamed genes encoding nicotinic Acetylcholine Receptors to give systematic nomenclature that better reflects usage in literature (e.g. FBrf0218556, FBrf0183743).

                Etymology
                Synonyms and Secondary IDs (44)
                Reported As
                Symbol Synonym
                CG8082
                CG8109
                jpl
                nAChR-Dα7
                nAChR-gfa
                nAcRalpha-18C
                nAcRalpha18C
                nj507
                nj520
                nj522
                nj54
                nj75
                Name Synonyms
                Dalpha7
                Dα7 subunit of the acetylcholine receptor
                Dα7 subunit of the nicotinic acetylcholine receptor
                Shaker cognate L
                giant fibre A
                jumpless
                nicotinic Acetylcholine Receptor α 18C
                nicotinic Acetylcholine Receptor α7
                non-jumper-507
                non-jumper-520
                non-jumper-522
                non-jumper-54
                non-jumper-75
                Secondary FlyBase IDs
                • FBgn0005396
                • FBgn0001102
                • FBgn0001290
                • FBgn0031013
                • FBgn0052538
                • FBgn0031014
                Datasets (0)
                Study focus (0)
                Experimental Role
                Project
                Project Type
                Title
                Study result (0)
                Result
                Result Type
                Title
                External Crossreferences and Linkouts ( 49 )
                Sequence Crossreferences
                NCBI Gene - Gene integrates information from a wide range of species. A record may include nomenclature, Reference Sequences (RefSeqs), maps, pathways, variations, phenotypes, and links to genome-, phenotype-, and locus-specific resources worldwide.
                GenBank Nucleotide - A collection of sequences from several sources, including GenBank, RefSeq, TPA, and PDB.
                GenBank Protein - A collection of sequences from several sources, including translations from annotated coding regions in GenBank, RefSeq and TPA, as well as records from SwissProt, PIR, PRF, and PDB.
                RefSeq - A comprehensive, integrated, non-redundant, well-annotated set of reference sequences including genomic, transcript, and protein.
                UniProt/GCRP - The gene-centric reference proteome (GCRP) provides a 1:1 mapping between genes and UniProt accessions in which a single 'canonical' isoform represents the product(s) of each protein-coding gene.
                UniProt/TrEMBL - Automatically annotated and unreviewed records of protein sequence and functional information
                Other crossreferences
                AlphaFold DB - AlphaFold provides open access to protein structure predictions for the human proteome and other key proteins of interest, to accelerate scientific research.
                DRscDB - A single-cell RNA-seq resource for data mining and data comparison across species
                EMBL-EBI Single Cell Expression Atlas - Single cell expression across species
                FlyAtlas2 - A Drosophila melanogaster expression atlas with RNA-Seq, miRNA-Seq and sex-specific data
                FlyMine - An integrated database for Drosophila genomics
                KEGG Genes - Molecular building blocks of life in the genomic space.
                MARRVEL_MODEL - MARRVEL (model organism gene)
                Linkouts
                Drosophila Genomics Resource Center - Drosophila Genomics Resource Center (DGRC) cDNA clones
                DroID - A comprehensive database of gene and protein interactions.
                DRSC - Results frm RNAi screens
                Eukaryotic Promoter Database - A collection of databases of experimentally validated promoters for selected model organisms.
                FlyCyc Genes - Genes from a BioCyc PGDB for Dmel
                Flygut - An atlas of the Drosophila adult midgut
                FlyMet - A comprehensive tissue-specific metabolomics resource for Drosophila.
                iBeetle-Base - RNAi phenotypes in the red flour beetle (Tribolium castaneum)
                Interactive Fly - A cyberspace guide to Drosophila development and metazoan evolution
                MIST (protein-protein) - An integrated Molecular Interaction Database
                References (167)