FB2025_01 , released February 20, 2025
Allele: Dmel\icsG4
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General Information
Symbol
Dmel\icsG4
Species
D. melanogaster
Name
FlyBase ID
FBal0318750
Feature type
allele
Associated gene
Associated Insertion(s)
Carried in Construct
Key Links
Allele class
Mutagen
    Nature of the Allele
    Allele class
    Mutagen
    Progenitor genotype
    Associated Insertion(s)
    Cytology
    Description

    P{GawB} insertion into the ics gene.

    Allele components
    Component
    Use(s)
    Inserted element
    Mutations Mapped to the Genome
    Curation Data
    Type
    Location
    Additional Notes
    References
    Variant Molecular Consequences
    Associated Sequence Data
    DNA sequence
    Protein sequence
     
    Expression Data
    Reporter Expression
    Additional Information
    Statement
    Reference
     
    Marker for
    Reflects expression of
    Reporter construct used in assay
    Human Disease Associations
    Disease Ontology (DO) Annotations
    Models Based on Experimental Evidence ( 1 )
    Disease
    Evidence
    References
    Modifiers Based on Experimental Evidence ( 0 )
    Disease
    Interaction
    References
    Comments on Models/Modifiers Based on Experimental Evidence ( 0 )
     
    Disease-implicated variant(s)
     
    Phenotypic Data
    Phenotypic Class
    Phenotype Manifest In
    Detailed Description
    Statement
    Reference

    icsG4 homozygotes display wing blisters. icsG4/icsG4 flies are more resistant to ethanol-induced sedation than icsG4/+ or wild type flies, but have normal ethanol absorption and metabolism and show normal locomotion. icsG4/Df(2L)BSC147 flies are more resistant to ethanol-induced sedation than Df(2L)BSC147/+ flies.

    icsG4/icsG4 flies show a significant naive preference for ethanol, consuming more liquid food with ethanol on day 1 and 2 (and amounts consumed remain unchanged across 4 days) compared to controls (wild type flies gradually acquire a preference for ethanol over 3 days); total food consumption is not significantly different in mutants and controls.

    External Data
    Interactions
    Show genetic interaction network for Enhancers & Suppressors
    Phenotypic Class
    Suppressed by
    Statement
    Reference
    NOT suppressed by
    Statement
    Reference

    icsG4 has chemical resistant | adult stage phenotype, non-suppressible by mysts2/mys[+]

    Suppressor of
    Statement
    Reference
    NOT Suppressor of
    Statement
    Reference
    Phenotype Manifest In
    Additional Comments
    Genetic Interactions
    Statement
    Reference

    mysts2/+;icsG4/icsG4 flies have the same increased resistance to ethanol-induced sedation seen in icsG4/icsG4 mutants alone, unlike ethanol-sensitive mysts2/+ flies.

    Scer\GAL4ics-G4>Rac1DN.Scer\UAS.cUa;icsG4/icsG4 flies have the same increased sensitivity to ethanol-induced sedation seen in Scer\GAL4ics-G4>Rac1DN.Scer\UAS.cUa flies, unlike ethanol-resistant icsG4/icsG4 flies.

    Xenogenetic Interactions
    Statement
    Reference
    Complementation and Rescue Data
    Partially rescued by
    Comments

    Expression of icsScer\UAS.cOa driven by Scer\GAL4ics-G4 rescues resistance to ethanol-induced sedation in icsG4/icsG4 (or icsG4/Df(2L)BSC147) flies to control levels; there is no rescue when Scer\GAL80elav.PY (to suppress neuronal ics expression) is also present. Expression of icsScer\UAS.cOa driven by Scer\GAL4ics-G4 also restores ethanol consumption behavior in icsG4/icsG4 flies to wild type levels.

    Expression of icsScer\UAS.cOa driven by Scer\GAL4ics-G4 (using Scer\GAL80ts.αTub84B to control timing of expression) during adulthood alone (but not throughout development) rescues resistance to ethanol-induced sedation in icsG4/icsG4 flies to control levels.

    Expression of icsScer\UAS.cOa driven by Scer\GAL4ics-G4 restores ethanol consumption behavior in icsG4/icsG4 flies to wild type levels; flies with additional presence of Scer\GAL80Mef2.mb247 (to suppress ics expression in the mushroom bodies) show normal naive ethanol preference and normal resistance to ethanol-induced sedation, but unlike wild type do not acquire a preference for ethanol over 4 days.

    Images (0)
    Mutant
    Wild-type
    Stocks (0)
    Notes on Origin
    Discoverer
    Comments
    Comments

    Precise excision of the P{GawB} insertion reverts the mutant phenotype.

    External Crossreferences and Linkouts ( 0 )
    Synonyms and Secondary IDs (1)
    Reported As
    Symbol Synonym
    Name Synonyms
    Secondary FlyBase IDs
      References (1)