FB2026_02 , released June 18, 2026
Allele: Dmel\norpAH52
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General Information
Symbol
Dmel\norpAH52
Species
D. melanogaster
Name
FlyBase ID
FBal0013124
Feature type
allele
Associated gene
Associated Insertion(s)
Carried in Construct
Key Links
Genomic Maps

Allele class
Mutagen
    Nature of the Allele
    Allele class
    Mutagen
    Progenitor genotype
    Cytology
    Description

    Amino acid replacement: S551Y.

    Nucleotide substitution: C2304A. Amino acid replacement: S551Y.

    Ser551 --> Tyr

    Mutations Mapped to the Genome
    Curation Data
    Type
    Location
    Additional Notes
    References
    Nucleotide change:

    C4358815A

    Reported nucleotide change:

    C2304A

    Amino acid change:

    S551Y | norpA-PA; S551Y | norpA-PB; S551Y | norpA-PC; S551Y | norpA-PD; S551Y | norpA-PE; S551Y | norpA-PF

    Reported amino acid change:

    S551Y

    Comment:

    Site of nucleotide substitution in mutant inferred by FlyBase based on reported amino acid change.

    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 ( 0 )
    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

    In larvae with the temperature-sensitive norpA31 allele reared at the permissive temperature (25[o]C), thermal preference is indistinguishable from wild-type, whereas after a 37[o]C heat shock the larvae lost their ability to choose 18[o]C.

    The amplitude of quantum bumps in mutant photoreceptors is smaller than wild type (when ATP is present in the intracellular solution during recordings).

    The size and shape of the quantum bumps are unaffected, although the latency is significantly different from wild type.

    Photoreceptors degenerate with age. Photoreceptor potential disappears within less than 1 second with a temperature shift to nonpermissive temperatures.

    Temperature-sensitive mutation.

    temperature-sensitive allele

    External Data
    Interactions
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    Phenotypic Class
    Phenotype Manifest In
    Additional Comments
    Genetic Interactions
    Statement
    Reference
    Xenogenetic Interactions
    Statement
    Reference
    Complementation and Rescue Data
    Comments
    Images (0)
    Mutant
    Wild-type
    Stocks (0)
    Notes on Origin
    Discoverer

    Heisenberg.

    External Crossreferences and Linkouts ( 0 )
    Synonyms and Secondary IDs (3)
    References (12)