FB2026_03 , released September 17, 2026
Allele: Dmel\Snmp1Z0429
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General Information
Symbol
Dmel\Snmp1Z0429
Species
D. melanogaster
Name
FlyBase ID
FBal0240756
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

    SnmpZ0429 contains a 5bp deletion that introduces a frame-shift and a concomitant premature termination at residue 204, approximately half-way through the protein.

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

    5 bp deletion that causes a frameshift and early termination near the middle of the Snmp1 protein.

    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 Snmp1Z0429 mutants, ai2 sensilla/Or83c neurons show delayed deactivation upon stimulation with farnesol, as compared to controls.

    Although they are still activated by farnesol, ai2a neurons from Snmp1Z0429 mutants have defective response kinetics.

    SnmpZ0429 mutants are defective for cVA (11-cis-vaccenyl acetate) sensitivity. T1 neurons from SnmpZ0429 mutants display increased basal activity (14-25 spikes per second compared with wild-type at ~1 spike per second). Basal activity and olfactory responses of basiconic neurons in SnmpZ0429 mutants are indistinguishable from wild-type controls.

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

    Snmp1Z0429 has abnormal smell perception phenotype, non-suppressible by lush1

    Phenotype Manifest In
    Additional Comments
    Genetic Interactions
    Statement
    Reference

    In Snmp1Z0429, Df(3R)OS-EF- double mutants, ai2 sensilla/Or83c neurons show a delayed deactivation upon stimulation with farnesol that is more severe than that of Snmp1Z0429 single mutants and similar to that of Df(3R)OS-EF- single mutants.

    Driving Or83cScer\UAS.cRa with Scer\GAL4Snmp1.PR restores farnesol sensitivity to ai2b neurons in Snmp1Z0429 mutants.

    Double mutants defective for lush1 SnmpZ0429 exhibit high spontaneous activity, indicating that Snmp functions downstream of lush in cVA signaling.

    Xenogenetic Interactions
    Statement
    Reference
    Complementation and Rescue Data
    Rescued by
    Not rescued by
    Comments

    Expression of SnmpOr67d.PJ in T1 neurons restores cVA sensitivity in SnmpZ0429 mutants.

    Expression of Snmplush.PJ in support cells fails to restore cVA sensitivity in SnmpZ0429 mutants.

    Images (0)
    Mutant
    Wild-type
    Stocks (0)
    Notes on Origin
    Discoverer
    External Crossreferences and Linkouts ( 0 )
    Synonyms and Secondary IDs (3)
    Reported As
    Name Synonyms
    Secondary FlyBase IDs
      References (4)