FB2026_02 , released June 18, 2026
Allele: Dmel\Gr66aUAS.Tag:MYC
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General Information
Symbol
Dmel\Gr66aUAS.Tag:MYC
Species
D. melanogaster
Name
FlyBase ID
FBal0194163
Feature type
allele
Associated gene
Associated Insertion(s)
Carried in Construct
Also Known As
UAS-Gr66a
Key Links
Transgenic product class
Nature of the Allele
Transgenic product class
Progenitor genotype
Carried in construct
Cytology
Description

UAS regulatory sequences drive expression of the full Gr66a coding region, tagged with Tag:MYC.

Allele components
Component
Use(s)
Encoded product / tool
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 ( 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

The expression of Gr66aUAS.Tag:MYC under the control of Scer\GAL4Gr64f.9.7 is not sufficient to make L-type sensilla responsive to the bitter chemicals LOB, BER and DEN.

External Data
Interactions
Show genetic interaction network for Enhancers & Suppressors
Phenotypic Class
Suppressed by
NOT suppressed by
Other
Statement
Reference
Phenotype Manifest In
Additional Comments
Genetic Interactions
Statement
Reference

The sextuple co-expression of Gr32aUAS.cSa, Gr33aUAS.cMa, Gr39aUAS.a.cSa, Gr59cUAS.cUa, Gr66aUAS.Tag:MYC and Gr89aUAS.cSa under the control of Scer\GAL4Gr64f.9.7 makes L-type sensilla responsive to the bitter chemicals LOB, BER, and DEN, but not to the bitter chemicals CAF, STR, SOA or UMB. Control L-type sensilla, however, are only responsive to sucrose; this sextuple co-expression has no effect on the normal response to sucrose.

Only quintuple co-expression combinations that include Gr32aUAS.cSa, Gr59cUAS.cUa and Gr66aUAS.Tag:MYC induce responsiveness of L-type sensilla to LOB, BER, and DEN. In agreement, the triple co-expression of Gr32aUAS.cSa, Gr59cUAS.cUa and Gr66aUAS.Tag:MYC is sufficient to induce responsiveness to LOB, BER, and DEN, but not to CAF, STR, SOA, or UMP, whereas all double combinations of these three do not. All mentioned quintuple, triple and double co-expression have no effect on the normal response to sucrose.

L-type sensilla co-expressing Gr32aUAS.cSa, Gr59cUAS.cUa and Gr66aUAS.Tag:MYC under the control of Scer\GAL4Gr64f.9.7 show the expected responsiveness to sucrose and ectopic responsiveness to the bitter chemicals LOB, BER and DEN. Df(3L)ΔGr64af abolishes the expected responsiveness to sucrose, but not the bitter chemicals.

The triple co-expression of Gr32aUAS.cSa, Gr66aUAS.Tag:MYC and Gr22eUAS.cSa under the control of Scer\GAL4Gr64f.9.7 makes L-type sensilla responsive to the bitter chemicals LOB, BER, DEN, STR and UMB, but not to CAF or SOA, while not affecting the normal response to sucrose. Df(3L)ΔGr64af abolishes the responsiveness to sucrose, reduces the ectopic responsiveness to STR, but has no effect on the ectopic responsiveness to LOB, BER and DEN.

The triple co-expression of Gr32aUAS.cSa, Gr66aUAS.Tag:MYC and either Gr22fUAS.cSa or Gr39bUAS.cSa under the control of Scer\GAL4Gr64f.9.7 does not confer responsiveness of L-type sensilla to the bitter chemicals LOB, BER or DEN.

As in control flies, co-expression of Gr32aScer\UAS.cMa, Gr33aScer\UAS.cMa, Gr47aScer\UAS.cLa and Gr66aScer\UAS.T:Hsap\MYC under the control of Scer\GAL4Gr5a.PUn does not elicit action potentials in sugar-responsive gustatory receptor neurons upon application of strychnine.

Xenogenetic Interactions
Statement
Reference
Complementation and Rescue Data
Comments

Expression of Gr66aScer\UAS.T:Hsap\MYC under the control of Scer\GAL4Gr66a.PD in the Df(3L)ex83 homozygote adults rescues the perturbed avoidance of umbelliferone in a two-way choice feeding assay as well as the site selection for oviposition assay and partially restores the reduction in frequency of action potentials invoked in the S6 sensilla upon umbelliferone exposure.

Images (0)
Mutant
Wild-type
Stocks (1)
Notes on Origin
Discoverer
External Crossreferences and Linkouts ( 0 )
Synonyms and Secondary IDs (2)
Reported As
Symbol Synonym
Gr66aScer\UAS.T:Hsap\MYC
Gr66aUAS.Tag:MYC
Name Synonyms
Secondary FlyBase IDs
    References (7)