FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Allele: Dmel\fruMC.UAS.cSa
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General Information
Symbol
Dmel\fruMC.UAS.cSa
Species
D. melanogaster
Name
FlyBase ID
FBal0144288
Feature type
allele
Associated gene
Associated Insertion(s)
Carried in Construct
Key Links
Transgenic product class
Nature of the Allele
Transgenic product class
Progenitor genotype
Carried in construct
Cytology
Description

UASt regulatory sequences drive expression of fru consisting of sequences encoding the 101 male specific amino terminus and the BTB domain derived from the fru male cDNA nos. 5-19 fused to the "C" 3' end.

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

Approximately 32% of wild-type females expressing fruMB.Scer\UAS.cSa under the control of Scer\GAL4fru.16 develop on average two ectopic `male' serotonergic neurons, sending projections into the abdominal nerve trunk. Ectopic serotonergic terminals innervated the female internal reproductive organs, mostly the calyx of the ovaries but also, more rarely, the uterus and the base of the spermathecae. These serotonergic terminals are never present in virgin or fertilised wild-type females. The ectopic serotonergic neurons and their associated terminalia are analogous to those innervating the male reproductive organs.

The Fas2-positive and BP102-positive axon tracts in the central nervous system are defective in virtually all fruw12/frusat15 embryos which are expressing fruMC.Scer\UAS.cSa under the control of Scer\GAL4sca-537.4.

External Data
Interactions
Show genetic interaction network for Enhancers & Suppressors
Phenotypic Class
Phenotype Manifest In
Additional Comments
Genetic Interactions
Statement
Reference
Xenogenetic Interactions
Statement
Reference
Complementation and Rescue Data
Fails to rescue
Comments

Expression of fruMC.Scer\UAS.cSa, under the control of Scer\GAL4fru.16 in a fru3/fru3 background does not restore male fertility.

Expression of fruMC.Scer\UAS.cSa under the control of Scer\GAL4fru.16 in fru3 homozygotes and fru3/fruΔC transheterozygotes rescues the formation of the muscle of Lawrence in the male.

Extension of mating length beyond normal duration in fruΔC/fru3 males is rescued by targeted expression of fruMC.Scer\UAS.cSa via Scer\GAL4fru.16.

Expression of fruMC.Scer\UAS.cSa, under the control of Scer\GAL4fru.16 in a fru3 homozygote does not restore male fertility. However, expression of fruMC.Scer\UAS.cSa, under the control of Scer\GAL4fru.16 in a fruΔC/fru3 background, increases the percentage of fertile males from 33% to 78%.

During a 6 hour observation, fruΔC/fru3 males do not mate, whereas approximately 50% of fruΔC/fru3 males expressing fruMC.Scer\UAS.cSa do. These males are slower to initiate mating, although the duration of copulation is similar to that of wild-type males. A small number of control flies (i.e. fruMC.Scer\UAS.cSa/+ ; fruΔC/fru3) manage to mate within the same time as the 'rescued' males, probably due to 'leakage' of the transgene, although mating durations are still significantly longer than those of wild-type males.

Images (0)
Mutant
Wild-type
Stocks (0)
Notes on Origin
Discoverer
External Crossreferences and Linkouts ( 0 )
Synonyms and Secondary IDs (2)
Reported As
Symbol Synonym
fruMC.Scer\UAS.cSa
fruMC.UAS.cSa
Name Synonyms
Secondary FlyBase IDs
    References (4)