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FB2025_05,released December 11, 2025
FlyBase in AWS Open Data
FlyBase NIH Grant Terminated
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FB2025_05,released December 11, 2025
Allele: Dmel\Xbp1UAS.RB
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General Information
Symbol
Dmel\Xbp1UAS.RB
Species
D. melanogaster
Name
FlyBase ID
FBal0230352
Feature type
allele
Associated gene
Associated Insertion(s)
Carried in Construct
Also Known As
UAS-Xbp1-RB, UAS-Xbp1s, UAS::xbp1spliced, xbp1-RB
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 theXbp1-RB isoform.

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

Expression ofXbp1UAS.RB under the control ofScer\GAL4bs.Term causes air-filling defects and reduced branch numbers in the trachea terminal cells region.

Overexpression ofXbp1Scer\UAS.RB in class IV da neurons (Scer\GAL4ppk.PU) or class III da neurons (Scer\GAL419-12 in combination withScer\GAL80repo.PL) significantly enhances axon regeneration.

Expression ofXbp1Scer\UAS.RB under the control ofScer\GAL4bun-GSG5961, using RU486 food supplementation to induce the expression, extends adult lifespan relative to controls.

The temporally regulated expression (by Gal80[ts]) ofXbp1UAS.RB, for 5 days under the control ofScer\GAL4NP5130, does not lead to a significant change in the proportion of mitotic cells in the adult midgut, as compared to controls; clonal expression under the control ofScer\GAL4unspecified in adult midgut clones leads to a significant decrease in clone cell number at 7 days after clone induction, as compared to control clones.

Xbp1Scer\UAS.RB clones in fat bodies from well-fed early third instar larvae (generated usingScer\GAL4Act5C.PP) accumulate lysosomes, as indicated by elevated LysoTracker staining, and show redistribution of theAtg8a product into autophagosomes.

Expression ofXbp1Scer\UAS.RB under the control ofScer\GAL4GMR.PF generates small, rough eyes with enhanced cell death.

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

The increased cell proliferation in the adult gut observed in flies expressingEro1LGD3577 under the control ofScer\GAL4esg-NP5130 (and using tub-Gal80[ts] to limit the time of expression) is suppressed by co-expression ofXbp1Scer\UAS.RB.

Expression ofXbp1Scer\UAS.RB under the control ofScer\GAL4arm.PS inpcx3 embryos which lack maternal and zygoticpcx function partially rescues the neurogenic phenotype: 31% of embryos are fully rescued, 43% are partially rescued and 26% are not rescued. The endoplasmic reticulum defects are also rescued in 74% of cases.

Xenogenetic Interactions
Statement
Reference

Co-expression ofBacA\p35Scer\UAS.cHa does not suppress the small, rough eyes with enhanced cell death phenotype ofXbp1Scer\UAS.RB,Scer\GAL4GMR.PF flies.

Complementation and Rescue Data
Comments
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
Xbp1Scer\UAS.RB
Xbp1UAS.RB
Name Synonyms
Secondary FlyBase IDs
    References (14)

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