FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Allele: Dmel\Drep1P
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General Information
Symbol
Dmel\Drep1P
Species
D. melanogaster
Name
FlyBase ID
FBal0141563
Feature type
allele
Associated gene
Associated Insertion(s)
Carried in Construct
Key Links
Allele class
Nature of the Allele
Allele class
Progenitor genotype
Associated Insertion(s)
Cytology
Description

P-element local hopping, resulting in a P{lacW} insertion in the 5'UTR of Rep1, 17bp upstream of the ATG initiation codon.

Allele components
Component
Use(s)
Inserted element
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

Drep-1P homozygous egg chambers from animals subjected to starvation conditions to induce mid-oogenesis programmed cell death display abnormal chromatin compaction, and nurse cell nuclei persist until late stages of degeneration. An elongated egg chamber morphology is observed. Eventually most follicle cells degenerate, and small sacs of nurse cell nuclei are observed.

28% of stage 14 egg chambers show persistant nurse cell nuclei, compared to 7% in controls.

Embryonic cells of mutant embryos do undergo apoptosis after exposure to X rays (as occurs in wild-type cells exposed to X rays) but the apoptosis is not accompanied by DNA fragmentation in the mutant cells.

Apoptotic DNA fragmentation is not detectable in Rep1P mutant embryos or adult ovaries. There is no abnormal deposition of acridine positive material in Rep1P mutant embryos.

External Data
Interactions
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Phenotypic Class
Phenotype Manifest In
Additional Comments
Genetic Interactions
Statement
Reference

68% of Drep-1P; DNaseIIlo double mutant stage 14 egg chambers show persisting nurse cell nuclei, enhanced compared to each single mutant phenotype. The persisting DNA is smeared as observed in DNaseIIlo mutants, unlike the discrete nuclei observed in wild-type and Drep-1P single mutants. 3% of egg chambers display a dumpless phenotype where nurse cell cytoplasm has not been transferred to the oocyte.

Apoptotic DNA fragmentation is not detectable in Rep1P, DNaseIIlo double mutant embryos or adult ovaries. The ovaries of double mutant Rep1P, DNaseIIlo flies accumulate large amounts of acridine positive material.

Xenogenetic Interactions
Statement
Reference
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 (7)
Reported As
Symbol Synonym
Drep-1P
Drep1P
Rep1P
Name Synonyms
Secondary FlyBase IDs
    References (4)