FB2026_02 , released June 18, 2026
FB2026_02 , released June 18, 2026
Allele: Dmel\bamΔPEST
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General Information
Symbol
Dmel\bamΔPEST
Species
D. melanogaster
Name
FlyBase ID
FBal0243774
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

Fragment containing bam promoter and coding sequence, encoding a frameshift mutation in the coding region that changes the identity of 7aa and deletes 22 more subsequent amino acids (removing most of the PEST sequence and the rest of the C-terminus).

Allele components
Component
Use(s)
Regulatory region(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

Mutant males carrying one copy of bamΔPEST in a wild-type background show premature spermatocyte differentiation of germline cysts at the 8-cell stage in 9-18% of cysts. 40% of cysts prematurely differentiate at the 8-cell stage in males carrying one copy of bamΔPEST in a bamΔ86/+ background. Males carrying two copies of bamΔPEST in a wild-type background show premature differentiation of germline cysts at the 8-cell stage in 68% of cysts. In these cases, the 8-cell cysts have large cells with typical spermatocyte morphology. Post-meiotic cysts are observed with 32 instead of 64 elongating spermatids.

External Data
Interactions
Show genetic interaction network for Enhancers & Suppressors
Phenotypic Class
Phenotype Manifest In
Suppressor of
Statement
Reference

bamΔPEST is a suppressor of nucleolus phenotype of mei-P26mfs1

Additional Comments
Genetic Interactions
Statement
Reference

Expression of bamΔPEST completely rescues the overproliferation defects seen in the testes of mei-P26mfs1 males and 43% of the cysts in the spermatocyte region have 16 spermatocytes per cyst. The enlarged nucleolus phenotype seen in mei-P26mfs1 testes is also suppressed. The spermatocyte and spermatid differentiation defects are not rescued: 30% of cysts from the spermatocyte region have differentiation defects in the rescued males.

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 (1)
Reported As
Symbol Synonym
Name Synonyms
Secondary FlyBase IDs
    References (4)