FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Allele: Dmel\tplus3aΔ
Open Close
General Information
Symbol
Dmel\tplus3aΔ
Species
D. melanogaster
Name
FlyBase ID
FBal0347487
Feature type
allele
Associated gene
Associated Insertion(s)
Carried in Construct
Key Links
Mutagen
Nature of the Allele
Progenitor genotype
Cytology
Description

A deletion of the tplus3a-tplus3b region leading to a fusion of tplus3a within its ORF to CR31700, an inactive pseudogene approximately 4,000 base pairs (bp) upstream, and yielding a null allele of tplus3a.

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
External Data
Interactions
Show genetic interaction network for Enhancers & Suppressors
Phenotypic Class
Phenotype Manifest In
Additional Comments
Genetic Interactions
Statement
Reference

tplus3aΔ, tplus3bΔ double homozygotes are male sterile; this phenotype is rescued by tplus3bEGFP.

In the testes of tplus3a, tplus3b double mutants (tplus3aΔ and tplus3bΔ over Df(2L)BSC151) many spermatid bundles are arranged in parallel, but some are dispersed in the testis and lose their cyst organization. In some cases the individualization complex is abnormal in that one end is thickened. Although the seminal vesicles are empty of mature sperm in 1-day old males, they accumulate more mature sperm than controls in 5- and 6-days old males. In agreement, these males produce much fewer progeny than controls by day 4, but progressively reach the fertility of wild-type, Df(2L)BSC151 heterozygous, or tplus3aΔ, tplus3bΔ double heterozygous controls.

Xenogenetic Interactions
Statement
Reference
Complementation and Rescue Data
Comments
Images (0)
Mutant
Wild-type
Stocks (0)
Notes on Origin
Discoverer

A single guide RNA was used to generate deletions in the related genes tplus3a and tplus3b, resulting in large parts of the open reading frame (ORF) of both genes being deleted.

Separable from: tplus3b[Δ].

External Crossreferences and Linkouts ( 0 )
Synonyms and Secondary IDs (2)
Reported As
Symbol Synonym
tplus3aΔ
Δtplus3a-tplus3b
Name Synonyms
Secondary FlyBase IDs
    References (1)