FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Allele: Dmel\pAbpEY11561
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General Information
Symbol
Dmel\pAbpEY11561
Species
D. melanogaster
Name
FlyBase ID
FBal0158843
Feature type
allele
Associated gene
Associated Insertion(s)
Carried in Construct
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Allele class
Nature of the Allele
Allele class
Progenitor genotype
Associated Insertion(s)
Cytology
Description
Allele components
Component
Use(s)
Mutations Mapped to the Genome
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
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Modifiers Based on Experimental Evidence ( 0 )
Disease
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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

pAbpk10109/pAbpEY11561 heterozygotes exhibit abnormalities in spermatogenesis. these include absence of meiotic cytokinesis (in 5% of cases), resulting in formation of polyploid spermatids and defects in spermatid elongation (in approximately 100% of cases). Nuclei fail to elongate, keep a round shape and are dispersed along the cyst instead of grouping at the head of the cyst. Nebenkern DAPi staining (for DNA) appears to be non-uniform in these mutants, reflecting the effect of the trans-heterozygous mutants on mitochondrial DNA organization in at least 60% of cases. There appears to be no difference between the trans-heterozygous mutant and controls, showing that mutant mitochondrial membranes keep their integrity, but in the mutant, the onion-stage Nebenkern looks larger than in controls, and its morphology differs from a perfect sphere. Examination with an electron microscope reveals abnormal mitochondrial membranes at onion-stage spermatids in the trans-heterozygous mutant. These mitochondria also exhibit defective attachment to axonemes in the elongating spermatids.

pAbpEY11561/Df(2R)Pcl7B spermatocytes show defects in meiosis; some spermatocytes have short spindles, and premature separation of centrioles is seen in some cases.

Over-expression of pAbpEY11561 reduces dendrite branching, and alters dendritic morphology in larval class IV sensory neurons (induced under the control of Scer\GAL4Act.PU). Total dendrite length is not significantly reduced in these neurons.

External Data
Interactions
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Phenotypic Class
Enhancer of
Statement
Reference
Phenotype Manifest In
Enhancer of
Statement
Reference

pAbpEY11561/pAbpEY11561 is an enhancer of testis phenotype of tut4

Additional Comments
Genetic Interactions
Statement
Reference

The severity of the tut4 mutant tumorigenic phenotype is also strongly enhanced by combination with pAbpEY11561 homozygosity, but if combined with just one copy of tut4, this genetic perturbation does not cause a significant tumor phenotype.

Xenogenetic Interactions
Statement
Reference
Complementation and Rescue Data
Comments
Images (0)
Mutant
Wild-type
Stocks (1)
Notes on Origin
Discoverer
External Crossreferences and Linkouts ( 0 )
Synonyms and Secondary IDs (1)
Reported As
Symbol Synonym
Name Synonyms
Secondary FlyBase IDs
    References (5)