FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Allele: Dmel\PpVX9
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General Information
Symbol
Dmel\PpVX9
Species
D. melanogaster
Name
FlyBase ID
FBal0356183
Feature type
allele
Associated gene
Associated Insertion(s)
Carried in Construct
Key Links
Genomic Maps

Nature of the Allele
Progenitor genotype
Cytology
Description

Amino acid replacement: W7term.

Mutations Mapped to the Genome
Curation Data
Type
Location
Additional Notes
References
Nucleotide change:

G6372797A

Reported nucleotide change:

G?A

Amino acid change:

W7term | PpV-PA; W7term | PpV-PB; W7term | PpV-PC; W7term | PpV-PD

Reported amino acid change:

W7term

Comment:

Nonsense mutation (TGG to TAG) at Trp codon.

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

PpVX9 germline clones exhibit nurse cell degeneration at stages 9-10 of oogenesis, although follicle cell clones do not show changes in cell number, as compared to control clones.

Eggs derived from PpVX9 germline clones have apparently normal shape and size but about half of them stop development at the preblastoderm stage, with mitotic defects and mitotic arrest: the nuclei number frequently deviates from the power basis 2; nuclear envelopes lack the LaminDm0 marker, and there are multiple unusually large nuclei. The surviving syncytial embryos frequently undergo an extra nuclear division cycle, despite of unperturbed cell cycle length and decreased nuclei number and density; there is frequent chromosome mis-segregation and chromosome bridges; aborted cytokinesis events, with the resulting nuclei not fully decondensing and undergoing nuclear fall-out in the following interphase; astral microtubules are frequently undetected or less prominent than controls, despite normal spindle assembly/disassembly; there are no defects in centrosome duplication and positioning, centromere number and nuclear envelope dynamics. Part of the surviving embryos fail to extend the germband, although there are no A-P patterning defects. Some embryos survive beyond the blastoderm stage until the end of embryogenesis, form normal cuticle, but fail to hatch.

The progeny of PpVX9 heterozygous mothers and control fathers exhibit some mortality during the embryonic, larval and Pupal stages, as compared to controls.

PpVX9 somatic clones in the wing are observed as frequently as control clones.

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

PpVX9 germline clonal egg chambers in trblEP1119 females display multiple defects including disorganized egg chambers and egg chambers with an increased number of nurse cells.

Xenogenetic Interactions
Statement
Reference
Complementation and Rescue Data
Rescued by
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 (2)