FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Allele: Dmel\PatjΔ1
Open Close
General Information
Symbol
Dmel\PatjΔ1
Species
D. melanogaster
Name
FlyBase ID
FBal0280202
Feature type
allele
Associated gene
Associated Insertion(s)
Carried in Construct
Key Links
Nature of the Allele
Progenitor genotype
Associated Insertion(s)
Cytology
Description

The Patj open reading frame has been replaced by a mini-w marker.

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

Approximately 25% of homozygotes (lacking zygotic Patj function) do not hatch, approximately 25% die in early larval stages and the rest die as early pupae (metamorphosis is not initiated). Homozygous embryos derived from females containing homozygous germline clones (lacking maternal and zygotic Patj function) show nearly the same pattern of lethality as embryos lacking zygotic Patj function, but show an increased lethality in third instar larvae at the expense of dead pupae. Embryos derived from females containing homozygous germline clones mated to wild-type males develop until adulthood.

46% of homozygous embryos that die during embryogenesis have a normal cuticle, more than 30% fail to develop any cuticle and 18% have strong cuticle defects, showing a general shortening of the cuticle and head defects, while segmentation appears normal. Approximately 15% of homozygous embryos that die during embryogenesis fail to retract the germband correctly.

Homozygous follicle cell clones do not show loss of polarity or multilayering of tissue.

External Data
Interactions
Show genetic interaction network for Enhancers & Suppressors
Phenotypic Class
Enhanced by
Statement
Reference

PatjΔ1 has lethal phenotype, enhanceable by shg[+]/shgR69

Suppressed by
Statement
Reference

PatjΔ1 has lethal phenotype, suppressible | partially by MbsT541/Mbs[+]

NOT suppressed by
Statement
Reference

PatjΔ1 has lethal phenotype, non-suppressible by Scer\GAL4arm.PS/sqhAA.UASp.EGFP

Other
Statement
Reference
Phenotype Manifest In
Enhanced by
Statement
Reference
Suppressed by
Other
Statement
Reference
Additional Comments
Genetic Interactions
Statement
Reference

shgR69/+ enhances the lethality of PatjΔ1 homozygotes, with greater lethality at earlier stages. The frequency of cuticle defects seen in PatjΔ1 embryos is also enhanced by shgR69/+. Late-stage shgR69/+ ; PatjΔ1/PatjΔ1 embryos have a multilayered epidermis, many of the epidermal cells start to round up and many epidermal cells undergo apoptosis.

MbsT541/+ reduces the frequency of embryonic lethality in PatjΔ1 homozygotes from 28 to 12%. In addition, the cuticle defects seen in PatjΔ1 embryos are strongly decreased in frequency in the MbsT541/+ background. PatjΔ1/MbsT541 PatjΔ1 pupae start metamorphosis (reflected by elongation and remodelling of the wing disc).

Expression of sqhScer\UAS.P\T.T:Avic\GFP-EGFP under the control of Scer\GAL4arm.PS decreases the frequency of embryonic lethality and also decreases embryonic cuticle defects in PatjΔ1 homozygotes.

Expression of sqhAA.Scer\UAS.P\T.T:Avic\GFP-EGFP under the control of Scer\GAL4arm.PS does not the affect the lethality seen in PatjΔ1 homozygotes.

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 (2)
Reported As
Symbol Synonym
Name Synonyms
Secondary FlyBase IDs
    References (3)