Insertion in the 5' UTR, 41bp upstream of the ATG codon.
Homozygous third instar larvae occasionally have melanotic tumours. Homozygotes show developmental delay (puparium formation is delayed relative to wild type) and highly penetrant early pupal lethality. Imaginal discs are missing in homozygous larvae.
Aos1c06048/Df(3R)ED5554 and Aos1c06048/Df(3R)ED5591 animals show loss of imaginal discs and pupal lethality.
Homozygous clones in the wing disc are small, fragmented and show high levels of cell death 3 days after clone induction. The defects in growth and viability of homozygous clones are not rescued if the clones are induced in a Minute background.
Cells in homozygous clones in the imaginal discs accumulate in G2/M of the cell cycle. EdU incorporation in the salivary glands of mutant early third instar larvae appears normal.
Aos1c06048 has increased cell death | somatic clone | third instar larval stage phenotype, suppressible by Scer\GAL4Act.PU/BacA\p35UAS.cHa
Aos1c06048 has decreased cell number | somatic clone | third instar larval stage phenotype, non-suppressible by Scer\GAL4Act.PU/BacA\p35UAS.cHa
Expression of BacA\p35Scer\UAS.cHa under the control of Scer\GAL4Act.PU in homozygous Aos1c06048 clones in the wing disc suppresses the increased cell death seen in these clones, but does not rescue the growth defect, as the double mutant clones are still smaller in size than control clones. The rescued cells appear significantly larger than control cells are are partially extruded from the epithelial layer, leaving only one or two thin membraneous processes attached to the apical epithelial surface.
Aos1c06048 is rescued by Aos1+t2.9
Aos1c06048 is rescued by Aos1UAS.cKa/Scer\GAL4Act.PU
Expression of Aos1Scer\UAS.cKa under the control of Scer\GAL4Act.PU in the clone rescues the cell lethality of Aos1c06048 clones.
Precise excision of the insertion reverts the mutant phenotype.