Single base pair deletion within codon Q648, resulting in a frameshift. The resulting truncated protein is predicated to contain 648 amino acids from wild-type p followed by 39 additional amino acids. Also contains a silent base change in the P62 codon and a nucleotide change in the p upstream region (POU sequence CAAAT is changed to CCAAT).
The deletion of a single base (A) in codon Q648 causes a frameshift and early translation termination 39 aa downstream.
Mutant flies show a significant decrease in ommochrome and drosopterin pigment levels compared to wild type.
Eye colour: abnormal with reduced levels of red and brown pigment (24 and 24% of wild-type levels respectively).
Homozygous adults are hypersensitive to paraquat.
Eye colour: dull ruby with purplish tone. 40% normal red and 33% normal brown pigment
p1 has visible phenotype, non-suppressible by Scer\GAL4GMR.PS/prtUAS.cFa
p1 has abnormal eye color phenotype, non-suppressible by Scer\GAL4GMR.PS/prtUAS.cFa
p1 is an enhancer of visible phenotype of Scer\GAL4GMR.PF, aosGD16463
p1 has pigment cell phenotype, non-suppressible by Scer\GAL4GMR.PS/prtUAS.cFa
p1 is an enhancer of eye phenotype of Scer\GAL4GMR.PF, aosGD16463
The reduction in drosopterin pigment levels that is seen in p1 flies is not affected by HPS4W515X.
The reduction in drosopterin pigment levels seen in flies carrying wdsRNA.GMR is enhanced manyfold if they are also mutant for p1.
The mispatterning of the eye caused by expression of aosGD16463 under the control of Scer\GAL4GMR.PF is modestly enhanced in a p1 mutant background.
Expression of CG10251Scer\UAS.cFa under the control of Scer\GAL4GMR.PS does not rescue the eye colour phenotype of p1 flies.
p1 is rescued by pUAS.cFa/Scer\GAL4GMR.PS
Morgan, July 1910.
The p1, pp and psnb alleles have been found to have identical changes in sequence, despite being reported to have arisen independently. It seems more likely that stock contamination, mislabelling, or loss occurred some time during past handling of stocks, rather than the same lesions having occurred independently three times.