Encodes a truncated protein.
lethal (with kstB1-14.1)
rhabdomere | somatic clone (with kst2)
Mutant embryos hatch, but mutant pupae are present at less than 10% of the expected number, suggesting that most individuals die as larvae. There seems to be little pupal lethality and kst mutants eclose 2-4 days behind their wild-type siblings. Adult escapers are very infertile and lay few eggs. Hemizygous and kst1/kst2 adult escapers have rough eyes. The R7 photoreceptor cell is missing in many ommatidia in kst1/Df(3L)HR232 escapers. Many ommatidia are missing in the eyes of kst1/Df(3L)1226 escapers. kst1/kst2 adult escapers have wings that typically curve downwards in an "inverted spoon" shape. Hemizygous adult escapers show a visible extrusion of melanised material from the abdominal spiracles.
Homozygotes generally die as larvae. Surviving adults have defects in the eyes, wings and tracheal system.
Hemizygotes have irregular or missing facets in a region of variable size at the posterior margin of the eye. The wings show a variable degree of downward curvature and the flies tend to "leak" haemolymph, particularly through the spiracles of the abdomen.
kstB1-14.1/kst1 has lethal phenotype, enhanceable by crb11A22/crb[+]
kst[+]/kst1 is an enhancer of visible phenotype of Scer\GAL4GMR.PFa, trioUAS.cBa
kst[+]/kst1 is an enhancer of visible phenotype of Scer\GAL4GMR.PF, crbintra.UAS.Tag:MYC
kst1/kst2 has eye photoreceptor cell stalk phenotype, enhanceable by crb11A22/crb[+]
kst1/kst2 has rhabdomere | somatic clone phenotype, enhanceable by crb11A22/crb[+]
kst[+]/kst1 is an enhancer of eye phenotype of Scer\GAL4GMR.PFa, trioUAS.cBa
kst[+]/kst1 is an enhancer of eye phenotype of Scer\GAL4GMR.PF, crbintra.UAS.Tag:MYC
kst1 is a suppressor of wing vein L5 phenotype of rhove-1
kst1 is a suppressor of wing vein L2 phenotype of rhove-1
kst1 is a suppressor of wing vein L3 phenotype of rhove-1
kst1 is a suppressor of wing vein L4 phenotype of rhove-1
crb11A22, kst1/kst2 has rhabdomere | somatic clone phenotype
crb11A22, kst1/kst2 has eye photoreceptor cell stalk phenotype
crb11A22/crb[+], kst1/kst2 has rhabdomere | somatic clone phenotype
crb11A22/crb[+], kst1/kst2 has eye photoreceptor cell stalk phenotype
Heterozygosity for kst1 significantly enhances the rough-eye phenotype induced by overexpression of trioScer\UAS.cBa via Scer\GAL4GMR.PFa.