UASt regulatory sequences drive expression of a modified form of Ppt1 carrying the amino acid substitution S123A.
rhabdomere of eye photoreceptor cell, with Scer\GAL4GMR.PF
Over-expression of Ppt1S123A.Scer\UAS in the eye under the control of Scer\GAL4GMR.PF slightly decreases the number of rhabdomeres per ommatidia compared to control lines.