UAS regulatory sequences drive expression of gogo lacking the YYD motif in the C2 cytoplasmic domain.
abnormal neuroanatomy, with Scer\GAL4GMR.PF
photoreceptor cell R8, with Scer\GAL4GMR.PF
Expression of gogoΔYYD.Scer\UAS under the control of Scer\GAL4GMR.PF results in premature stopping of R8 axons at the M1 medulla layer. Targeting of R7 neurons is normal.