UAS regulatory sequences drive expression of a mutated form of Grip (amino acid replacements R87A and L92A). The mutations disrupt the conserved carboxylate binding loop motif of domain PDZD 1.
lateral transverse muscle cell, with Scer\GAL4twi.PG
Larvae expressing Gripx1.Scer\UAS under the control of Scer\GAL4twi.PG show ectopic lateral transverse muscle projections.
Scer\GAL4twi.PG/Gripx1.UAS rescues Gripex36