UAS regulatory sequences drive expression of a mutated form of Grip (amino acid replacements R188A and L193A). The mutations disrupt the conserved carboxylate binding loop motif of domain PDZD 2.
lateral transverse muscle cell, with Scer\GAL4twi.PG
Larvae expressing Gripx1.Scer\UAS under the control of Scer\GAL4twi.PG show some ectopic lateral transverse muscle projections.
Scer\GAL4twi.PG/Gripx2.UAS rescues Gripex36