UAS regulatory sequences drive expression of a mutated kirre protein that also carries a C-terminal Tag:FLAG-tag. A PDZ-binding motif "THV" at the extreme C-terminus is mutated to "GAG".
Scer\GAL4how-24B/kirrePDZ.UAS.Tag:FLAG rescues Df(1)w67k30
Expression of kirrePDZ.Scer\UAS.T:Zzzz\FLAG under the control of Scer\GAL4how-24B restores fusion competent myoblast (FCM) attraction and fusion giving rise to a wild-type dorsal muscle DA1 in Df(1)w67k30 mutant embryos.