UASt regulatory sequences drive expression of an inverted repeat.
Expression of dre4KK100787 results in: no wings phenotype with the Scer\GAL4nub.PK driver and lethality with any of the following: Scer\GAL4Act5C.PI, Scer\GAL4ey.PH or Scer\GAL4en.PU. Expression controlled by Scer\GAL4GMR.PF has no overt adult phenotype.