UASt regulatory sequences drive expression of an inverted repeat.
Expression with P{GAL4-tim.E}27, in the presence of Dcr-2Scer\UAS.cDa, results in lethality.
Expression via P{cry-GAL4.Z}17 (in the presence of Dcr-2Scer\UAS.cDa) results in a reduction in the 'rhythmic strength' value of flies classified as rhythmic.