Flies expressing cycScer\UAS.T:Hsim\VP16 under the control of Scer\GAL4tim.PE are robustly rhythmic in a circadian locomotor assay, with approximately 22 hour periods (approximately 2 hours shorter than those of controls).
Flies expressing cycScer\UAS.T:Hsim\VP16 under the control of either Scer\GAL4P2.4.Pdf, Scer\GAL4elav-C155 or Scer\GAL4Act.PU are rhythmic in a circadian locomotor assay and the period is shorter than that of controls in each case.
cycVP16.UAS/Scer\GAL4tim.PE is a suppressor of abnormal locomotor rhythm phenotype of Clkar
Co-expression of cycScer\UAS.T:Hsim\VP16 and Dcr-1VDRC.cUa under the control of Scer\GAL4tim.PE at 29[o]C results in adults in which the amplitude of the locomotor activity rhythms is dramatically reduced compared to controls.
Expression of cycScer\UAS.T:Hsim\VP16 under the control of Scer\GAL4tim.PE fails to rescue circadian locomotor activity rhythms in Clkar flies under constant darkness conditions, but in light-dark conditions most of the abnormal features of locomotor activity seen in Clkar flies are rescued (higher diurnal rather than night activity as well as the lights-on startle response is restored).
Expression of cycScer\UAS.T:Hsim\VP16 under the control of Scer\GAL4elav-C155 in a per01, perScer\UAS.cYa background only shortens the circadian locomotor activity period by 20 minutes, in contrast to the shortening of 2 hours seen when cycScer\UAS.T:Hsim\VP16 is expressed under the control of Scer\GAL4elav-C155 in a wild-type background.