Mis-expression of shn, through expression of shn756.Scer\UAS in the entire circadian circuit through Scer\GAL4tim.PE results in a lengthening of daily activity rhythms. The addition of Scer\GAL80Pdf.PS, preventing expression in Pdf-positive cells rescues the endogenous period in Scer\GAL4tim.PE->shn756.Scer\UAS flies.
shn756 is rescued by Scer\GAL4tim.PE/shnHMS01167
Co-expression of shnHMS01167 rescues the circadian phenotype seen upon overexpression of shn756.Scer\UAS under the control of Scer\GAL4tim.PE.