Comment: Expression is observed in tissue surrounding the mouth hook.
Expression was first seen in 12-14hr old first instar larvae. Expression was detected by X-gal histochemistry in DN2, but not DN1, in L2 larvae. Throughout larval development, expression is seen in cells which do not cycle per found in the ventral region of the brain.
The phase of the morning activity peak of flies carrying perSG.T:Ecol\lacZ in a per+ background is similar to that of wild-type controls, while the phase of the evening activity peak is significantly different, being earlier than wild-type controls, when flies are kept under 12 hour light/12 hour dark cycling conditions. The free-running locomotor activity periods of flies carrying perSG.T:Ecol\lacZ kept under DD conditions are significantly shorter than wild-type controls, and only 70-80% of the flies are rhythmic under these conditions.
Has little or no effect on circadian locomotor activity rhythms in a per+ background.
perSG.lacZ fails to rescue per01
perSG.lacZ fails to rescue per01
Fails to restore the missing locomotor activity rhythms of per01 flies.
perSG.T:Ecol\lacZ RNA and protein cycling in per+ and per01 flies has been studied.
Used, in comparison with Ecol\lacZper.NG and per1.T:Ivir\HA1 to demonstrate homotypic interactions of per protein in vivo.