UASt regulatory sequences drive expression of an inverted repeat.
The expression of Sar1GD10593 under the control of Scer\GAL4ppk.PU leads to ddaC neurons showing significantly simplified dendrite arbors with fewer dendritic termini in white pre-pupae and showing strong pruning defects in pupae (16h APF).
Knockdown of Sar1 in the fat body, through expression of Sar1GD10593 under the control of Scer\GAL4Cg.PA causes retention of Avic\GFPvkg-G454 in fat body cells. Avic\GFPvkg-G454 accumulates in growing intracellular aggregates. These eventually coalesce and occupy most of the cytoplasm between the lipid droplets, affecting cell viability. These larvae lack Avic\GFPvkg-G454 in the basement membranes of other organs, such as the wing disc.
Larvae expressing sar1GD10593 under the control of Scer\GAL4Mef2.PR show sarcomere defects. The larvae are also shorter in length than control larvae.
Adults expressing Sar1GD10593 under the control of Scer\GAL4elav.PLu (in the presence of Dcr-2Scer\UAS.cDa to increase the efficiency of RNAi) do not show a significant defect in avoidance of noxious temperature (46[o]C) compared to control flies.
Expression under the control of Scer\GAL4Mef2.PR results in late larval lethality.
Expression under the control of Scer\GAL4Mef2.PR results in grossly normal larval body wall muscles.
Expression under the control of Scer\GAL4Mef2.PR results in sarcomeres with reduced Z-lines in the larval body wall muscles.
Expression under the control of Scer\GAL4pnr-MD237 results in lethality before the pupal stage.
The sarcomere defects and growth defects seen in larvae expressing sar1GD10593 under the control of Scer\GAL4Mef2.PR are completely rescued if they are carrying the P{FlyFos-045459} construct (which contains D. pseudoobscura pseudoobscura fosmid sequence that includes the region orthologous to sar1).