UASt regulates expression of a NAT1 cDNA fragment containing the 357-4942 sequence (i.e. lacking nt 1-356 of the 5' UTR).
Scer\GAL4dpp.PU- or Scer\GAL4sca.PU-mediated expression of NAT1Scer\UAS.full does not result in scuterum or wing defects.