UASt regulatory sequences drive expression of nucleotides 1-3291 of the aux cDNA coding region (this encodes amino acids 1-1097 of aux).
auxΔJ.UAS/Scer\GAL4Act5C.PI fails to rescue auxK47/auxD128
auxΔJ.UAS/Scer\GAL4Act5C.PI fails to rescue aux727/auxD128