UAS regulatory sequences drive expression of a mutant form of hh in which the lysine at amino acid 1232 has been replaced by aspartic acid. CFP has been inserted at position 255, adjacent to the conserved GCF triad.
hhK132D.UAS.CFP/Scer\GAL4vg.PM fails to rescue hhts2
Expression of hhK132D.Scer\UAS.T:Avic\GFP-CFP under the control of Scer\GAL4vg.PM is unable to rescue the lethality seen in homozygous hhts2 mutant flies grown at the restrictive temperature.