UAS regulatory sequences drive expression of a pyd cDNA lacking exon 6. It includes one amino acid change from pyd-PC, substituting a lysine for an arginine residue at amino acid 790. The protein is tagged with the mRFP1 fluorescent protein.
Expression of pydexon6-.Scer\UAS.T:Disc\RFP under the control of Scer\GAL4GMR.PF results in inter-ommatidial precursor cell patterning defects.