cDNA sequence nucleotides 589-1413 (FBrf0050626) is expressed from UASt regulatory sequences. This includes coding sequence for the N-terminal 272 amino acids which encompasses the first transmembrane domain and the first two residues of the first intracellular loop, and was put in frame with a heterologous RWL peptide followed by a stop codon. Contains 9 nucleotides of 5' UTR.