Mutation the 8bp immediately downstream (AATCAACA to ccgaccac) of the GCAATTA motif present at -472 relative to the start codon in the Or88a promoter sequence.
ScerGAL4Or88a.486M2 is expressed in the olfactory receptor neurons of a band of trichoid sensilla that extends across the distolateral region of the antenna, and extends axons into the antennal lobe.