Sequence containing stop codons and a loxP-flanked Disc\RFP3xP3.cUa marker has been introduced into the Imp coding sequence, such that the Imp proteins produced lack the prion-like domain (PLD). The progenitor P{PTT-un}G00080 insertion is still present on the chromosome.
ImpG00080.CRISPR-ΔPLD homozygous mutant adults have polarized growth defects in some mushroom body γ neurons, with no defects in overall projection patterns of the γ neuron population, compared to controls.