A TI{KozakGAL4} DNA cassette has been inserted into Ir7e, replacing most of the coding sequence (coordinates of deleted sequence are X:7879822..7881680 , release 6 genome, and the 3' end of the deletion is 22bp upstream of the stop codon). This results in a simultaneous knock-out of Ir7e plus a knock-in of GAL4 that is expected to be expressed under the control of the endogenous regulatory sequences of Ir7e (predicted to gene trap all annotated transcripts of the gene). The TI{KozakGAL4} cassette was inserted via the CRISPR/Cas-9 drop-in technique, using a dsDNA donor vector with homology arms of length 200bp. The sgRNA sequences used to target the gene were: GCGCTGATGTTCATCCCGCCGGG and AAAAAGTTTCCTTAAATAGATGG.