A TI{KozakGAL4} DNA cassette has been inserted into CG13334, replacing the coding sequence (coordinates of deleted sequence are 2R:13558566..13559732 , release 6 genome). This results in a simultaneous knock-out of CG13334 plus a knock-in of GAL4 that is expected to be expressed under the control of the endogenous regulatory sequences of CG13334 (predicted to gene trap all annotated transcripts of the gene). The TI{KozakGAL4} cassette was inserted via the CRISPR/Cas-9 drop-in technique. The sgRNA sequences used to target the gene were: TGAAACCGAAAAAGGAATACTGG and TGAGCTACTGAAGAATTCTATGG.