A sequence cassette has been introduced into the attP site present in TI{TI}CCKLR-17D3attP, restoring the deleted CCKLR-17D3 sequence and tagging it with 2xTag:MYC. The tag is followed by a 2A-GAL4 cassette, resulting in the GAL4 driver being expressed as a separate protein under the control of the endogenous CCKLR-17D3 regulatory sequences.