A 2833 base pair fragment from the flanking non-coding or intronic region of Lkr is fused upstream of a Drosophila core synthetic promoter (DSCP) followed by sequence encoding a lexA::p65 driver. The driver sequence has been optimized for Drosophila codon usage. An Hsp70 transcriptional terminator is present.
EcollexA[GMR65C07] drives expression in neurons whos projections intermingle with neurons with expression driven by ScerGAL4121Y, ScerGAL4cv-c-C5 or ScerGAL4c584 in the fan-shaped body.