The 'HL9' promoter region, corresponding to P{Ddc-GAL4.HL9}, is fused upstream of the Drosophila synthetic core promoter (DSCP) followed by the GAL4(DBD)::Zip- hemidriver (component of the 'Split GAL4' system, contains the GAL4 DNA-binding domain). A Hsp70 transcriptional terminator is present.
Split-GAL4 transgene, constructed as described in FBrf0212052.