The GMR61G12 regulatory region is fused upstream of a Drosophila synthetic core promoter (DSCP) followed by sequence encoding a p65(AD)::Zip+ hemidriver.
The GMR18F07 enhancer fragment followed by the Drosophila synthetic core promoter (DSCP) is fused upstream of the GAL4(DBD)::Zip- hemidriver (component of the 'Split GAL4' system, contains the GAL4 DNA-binding domain).