The R22C12 enhancer fragment 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.
Comment: when combined with P{R21D02-p65.AD} (combination referred to as 'MB399B')
when combined with PBac{R21D02-p65.AD} (combination referred to as 'MB399C')
Comment: when combined with P{R34C08-p65.AD} (combination referred to as 'LH788')