The VT022290 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).
Comment: when combined with P{R42E06-p65.AD} (combination referred to as 'OL0203B')