The R80G12 enhancer fragment is fused upstream of the Drosophila synthetic core promoter (DSCP) followed by the p65(AD)::Zip+ hemidriver (component of a 'split driver' system, contains the p65 activation domain). A Hsp70 transcriptional terminator is present.
Comment: when combined with P{R53H03-GAL4.DBD} (combination referred to as 'MB057B')