The VT009792 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).
The VT002021 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).
In a split-GAL4 system, HsapRELAAD.VT009792 drives expression in lobula columnar neuron LC25 and a subset of neurons in the thoracico-abdominal ganglion when combined with ScerGAL4DBD.VT002021.