ort promoter sequences containing conserved region C2 are fused upstream of sequences encoding a GAL4(DBD)::Zip- hemidriver (component of the 'Split GAL4' system, contains the GAL4 DNA-binding domain).
The P{GawB} element present in the progenitor insertion has been replaced with a P{dVP16AD} element.
In a split-GAL4 system, ScerGAL4DBD.ort.C2 drives expression in distal medullary amacrine neuron Dm8 from stage 50% APF when combined with HsimVP16AD-VGlut-OK371.