1357bp of sequence from upstream of the ort transcription start site regulates expression of a GAL4 driver.
ort promoter sequences containing conserved region C2 are fused upstream of GAL4.
ScerGAL4ort.C2 drives expression in Dm8 and L1-L3 histamine receptor-expressing neurons.
ScerGAL4ort.C2 is expressed in ocellar postsynaptic L-type interneurons.