A 1kb Gr97a promoter fragment is fused upstream of sequence encoding a GAL4 driver.
ScerGAL4Gr97a.1 drives expression in one gustatory receptor neuron of the larval terminal organ. This neuron also expresses ScerGAL4Gr33a.4.7, ScerGAL4Gr66a.1.8 and ScerGAL4Gr57a.6.