A 3669 base pair fragment from the flanking non-coding or intronic region of SPR is fused upstream of a Drosophila core synthetic promoter (DSCP) that is followed by sequence encoding a GAL4 driver.
ScerGAL4GMR78G07 drives expression in the giant fiber neuron, but not in its postsynaptic target neurons; expression is observed in the developing giant fiber neuron in third instar larvae during axon outgrowth, as well as in adults.