A 1365 base pair fragment from the flanking non-coding or intronic region of SerT is fused upstream of a Drosophila core synthetic promoter (DSCP) that is followed by sequence encoding a GAL4 driver.
ScerGAL4GMR50H05 drives expression in 25 serotonin positive neurons in each brain hemisphere, including a dorsal pair of neurons in the fruitless expressing PMP cluster.