A 0.9kb fragment from immediately upstream of the Npc1b start codon is fused upstream of sequence encoding a GAL4 driver.
Expression of ScerGAL4Npc1b.PV is seen in larval midgut compartments m2 (anterior end) and m10-12 (posterior end), according to the system defined by Murakami et al., 1999 (FBrf0111439).
Npc1bUASp.cVa/Scer\GAL4Npc1b.PV rescues Npc1b1
Npc1bUASp.cVa/Scer\GAL4Npc1b.PV rescues Npc1bR9-28
Adck1UAS.cWa/Scer\GAL4Npc1b.PV fails to rescue Adck11/Adck12