1.14.14.104 additional information the enzyme also catalyzes the non-oxidative isomerization of the ajmaline precursor vomilenine to perakine 1.14.14.104 vinorine + [reduced NADPH-hemoprotein reductase] + O2 - 1.14.14.104 vinorine + [reduced NADPH-hemoprotein reductase] + O2 enzyme is involved in the biosynthesis of the alkaloid ajmaline