What is "premnaspirodiene oxygenase"

n. (context enzyme English) An enzyme that catalyzes the chemical reaction ''(-)-vetispiradiene + 2 NADPH + 2 H⁺ + 2 O₂ $rightleftharpoons$ solavetivone + 2 NADP⁺ + 3 H₂O''.

Premnaspirodiene oxygenase (, HPO, Hyoscymus muticus premnaspirodiene oxygenase) is an enzyme with systematic name -vetispiradiene,NADPH:oxygen 2alpha-oxidoreductase. This enzyme catalyses the following chemical reaction

-vetispiradiene + 2 NADPH + 2 H + 2 O$\rightleftharpoons$ solavetivone + 2 NADP + 3 HO (overall reaction) (1a) -vetispiradiene + NADPH + H + O$\rightleftharpoons$ solavetivol + NADP + HO (1b) solavetivol + NADPH + H + O$\rightleftharpoons$ solavetivone + NADP + 2 HO

Premnaspirodiene oxygenase heme- thiolate protein (P-450).