(+)-abscisic acid 8'-hydroxylase

Class of enzymes (+)-abscisic acid 8'-hydroxylase 1.14.13.93 153190-37-5 0010295 In enzymology, a (+)-abscisic acid 8'-hydroxylase (1.14.13.93) is an enzyme that catalyzes the chemical reaction (+)-abscisate + NADPH + H+ + O2 8'-hydroxyabscisate + NADP+ + H2O The four substrates of this enzyme are (+)-abscisate, NADPH, H+, and O2, whereas its three products are 8'-hydroxy-abscisate, NADP+, and H2O. This enzyme belongs to the family of oxidoreductases, to be specific those acting on paired donors, with O2 as oxidant and incorporation or reduction of oxygen. The oxygen incorporated need not be derived from O2 with NADH or NADPH as one donor, and incorporation of one atom of oxygen into the other donor. This enzyme participates in carotenoid biosynthesis. Nomenclature The systematic name of this enzyme class is abscisate,NADPH:oxygen oxidoreductase (8'-hydroxylating). Other names in common use include (+)-ABA 8'-hydroxylase and ABA 8'-hydroxylase. References 30em Cutler AJ, Squires TM, Loewen MK, Balsevich JJ 1997 Induction of (+)-abscisic acid 8' hydroxylase by (+)-abscisic acid in cultured maize cells J. Exp. Bot. 48 10 1787–1795 10.1093/jxb/48.10.1787 free Krochko JE, Abrams GD, Loewen MK, Abrams SR, Cutler AJ 1998 (+)-Abscisic acid 8'-hydroxylase is a cytochrome P450 monooxygenase Plant Physiol. 118 849–60 9808729 10.1104/pp.118.3.849 3 34795 Biology no Category:EC 1.14.13 Category:NADPH-dependent enzymes Category:Enzymes of unknown structure