Английская Википедия:(+)-abscisic acid 8'-hydroxylase
Шаблон:Short description Шаблон:Infobox enzyme
In enzymology, a (+)-abscisic acid 8'-hydroxylase (Шаблон:EC number) is an enzyme that catalyzes the chemical reaction
- (+)-abscisate + NADPH + HШаблон:Sup + OШаблон:Sub <math>\rightleftharpoons</math> 8'-hydroxyabscisate + NADPШаблон:Sup + HШаблон:SubO
The four substrates of this enzyme are (+)-abscisate, NADPH, [[hydrogen ion|HШаблон:Sup]], and [[oxygen|OШаблон:Sub]], whereas its three products are 8'-hydroxy-abscisate, [[nicotinamide adenine dinucleotide phosphate|NADPШаблон:Sup]], and [[water|HШаблон:SubO]].
This enzyme belongs to the family of oxidoreductases, to be specific those acting on paired donors, with OШаблон:Sub as oxidant and incorporation or reduction of oxygen. The oxygen incorporated need not be derived from OШаблон:Sub 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
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Шаблон:Dioxygenases Шаблон:Enzymes Шаблон:Portal bar
