ⓘ 5-O- 4-coumaroyl -D-quinate 3-monooxygenase. In enzymology, a 5-O--D-quinate 3-monooxygenase is an enzyme that catalyzes the chemical reaction trans-5-O-4-couma ..

                                     

ⓘ 5-O-(4-coumaroyl)-D-quinate 3-monooxygenase

In enzymology, a 5-O--D-quinate 3-monooxygenase is an enzyme that catalyzes the chemical reaction

trans-5-O-4-coumaroyl-D-quinate + NADPH + H + + O 2 ⇌ {\displaystyle \rightleftharpoons } trans-5-O-caffeoyl-D-quinate + NADP + + H 2 O

The 4 substrates of this enzyme are trans-5-O-4-coumaroyl-D-quinate, NADPH, H +, and O 2, whereas its 3 products are trans-5-O-caffeoyl-D-quinate, NADP +, and H 2 O.

This enzyme belongs to the family of oxidoreductases, specifically 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 o oxygen into the other donor. The systematic name of this enzyme class is trans-5-O-4-coumaroyl-D-quinate,NADPH:oxygen oxidoreductase 3-hydroxylating. Other names in common use include 5-O-4-coumaroyl-D-quinate/shikimate 3-hydroxylase, and coumaroylquinatecoumaroylshikimate 3-monooxygenase. This enzyme participates in phenylpropanoid biosynthesis.

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