3-Epi-6-deoxocathasterone 23-monooxygenase explained

3-Epi-6-deoxocathasterone 23-monooxygenase
Ec Number:1.14.13.112

3-Epi-6-deoxocathasterone 23-monooxygenase (cytochrome P450 90C1, CYP90D1, CYP90C1) is an enzyme with systematic name 3-epi-6-deoxocathasterone,NADPH:oxygen oxidoreductase (C-23-hydroxylating).[1] This enzyme catalyses the following chemical reaction

(1) 3-epi-6-deoxocathasterone + NADPH + H+ + O2

\rightleftharpoons

6-deoxotyphasterol + NADP+ + H2O

(2) (22S,24R)-22-hydroxy-5alpha-ergostan-3-one + NADPH + H+ + O2

\rightleftharpoons

3-dehydro-6-deoxoteasterone + NADP+ + H2O

3-Epi-6-deoxocathasterone 23-monooxygenase takes part in brassinosteroid biosynthesis.

Notes and References

  1. Ohnishi T, Szatmari AM, Watanabe B, Fujita S, Bancos S, Koncz C, Lafos M, Shibata K, Yokota T, Sakata K, Szekeres M, Mizutani M . C-23 hydroxylation by Arabidopsis CYP90C1 and CYP90D1 reveals a novel shortcut in brassinosteroid biosynthesis . The Plant Cell . 18 . 11 . 3275–88 . November 2006 . 17138693 . 1693957 . 10.1105/tpc.106.045443 .

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