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P450-dependent monooxygenases, side-chain

Scheme 2-6. The order of the side-chain cyclization reactions performed by three P450-dependent monooxygenases (OxyA/B/C). Scheme 2-6. The order of the side-chain cyclization reactions performed by three P450-dependent monooxygenases (OxyA/B/C).
The low affinity of the AtIPTs for AMP implies that most of the natural isopentenyl riboside 5 -monophosphate (iPRMP) is formed by dephosphorylation of iPRDP and iPRTP, phosphorylation of isopentenyl riboside (iPR) by adenosine kinase, and conjugation of a phosphoribosyl moiety to iP by adenine PT [266]. Arabidopsis CYP735A1 and CYP735A2, cytocrome P450 monooxygenases, encode CK hydroxylases that catalyze tZ biosynthesis via the iPRMP-dependent pathway. The reduction of the double bond in the tZ side chain, catalyzed by a zeatin reductase, forms 6-(4-hydroxy-3-methylbutylamino)purine, whose trivial name is DZ. cZ and tZ can be enzymatically interconverted by zeatin cis-trans isomerase. [Pg.607]

See other pages where P450-dependent monooxygenases, side-chain is mentioned: [Pg.224]    [Pg.329]    [Pg.151]    [Pg.46]    [Pg.43]    [Pg.219]    [Pg.219]    [Pg.369]   


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Chain dependence

P450 monooxygenases

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