Stereochemistry of the Reduction Step Mediated by Recombinant 1-Deoxy-d-xylulose 5-Phosphate Isomeroreductase
Organic Letters1999Vol. 1(6), pp. 921–923
Citations Over TimeTop 18% of 1999 papers
Abstract
[formula: see text] The stereochemistry of the 1-deoxy-D-xylulose 5-phosphate (DXP) isomeroreductase reduction step has been examined using the recombinant enzyme from Synechocystis sp. PCC6803. Using [3-2H]DXP and [4S-2H]NADPH, it has been determined that the C1 pro-S hydrogen in the 2-C-methyl-D-erythritol 4-phosphate product derives from C3 of DXP, indicating that hydride attack occurs on the re face of the intermediate aldehyde. The 4S-hydride from NADPH is delivered, assigning this enzyme as a class B dehydrogenase.
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