D-pinitol dehydrogenase

In enzymology, a D-pinitol dehydrogenase (EC 1.1.1.142) is an enzyme that catalyzes the chemical reaction

D-pinitol dehydrogenase
Identifiers
EC no.1.1.1.142
CAS no.37250-71-8
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MetaCycmetabolic pathway
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1D-3-O-methyl-chiro-inositol + NADP+ 2D-5-O-methyl-2,3,5/4,6-pentahydroxycyclohexanone + NADPH + H+

Thus, the two substrates of this enzyme are 1D-3-O-methyl-chiro-inositol and NADP+, whereas its 3 products are 2D-5-O-methyl-2,3,5/4,6-pentahydroxycyclohexanone, NADPH, and H+.

This enzyme belongs to the family of oxidoreductases, specifically those acting on the CH-OH group of donor with NAD+ or NADP+ as acceptor. The systematic name of this enzyme class is 1D-3-O-methyl-chiro-inositol:NADP+ oxidoreductase. This enzyme is also called 5D-5-O-methyl-chiro-inositol:NADP+ oxidoreductase.

References

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  • Ruis H, Hoffmann-Ostenhof O (1969). "Enzymic epimerization of sequoyitol to D-pinitol in Trifolium incarnatum". Eur. J. Biochem. 7 (3): 442–8. doi:10.1111/j.1432-1033.1969.tb19629.x. PMID 4389340.