Reaction: L-quinate + NAD+ = 3-dehydroquinate + NADH + H+
For diagram of rection, click here
Glossary: quinate = (1R,3R,4R,5R)-1,3,4,5-tetrahydroxycyclohexanecarboxylic acid and is a cyclitol carboxylate
The numbering system used for the 3-dehydroquinate is that of the recommendations on cyclitols, sections I-8 and I-9: and is shown in the reaction diagram. The use of the term '5-dehydroquinate' for this compound is based on an earlier system of numbering.
Other name(s): quinate dehydrogenase (ambiguous); quinic dehydrogenase (ambiguous); quinate:NAD oxidoreductase; quinate 5-dehydrogenase (ambiguous); quinate:NAD+ 5-oxidoreductase
Systematic name: L-quinate:NAD+ 3-oxidoreductase
Comments: The enzyme, found mostly in bacteria (mostly, but not exclusively in Gram-positive bacteria), fungi, and plants, participates in the degradation of quinate and shikimate with a strong preference for NAD+ as a cofactor. While the enzyme can act on both quinate and shikimate, activity is higher with the former. cf. EC 126.96.36.199, quinate/shikimate dehydrogenase (quinone), EC 188.8.131.522, quinate/shikimate dehydrogenase [NAD(P)+], and EC 184.108.40.206, shikimate dehydrogenase (NADP+).
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc, CAS registry number: 9028-28-8
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