The Enzyme Database

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Accepted name: quinate/shikimate dehydrogenase
Reaction: (1) L-quinate + NAD(P)+ = 3-dehydroquinate + NAD(P)H + H+
(2) shikimate + NAD(P)+ = 3-dehydroshikimate + NAD(P)H + H+
For diagram of shikimate and chorismate biosynthesis, 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): YdiB
Systematic name: L-quinate:NAD(P)+ 3-oxidoreductase
Comments: This is the second shikimate dehydrogenase enzyme found in Escherichia coli and differs from EC, shikimate dehydrogenase, in that it can use both quinate and shikimate as substrate and either NAD+ or NADP+ as acceptor.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc, PDB
1.  Michel, G., Roszak, A.W., Sauvé, V., Maclean, J., Matte, A., Coggins, J.R., Cygler, M. and Lapthorn, A.J. Structures of shikimate dehydrogenase AroE and its paralog YdiB. A common structural framework for different activities. J. Biol. Chem. 278 (2003) 19463–19472. [PMID: 12637497]
2.  Benach, J., Lee, I., Edstrom, W., Kuzin, A.P., Chiang, Y., Acton, T.B., Montelione, G.T. and Hunt, J.F. The 2.3-Å crystal structure of the shikimate 5-dehydrogenase orthologue YdiB from Escherichia coli suggests a novel catalytic environment for an NAD-dependent dehydrogenase. J. Biol. Chem. 278 (2003) 19176–19182. [PMID: 12624088]
[EC created 2004]

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