Reaction: quinate + quinone = 3-dehydroquinate + quinol
For diagram of reaction 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): NAD(P)+-independent quinate dehydrogenase; quinate:pyrroloquinoline-quinone 5-oxidoreductase; quinate dehydrogenase (quinone)
Systematic name: quinate:quinol 3-oxidoreductase
Comments: The enzyme is membrane-bound. Does not use NAD(P)+ as acceptor. Contains pyrroloquinoline-quinone. cf. EC 126.96.36.199, quinate/shikimate dehydrogenase (NAD+), 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: 115299-99-5
1. van Kleef, M.A.G. and Duine, J.A. Bacterial NAD(P)-independent quinate dehydrogenase is a quinoprotein. Arch. Microbiol. 150 (1988) 32-36. [PMID: 3044290]
2. Adachi, O., Tanasupawat, S., Yoshihara, N., Toyama, H. and Matsushita, K. 3-Dehydroquinate production by oxidative fermentation and further conversion of 3-dehydroquinate to the intermediates in the shikimate pathway. Biosci. Biotechnol. Biochem. 67 (2003) 2124-2131. [PMID: 14586099]
3. Vangnai, A.S., Toyama, H., De-Eknamkul, W., Yoshihara, N., Adachi, O. and Matsushita, K. Quinate oxidation in Gluconobacter oxydans IFO3244: purification and characterization of quinoprotein quinate dehydrogenase. FEMS Microbiol. Lett. 241 (2004) 157-162. [PMID: 15598527]