Reaction: 2-epi-5-epi-valiolone = 5-epi-valiolone
For diagram of reaction click here.
Glossary: 2-epi-5-epi-valiolone= (2S,3S,4S,5R)-2,3,4,5-tetrahydroxy-5-(hydroxymethyl)cyclohexanone
5-epi-valiolone = (2R,3S,4S,5R)-2,3,4,5-tetrahydroxy-5-(hydroxymethyl)cyclohexanone
Other name(s): CetB; EVE
Systematic name: 2-epi-5-epi-valiolone 2-epimerase
Comments: The enzyme, characterized from the bacterium Actinomyces sp. Lu 9419, is involved in the biosynthesis of the antitumor agent cetoniacytone A.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc, CAS registry number:
1. Wu, X., Flatt, P.M., Xu, H. and Mahmud, T. Biosynthetic gene cluster of cetoniacytone A, an unusual aminocyclitol from the endosymbiotic Bacterium Actinomyces sp. Lu 9419. Chembiochem 10 (2009) 304-314. [PMID: 19101977]