IUBMB Enzyme Nomenclature


Accepted name: chorismatase

Reaction: chorismate + H2O = (4R,5R)-4,5-dihydroxycyclohexa-1(6),2-diene-1-carboxylate + pyruvate

For diagram of reaction, click here

Glossary: chorismate = (3R,4R)-3-[(1-carboxyethenyl)oxy]-4-hydroxycyclohexa-1,5-diene-1-carboxylate

Other name(s): chorismate/3,4-dihydroxycyclohexa-1,5-dienoate synthase; fkbO (gene name); rapK (gene name)

Systematic name: chorismate pyruvate-hydrolase

Comments: The enzyme found in several bacterial species is involved in the biosynthesis of macrocyclic polyketides.

Links to other databases: BRENDA, EXPASY, KEGG, Metacyc, PDB, CAS registry number:


1. Andexer, J.N., Kendrew, S.G., Nur-e-Alam, M., Lazos, O., Foster, T.A., Zimmermann, A.S., Warneck, T.D., Suthar, D., Coates, N.J., Koehn, F.E., Skotnicki, J.S., Carter, G.T., Gregory, M.A., Martin, C.J., Moss, S.J., Leadlay, P.F. and Wilkinson, B. Biosynthesis of the immunosuppressants FK506, FK520, and rapamycin involves a previously undescribed family of enzymes acting on chorismate. Proc. Natl. Acad. Sci. USA 108 (2011) 4776-4781. [PMID: 21383123]

2. Juneja, P., Hubrich, F., Diederichs, K., Welte, W. and Andexer, J.N. Mechanistic implications for the chorismatase FkbO based on the crystal structure. J. Mol. Biol. (2013) . [PMID: 24036425]

[EC created 2013]

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