IUBMB Enzyme Nomenclature


Accepted name: 2,3-epoxybenzoyl-CoA dihydrolase

Reaction: 2,3-epoxy-2,3-dihydrobenzoyl-CoA + 2 H2O = 3,4-didehydroadipyl-CoA semialdehyde + formate

For diagram of reaction click here and mechanism click here.

Other name(s): 2,3-dihydro-2,3-dihydroxybenzoyl-CoA lyase/hydrolase (deformylating); BoxC; dihydrodiol transforming enzyme; benzoyl-CoA oxidation component C; 2,3-dihydro-2,3-dihydroxybenzoyl-CoA 3,4-didehydroadipyl-CoA semialdehyde-lyase (formate-forming); benzoyl-CoA-dihydrodiol lyase (incorrect); 2,3-dihydro-2,3-dihydroxybenzoyl-CoA 3,4-didehydroadipyl-CoA-semialdehyde-lyase (formate-forming)

Systematic name: 2,3-epoxy-2,3-dihydrobenzoyl-CoA 3,4-didehydroadipyl-CoA-semialdehyde-lyase (formate-forming)

Comments: The enzyme is involved in the aerobic benzoyl-CoA catabolic pathway of the bacterium Azoarcus evansii. The enzyme converts 2,3-epoxy-2,3-dihydroxybenzoyl-CoA to its oxepin form prior to the ring-opening and the formation of a dialdehyde intermediate.

Links to other databases: BRENDA, EAWAG-BBD, EXPASY, KEGG, MetaCyc, CAS registry number:


1. Gescher, J., Eisenreich, W., Worth, J., Bacher, A. and Fuchs, G. Aerobic benzoyl-CoA catabolic pathway in Azoarcus evansii: studies on the non-oxygenolytic ring cleavage enzyme. Mol. Microbiol. 56 (2005) 1586-1600. [PMID: 15916608]

2. Rather, L.J., Knapp, B., Haehnel, W. and Fuchs, G. Coenzyme A-dependent aerobic metabolism of benzoate via epoxide formation. J. Biol. Chem. 285 (2010) 20615-20624. [PMID: 20452977]

[EC created 2010, modified 2015]

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