IUBMB Enzyme Nomenclature


Accepted name: medium-chain-enoyl-CoA hydratase

Reaction: a medium-chain (3S)-3-hydroxyacyl-CoA = a medium-chain trans-2-enoyl-CoA + H2O

Glossary: a medium-chain acyl-CoA = an acyl-CoA thioester where the acyl chain contains 6 to 12 carbon atoms.

Other name(s): long-chain enoyl coenzyme A hydratase (incorrect); long-chain-enoyl-CoA hydratase (incorrect); long-chain-(3S)-3-hydroxyacyl-CoA hydro-lyase (incorrect)

Systematic name: medium-chain-(3S)-3-hydroxyacyl-CoA hydro-lyase

Comments: Acts in the reverse direction. The best substrate for the porcine enzyme is oct-2-enoyl-CoA. Unlike EC enoyl-CoA hydratase, it does not act on crotonoyl-CoA.

Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc, CAS registry number: 62009-81-8


1. Fong, J.C. and Schulz, H. Purification and properties of pig heart crotonase and the presence of short chain and long chain enoyl coenzyme A hydratases in pig and guinea pig tissues. J. Biol. Chem. 252 (1977) 542-547. [PMID: 833142]

2. Schulz, H. Long chain enoyl coenzyme A hydratase from pig heart. J. Biol. Chem. 249 (1974) 2704-2709. [PMID: 4828315]

3. Arent, S., Christensen, C.E., Pye, V.E., Norgaard, A. and Henriksen, A. The multifunctional protein in peroxisomal β-oxidation: structure and substrate specificity of the Arabidopsis thaliana protein MFP2. J. Biol. Chem. 285 (2010) 24066-24077. [PMID: 20463021]

[EC created 1981, modified 2022]

Return to EC 4.2.1 home page
Return to EC 4.2 home page
Return to EC 4 home page
Return to Enzymes home page
Return to IUBMB Biochemical Nomenclature home page