IUBMB Enzyme Nomenclature


Accepted name: acrylyl-CoA reductase (NADPH)

Reaction: propanoyl-CoA + NADP+ = acryloyl-CoA + NADPH + H+

For diagram of reaction click here (another example and another example).

Glossary: acrylyl-CoA = acryloyl-CoA
propanoyl-CoA = propionyl-CoA

Systematic name: propanoyl-CoA:NADP+ oxidoreductase

Comments: Catalyses a step in the 3-hydroxypropanoate/4-hydroxybutanoate cycle, an autotrophic CO2 fixation pathway found in some thermoacidophilic archaea [1]. The enzyme from Sulfolobus tokodaii does not act on either NADH or crotonyl-CoA [2]. Different from EC, which acts only on enoyl-CoA derivatives of carbon chain length 4 to 16. Contains Zn2+.

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


1. Berg, I.A., Kockelkorn, D., Buckel, W. and Fuchs, G. A 3-hydroxypropionate/4-hydroxybutyrate autotrophic carbon dioxide assimilation pathway in Archaea. Science 318 (2007) 1782-1786. [PMID: 18079405]

2. Teufel, R., Kung, J.W., Kockelkorn, D., Alber, B.E. and Fuchs, G. 3-hydroxypropionyl-coenzyme A dehydratase and acryloyl-coenzyme A reductase, enzymes of the autotrophic 3-hydroxypropionate/4-hydroxybutyrate cycle in the Sulfolobales. J. Bacteriol. 191 (2009) 4572-4581. [PMID: 19429610]

[EC created 2009]

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