The Enzyme Database

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EC 1.1.1.330     
Accepted name: very-long-chain 3-oxoacyl-CoA reductase
Reaction: a very-long-chain (3R)-3-hydroxyacyl-CoA + NADP+ = a very-long-chain 3-oxoacyl-CoA + NADPH + H+
Glossary: a very-long-chain acyl-CoA = an acyl-CoA thioester where the acyl chain contains 23 or more carbon atoms.
Other name(s): very-long-chain 3-ketoacyl-CoA reductase; very-long-chain β-ketoacyl-CoA reductase; KCR (gene name); IFA38 (gene name)
Systematic name: (3R)-3-hydroxyacyl-CoA:NADP+ oxidoreductase
Comments: The second component of the elongase, a microsomal protein complex responsible for extending palmitoyl-CoA and stearoyl-CoA (and modified forms thereof) to very-long-chain acyl CoAs. The enzyme is active with substrates with chain length of C16 to C34, depending on the species. cf. EC 2.3.1.199, very-long-chain 3-oxoacyl-CoA synthase, EC 4.2.1.134, very-long-chain (3R)-3-hydroxyacyl-[acyl-carrier protein] dehydratase, and EC 1.3.1.93, very-long-chain enoyl-CoA reductase.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc
References:
1.  Beaudoin, F., Gable, K., Sayanova, O., Dunn, T. and Napier, J.A. A Saccharomyces cerevisiae gene required for heterologous fatty acid elongase activity encodes a microsomal β-keto-reductase. J. Biol. Chem. 277 (2002) 11481–11488. [PMID: 11792704]
2.  Han, G., Gable, K., Kohlwein, S.D., Beaudoin, F., Napier, J.A. and Dunn, T.M. The Saccharomyces cerevisiae YBR159w gene encodes the 3-ketoreductase of the microsomal fatty acid elongase. J. Biol. Chem. 277 (2002) 35440–35449. [PMID: 12087109]
3.  Beaudoin, F., Wu, X., Li, F., Haslam, R.P., Markham, J.E., Zheng, H., Napier, J.A. and Kunst, L. Functional characterization of the Arabidopsis β-ketoacyl-coenzyme A reductase candidates of the fatty acid elongase. Plant Physiol. 150 (2009) 1174–1191. [PMID: 19439572]
[EC 1.1.1.330 created 2012]
 
 


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