The Enzyme Database

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Accepted name: 2-methylene-furan-3-one reductase
Reaction: 4-hydroxy-2,5-dimethylfuran-3(2H)-one + NAD(P)+ = 4-hydroxy-5-methyl-2-methylenefuran-3(2H)-one + NAD(P)H + H+
Other name(s): FaEO; SIEO; enone oxidoreductase
Systematic name: 4-hydroxy-2,5-dimethylfuran-3(2H)-one:NAD(P)+ oxidoreductase
Comments: In the fruit-ripening process of strawberry (Fragaria x ananassa) the reaction is catalysed in the reverse direction from that shown. 4-hydroxy-2,5-dimethylfuran-3(2H)-one is one of the major aroma compounds in the fruits. The enzyme has also been detected in tomato (Solanum lycopersicum) fruits [2]. NADPH is the preferred cofactor.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc
1.  Raab, T., Lopez-Raez, J.A., Klein, D., Caballero, J.L., Moyano, E., Schwab, W. and Munoz-Blanco, J. FaQR, required for the biosynthesis of the strawberry flavor compound 4-hydroxy-2,5-dimethyl-3(2H)-furanone, encodes an enone oxidoreductase. Plant Cell 18 (2006) 1023–1037. [PMID: 16517758]
2.  Klein, D., Fink, B., Arold, B., Eisenreich, W. and Schwab, W. Functional characterization of enone oxidoreductases from strawberry and tomato fruit. J. Agric. Food Chem. 55 (2007) 6705–6711. [PMID: 17636940]
3.  Schiefner, A., Sinz, Q., Neumaier, I., Schwab, W. and Skerra, A. Structural basis for the enzymatic formation of the key strawberry flavor compound 4-hydroxy-2,5-dimethyl-3(2H)-furanone. J. Biol. Chem. 288 (2013) 16815–16826. [PMID: 23589283]
[EC created 2013]

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