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Information on EC 1.1.1.303 - diacetyl reductase [(R)-acetoin forming]

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EC Tree
IUBMB Comments
The reaction is catalysed in the reverse direction. This activity is usually associated with butanediol dehydrogenase activity (EC 1.1.1.4 or EC 1.1.1.76). While the butanediol dehydrogenase activity is reversible, diacetyl reductase activity is irreversible. This enzyme has been reported in the yeast Saccharomyces cerevisiae [1,2]. Different from EC 1.1.1.304, diacetyl reductase [(S)-acetoin forming].
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The expected taxonomic range for this enzyme is: Bacteria, Eukaryota, Archaea
Reaction Schemes
Synonyms
(R,R)-BDH, (R,R)-butane-2,3-diol dehydrogenase, (R,R)-butanediol dehydrogenase/diacetyl reductase, acetoin/diacetyl reductase, BdhA, DAR, dudA, EC 1.1.1.5, gutB, More, more
REACTION
REACTION DIAGRAM
COMMENTARY hide
ORGANISM
UNIPROT
LITERATURE
(R)-acetoin + NAD+ = diacetyl + NADH + H+
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PATHWAY SOURCE
PATHWAYS