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- ArticleCohn MS, Tabor CW, Tabor H.J Biol Chem. 1977 Nov 25;252(22):8212-6.S-Adenosylmethionine decarboxylase from Saccharomyces cerevisiae has been purified to homogeneity. Acid hydrolysis of NaB3H4-reduced enzyme released 2.2 mol of tritiated lactate per mol of dimeric enzyme, indicating that a pyruvate moiety is present. Inhibition of enzymatic activity by NaBH4 reduction and by carbonyl-binding reagents indicates that this pyruvoyl residue is required for the activity of the enzyme. This is the first example reported of a eukaryotic enzyme containing a covalently linked pyruvoyl residue.
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