Phosphorylation of Ribose and Adenosine In Yeast Extracts.

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Abstract
Yeast autolysates were found to contain enzymes which catalyze the phosphorylation of ribose and of adenosine, when adenosine triphosphate is added as a phosphate donor. The enzymes, designated ribokinase and adenosine phosphokinase, were partially purified, but the best prepns. still contain large amts. of interfering enzymes, making it impossible to isolate and to identify the products of the reactions. The possible physiologic significance of the reactions is discussed.