Abstract
Summary
Yeast autolysates have been found to contain enzymes which catalyze the phosphorylation of ribose and of adenosine, when ATP is added as a phosphate donor. The enzymes, designated ribokinase and adenosine phosphokinase, have been partially purified, but the best preparations still contain large amounts of interfering enzymes, making it impossible to isolate and to identify the products of the reactions. The possible physiological significance of the reactions is discussed.
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