PHOSPHORYLATION OF CELLOBIOSE AND GLUCOSE BY RUMINOCOCCUS FLAVEFACIENS

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Abstract
Dried cell and cell-free enzyme preparations from R. flavefaciens show an uptake of inorganic phosphate in the presence of cellobiose with the accumulation of a mixture of phosphorylated hexoses. Glucose is esterified by enzyme preparations without significant phosphate uptake, even though living cells do not ferment glucose. The data suggest that a cellobiose phosphorylase and glucokinase are present and that a specific permease for glucose is absent in living cells.

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