Mannoheptulose is a heptose, a monosaccharide with seven carbon atoms, and a ketose, with the characteristic carbonyl group of the carbohydrate present on a secondary carbon (functioning as a ketone group). The sugar alcohol form of mannoheptulose is known as perseitol.
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Mannoheptulose is a heptose, a monosaccharide with seven carbon atoms, and a ketose, with the characteristic carbonyl group of the carbohydrate present on a secondary carbon (functioning as a ketone group). The sugar alcohol form of mannoheptulose is known as perseitol.
==Inhibition of hexokinases== Mannoheptulose is a competitive and non-competitive inhibitor of both hexokinase and the related liver isozyme glucokinase. By blocking the enzyme hexokinase, it prevents glucose phosphorylation, the first step in the fundamental biochemical pathway of glycolysis. As a result, the breakdown of glucose is inhibited.
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