pyrophosphatase

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pyrophosphatase

[‚pī·rō′fä·sfə‚tās]
(biochemistry)
An enzyme catalyzing hydrolysis of esters containing two or more molecules of phosphoric acid to form a simpler phosphate ester.
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The increase in the glycolytic enzyme fructose 1,6 diphosphatase increases the pentose phosphate pathway.
The nucleoside diphosphates are converted to dianionic nucleoside monophosphates (used for the antiporter) and inorganic phosphate by a nucleoside diphosphatase.
Induction of liver enzymes important in xenobiotic and thyroid hormone metabolism--for example, uridine diphosphatase glucuronosyl transferases--can be measured in vitro in hepatocytes cultured with the test chemical.