Abstract
Summary
Human erythrocyte inorganic pyrophosphatase rapidly lost activity by incubation above 37°C. The enzyme was protected against heat inactivation by pyro-phosphate, magnesium and cysteine. Dilute enzyme preparations were more labile than concentrated ones. The reaction catalyzed by pyrophosphatase was inhibited by nucleotide triphosphates. Inosine triphosphate served as substrate for stroma-free hemolysates.
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