Abstract
Summary
1. It has been demonstrated that uranyl chloride (UO2 Cl2) inhibits myosin ATPase activity. The extent of inhibition is influenced by the strenght of K-ion and is enhanced by calcium or magnesium. The pH value 6.6, of those tested, is most favorable for inhibition. 2. Uranyl chloride per se causes dephosphorylation of ATP. This action is less than that caused by cerium and about equal to that of lanthanum.
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