The estimation of adenosinetriphosphate

Abstract
It was shown that myosin, myosin + myokinase and hexokinase give lower values than apyrase or acid hydrolysis when used to estimate the labile groups of laboratory prepns. of adenosinetri-phosphate. A suggestion is made that a contaminant organo-metaphosphate might be responsible for this difference. It is recommended that myosin and myokinase be used for the assay of adenosinetriphosphate.