sturtevant had earlier found ( personal communication ) that free tyrosine o-phosphate , upon hydrolysis with alkaline phosphatase in a calorimeter ( 37 degrees c , ph 9 ) , yielded a delta h degrees of -2.8 kcal/mol ( 1 kcal = 4.18 kj ) , less than half of that found in atp hydrolysis .
C0020291
hydrolysis
C0002059
alkaline phosphatase