The phosphatases of mammalian tissues

Abstract

NEUBERG and WAGNER showed in 1926 that both diphenyl orthophosphate and diphenyl pyrophosphate, in aqueous solution in the form of their potas- sium salts, were hydrolysed practically completely, both by the phosphatase of takadiastase and by that of horse kidney, to salts of orthophosphoric acid [1926].Neuberg and Jacobsohn [1928] have also shown that the potassium salt of di-o-cresol pyrophosphate is similarly hydrolysed by both of these phosphatases, and that potassium di-m-cresol pyrophosphate and potassium di-a-naphthol pyrophosphate are hydrolysed by takadiastase (kidney extract not mentioned).Both kidney extract and takadiastase (prepared from