. "A group of enzymes removing the serine-or threonine-bound phosphate group from a wide range of phosphoproteins, including a number of enzymes which have been phosphorylated under the action of a kinase (cf. EC 3.1.3.48)." . "The spleen enzyme also acts on phenolic phosphates and phosphamides (cf. EC 3.9.1.1)." . . . "Serine/threonine specific protein phosphatase" . "Phosphoprotein phosphatase" . "Protein phosphatase-1" . "Protein phosphatase-2A" . "Protein phosphatase-2B" . "Protein phosphatase-2C" . "A phosphoprotein + H(2)O = a protein + phosphate." .