the major secreted isoenzyme of human prostatic acid phosphatase ( pacp ) ( ec 3.1.3.2 ) , which catalyses p-nitrophenyl phosphate ( pnpp ) hydrolysis at acid ph values , was found to have phosphotyrosyl protein phosphatase activity since it dephosphorylated three different phosphotyrosine-containing protein substrates .
C0020291
hydrolysis
C0085536
phosphotyrosyl protein phosphatase activity