phosphoprotein phosphatase activity https://github.com/geneontology/go-ontology/issues/25787 Reactome:R-HSA-167072 Reactome:R-HSA-1363274 protein phosphatase-2C activity EC:3.1.3.55 Reactome:R-HSA-170158 Reactome:R-HSA-112383 Reactome:R-HSA-170161 phosphoprotein phosphohydrolase activity protein phosphatase activity Reactome:R-HSA-2529015 Reactome:R-HSA-174124 GO:0004721 Reactome:R-HSA-113503 molecular_function protein phosphatase-2B activity Reactome:R-HSA-178178 protein phosphatase-1 activity Reactome:R-HSA-170153 Reactome:R-HSA-9636684 Reactome:R-HSA-1363276 Catalysis of the reaction: a phosphoprotein + H2O = a protein + phosphate. Together with protein kinases, these enzymes control the state of phosphorylation of cellular proteins and thereby provide an important mechanism for regulating cellular activity. protein phosphatase-2A activity Reactome:R-HSA-69199 Reactome:R-HSA-174110 phosphatase activity catalytic activity, acting on a protein