EOG8M946W GO:0004721 1/93 phosphoprotein phosphatase activity molecular_function "Catalysis of the reaction: a phosphoprotein + H2O = a protein + phosphate. Together with protein kinases, these enzymes control the state of phosphorylation of cell proteins and thereby provide an important mechanism for regulating cellular activity." [EC:3.1.3.16, ISBN:0198547684] EOG8M946W GO:0003012 1/93 muscle system process biological_process "A organ system process carried out at the level of a muscle. Muscle tissue is composed of contractile cells or fibers." [GOC:mtg_cardio]