EOG8FTZFM GO:0004721 23/82 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] EOG8FTZFM GO:0005634 23/82 nucleus cellular_component "A membrane-bounded organelle of eukaryotic cells in which chromosomes are housed and replicated. In most cells, the nucleus contains all of the cell's chromosomes except the organellar chromosomes, and is the site of RNA synthesis and processing. In some species, or in specialized cell types, RNA metabolism or DNA replication may be absent." [GOC:go_curators] EOG8FTZFM GO:0046872 1/82 metal ion binding molecular_function "Interacting selectively and non-covalently with any metal ion." [GOC:ai]