PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 1654799-1 1991 Dissociation of Mg2+ from one of the two metal-binding sites whose occupancy is absolutely required for catalysis by rat liver inorganic pyrophosphatase is a slow reaction (tau 1/2 = 3 h). magnesium ion 16-20 inorganic pyrophosphatase 1 Rattus norvegicus 127-152 1654799-1 1991 Dissociation of Mg2+ from one of the two metal-binding sites whose occupancy is absolutely required for catalysis by rat liver inorganic pyrophosphatase is a slow reaction (tau 1/2 = 3 h). Metals 41-46 inorganic pyrophosphatase 1 Rattus norvegicus 127-152