2.7.1.157 Co2+ divalent cation required, efficiency in descending order: Mg2+ > Mn2+ > Co2+, optimum Co2+ concentration is 10 mM, maximal activity is 50% of that with Mg2+ 659129 2.7.1.157 Mg2+ - 709300 2.7.1.157 Mg2+ addition of Mg2+ leads to partly compensating changes in DELTAH and TDELTAS, accelerating the nonenzymatic methanolysis of ATP 11fold 704525 2.7.1.157 Mg2+ divalent cation required, efficiency in descending order: Mg2+ > Mn2+ > Co2+, optimum Mg2+ concentration is 5 mM 659129 2.7.1.157 Mn2+ divalent cation required, efficiency in descending order: Mg2+ > Mn2+ > Co2+, optimum Mn2+ concentration is 2-8 mM, maximal activity is 50% of that with Mg2+ 659129