2.4.2.24 Mg2+ enzyme requires Mg2+ or Mn2+ for activity, activates 660079 2.4.2.24 Mg2+ stimulates, Mg2+ more effective than Mn2+ 489791 2.4.2.24 Mn2+ enzyme requires Mg2+ or Mn2+ for activity, high activation at 5 mM MnCl2 660079 2.4.2.24 Mn2+ stimulates, Mg2+ more effective than Mn2+ 489791 2.4.2.24 additional information no requirement for divalent metal ion 489789