6.2.1.4	Mg2+	-	690760, 693488	
6.2.1.4	Mg2+	required	743947	
6.2.1.4	Mg2+	required for catalysis, Mn2+ can replace Mg2+ in catalysis	726583	
6.2.1.4	Mg2+	SucCDAm is Mg2+- or Mn2+-dependent	715381	
6.2.1.4	Mn2+	Mn2+ can replace Mg2+ in catalysis	726583	
6.2.1.4	Mn2+	required	671128	
6.2.1.4	Mn2+	SucCDAm is Mg2+- or Mn2+-dependent	715381