2.7.2.8	Ca2+	Mn2+, Zn2+, Co2+ and Ca2+ in this order can partially replace Mg2+	642356	
2.7.2.8	Co2+	Mg2+ or Co2+ required	642353, 642354	
2.7.2.8	Co2+	Mn2+, Zn2+, Co2+ and Ca2+ in this order can partially replace Mg2+	642356	
2.7.2.8	Mg2+	-	642354, 673641, 692856	
2.7.2.8	Mg2+	10 mM used in assay conditions	761811	
2.7.2.8	Mg2+	30 mM, slight inhibition	642356	
2.7.2.8	Mg2+	40 mM used in assay conditions	761643	
2.7.2.8	Mg2+	employed in assay mixture	390278, 642351	
2.7.2.8	Mg2+	Mg2+ or Co2+ required	642353, 642354	
2.7.2.8	Mg2+	required	642354, 642355, 642356, 702066, 735596, 738801