2.2.1.6	Mg2+	-	395898, 667251, 672568, 672868, 695852, 697349, 697972, 699740	
2.2.1.6	Mn2+	-	395914	
2.2.1.6	Mg2+	0.5 mM used in assay conditions	757919	
2.2.1.6	Mg2+	1 mM used in assay conditions	758259	
2.2.1.6	Mg2+	10 mM used in assay conditions	756075, 756663	
2.2.1.6	Mg2+	a bivalent metal cation is required	733685	
2.2.1.6	additional information	a divalent ion is required	719117	
2.2.1.6	Mg2+	a divalent metal ion is required	672867	
2.2.1.6	Al3+	activates	700782	
2.2.1.6	Ba2+	activates	700782