2.5.1.21	Mg2+	-	489858, 759803	
2.5.1.21	Mg2+	cofactor	697143, 703278	
2.5.1.21	Mg2+	Mn2+ is more effective than Mg2+ in activation of dehydrosqualene formation	489828, 489838	
2.5.1.21	Mg2+	Mn2+ is six times more effective in activation than Mg2+	489837	
2.5.1.21	Mg2+	most effective in stimulation of squalene formation, half-maximal activity at 2.5 mM	489828	
2.5.1.21	Mg2+	no effect	489837	
2.5.1.21	Mg2+	required	687416, 722293, 738798, 738856, 739037, 739735, 741903	
2.5.1.21	Mg2+	required for squalene synthase reaction	489826, 489838	
2.5.1.21	Mg2+	required, best at 1,25 mM	738214	
2.5.1.21	Mg2+	required, best at 10 mM, inhibition above 35 mM	489859