3.1.3.104	Fe2+	about 50% of the activity with Mg2+	738056	
3.1.3.104	Mg2+	Mg2+ affords maximum catalytic activity over 1-5 mM, half-maximal velocity at 0.2 mM	738056	
3.1.3.104	additional information	presence of a divalent cation is absolutely required	738056