1.6.2.2	Ca2+	2 mM, 23fold activation	394197	
1.6.2.2	Ca2+	activates	742236	
1.6.2.2	Mg2+	half maximal activation at 1 mM	394197	
1.6.2.2	additional information	-	394232	
1.6.2.2	additional information	enzyme does not contain appreciable amounts of iron, copper, manganes, silver, mercury, lead, zinc, cobalt or nickel	394232	
1.6.2.2	additional information	rate of reduction depends on ionic strength	394205, 394212, 394218