6.5.1.2	K+	-	1910	
6.5.1.2	NH4+	-	1910	
6.5.1.2	Zn2+	0.24 mol per mol protein	651073	
6.5.1.2	Zn2+	1 mol per mol of enzyme, Cys406, Cys409, Cys422 and Cys427 form a zinc binding motif	650967	
6.5.1.2	Mg2+	1-10 mM, required	653388	
6.5.1.2	Mn2+	1-10 mM, required	653388	
6.5.1.2	NH4+	10 mM, stimulates activity	651073	
6.5.1.2	Ni2+	10% of activity obtained with Mg2+	651212	
6.5.1.2	Mg2+	10fold lower activation than Mn2+, maximal activity at 1 mM	672811	
6.5.1.2	Ca2+	10fold lower activation than Mn2+, maximal activity at 2 mM	672811