3.2.2.22	Mg2+	-	
3.2.2.22	Mg2+	activates	
3.2.2.22	Mg2+	required for activity	
3.2.2.22	Mg2+	activity of 1 of 7 isoforms of saporin is dependent on magnesium concentration	
3.2.2.22	additional information	the enzyme requires divalent metal ions for activity	
3.2.2.22	NH4+	activates