3.6.1.8	Ba2+	no effect	210222, 210226	
3.6.1.8	Ba2+	weak activation	210225	
3.6.1.8	Ba2+	weak inhibition in absence of Mg2+	210224	
3.6.1.8	Ca2+	-	210221	
3.6.1.8	Ca2+	no effect	210221	
3.6.1.8	Ca2+	required for activity	210222, 210224, 210225, 210226	
3.6.1.8	Cd2+	no effect	210222	
3.6.1.8	Co2+	activating	210226	
3.6.1.8	Co2+	no effect	210222	
3.6.1.8	Cu2+	no effect	210222