1.2.1.75	Ca2+	stimulation in decreasing order: Fe2+, Ca2+, Mg2+	
1.2.1.75	Fe2+	stimulation in decreasing order: Fe2+, Ca2+, Mg2+	
1.2.1.75	Mg2+	2fold stimulation at 5 mM	
1.2.1.75	Mg2+	stimulation in decreasing order: Fe2+, Ca2+, Mg2+	
1.2.1.75	Mg2+	1 mM used in assay conditions	
1.2.1.75	Mn2+	2fold stimulation at 5 mM