3.5.3.22	Co2+	preferred metal activator	
3.5.3.22	Mn2+	enhances activity	
3.5.3.22	Mn2+	50% of the activity with Co2+ as activator	
3.5.3.22	additional information	no activation by Ca2+, Fe2+ and Zn2+	
3.5.3.22	Ni2+	50% of the activity with Co2+ as activator