3.5.1.6	Co2+	-	685395, 695782	
3.5.1.6	Mg2+	-	172061, 172065	
3.5.1.6	Mn2+	-	695782	
3.5.1.6	Ni2+	-	172065, 695782, 720104	
3.5.1.6	Zn2+	-	172056, 172065, 685395	
3.5.1.6	Zn2+	contains two tightly bound Zn2+, removal leads to loss of activity	656700	
3.5.1.6	Zn2+	contains two Zn2+ per subunit, dizinc metal center in the catalytic domain of the subunit representing the active site of enzyme, binding mode	656188	
3.5.1.6	Zn2+	two Zn2+ ions per subunit	685395	
3.5.1.6	Zn2+	Zn2+-dependent enzyme, required as a catalytic cofactor	657030