3.5.4.4	Li+	-	209613	
3.5.4.4	K+	-	209616	
3.5.4.4	Na+	-	209616	
3.5.4.4	Fe3+	-	209627, 209630	
3.5.4.4	Sn2+	-	209630	
3.5.4.4	CoSO4	-	209631	
3.5.4.4	MgCl2	-	209631	
3.5.4.4	Zn2+	coordinated by His15, His17, His214, and Asp295	669783	
3.5.4.4	Zn2+	zinc-metalloenzyme, binding structure	669846	
3.5.4.4	Ba2+	-	686577