3.4.24.89	Cu2+	partly substitutes for Zn2+	728634	
3.4.24.89	Ni2+	partly substitutes for Zn2+	728634	
3.4.24.89	Zn2+	-	735291	
3.4.24.89	Zn2+	presence of bound Zn2+ in the protein	728302	
3.4.24.89	Zn2+	required	728634, 754181