Id	Element	Ion	Binding family	Amino acids or nucleotide residues names	All bound residues	Is homomer	Number of bound amino acids or nucleotide residues	Number of all bound residues	Number of coordinating chains	Representative
3LDY-CA-1	CA	Ca²⁺	D1N1T2	ASN.ASP.DT.	ASN.ASP.DT.HOH.	✘	4	6	2	✔
3LJM-CA-1	CA	Ca²⁺	E2	GLU.	GLU.	✔	2	2	2	✔
3LKV-ZN-1	ZN	Zn²⁺	D2E2	ASP.GLU.	ASP.GLU.	✔	4	4	2	✔
3M15-ZN-1	ZN	Zn²⁺	H4	HIS.	HIS.	✔	4	4	3	✘
3M15-ZN-2	ZN	Zn²⁺	H4	HIS.	HIS.	✔	4	4	3	✘
3GDF-ZN-1	ZN	Zn²⁺	R2	ARG.	ARG.HOH.	✔	2	5	2	✘
3GDF-ZN-2	ZN	Zn²⁺	R2	ARG.	ARG.HOH.	✔	2	5	2	✘
3GOX-NA-1	NA	Na⁺	A1D1G1N1	ASN.ASP.DA.DG.	ASN.ASP.DA.DG.HOH.	✘	4	6	2	✔
3GOX-NA-2	NA	Na⁺	D1G1N1T1	ASN.ASP.DG.DT.	ASN.ASP.DG.DT.HOH.	✘	4	6	2	✔
3H1K-ZN-1	ZN	Zn²⁺	H2	HIS.	HIS.	✘	2	2	2	✔
3H1K-ZN-2	ZN	Zn²⁺	H2	HIS.	HIS.	✘	2	2	2	✔
3H44-ZN-1	ZN	Zn²⁺	E1R1	ARG.GLU.	ARG.GLU.	✘	2	2	2	✔
3H44-ZN-2	ZN	Zn²⁺	E1R1	ARG.GLU.	ARG.GLU.	✘	2	2	2	✔
3H50-ZN-1	ZN	Zn²⁺	H2	HIS.	HIS.	✔	2	2	2	✔
3H5G-ZN-1	ZN	Zn²⁺	E2	GLU.	GLU.HOH.	✔	2	3	2	✘
3H5G-ZN-2	ZN	Zn²⁺	E2	GLU.	GLU.HOH.	✔	2	4	2	✘
3OQ3-ZN-1	ZN	Zn²⁺	H2	HIS.	HIS.	✘	2	2	2	✔
3OTM-ZN-1	ZN	Zn²⁺	H3	HIS.	HIS.	✔	3	3	2	✔
3OTM-ZN-2	ZN	Zn²⁺	H3	HIS.	HIS.	✔	3	3	2	✔
3OUP-ZN-1	ZN	Zn²⁺	H3	HIS.	HIS.	✔	3	3	2	✘