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
4OGR-ZN-1	ZN	Zn²⁺	C4	CYS.	CYS.	✘	4	4	2	✔
4NAY-ZN-1	ZN	Zn²⁺	H2	HIS.	HIS.	✔	2	2	2	✘
4NAZ-ZN-1	ZN	Zn²⁺	H2	HIS.	HIS.	✔	2	2	2	✔
4N27-ZN-1	ZN	Zn²⁺	H3	HIS.	HOH.	✔	3	2	2	✔
4N3V-NA-1	NA	Na⁺	E3	GLU.	GLU.HOH.	✔	3	6	3	✔
4N4W-ZN-1	ZN	Zn²⁺	D2	ASP.	ASP.	✔	2	2	2	✔
4MSQ-ZN-1	ZN	Zn²⁺	D1G1	ASP.GLY.	ASP.GLY.	✘	2	2	2	✘
4MTS-NI-1	NI	Ni²⁺	H2	HIS.	HIS.	✔	2	2	2	✔
4MTT-NI-1	NI	Ni²⁺	H2	HIS.	HIS.	✔	2	2	2	✘
4MTR-ZN-1	ZN	Zn²⁺	E2	GLU.	GLU.HOH.	✔	2	3	2	✘
4MTR-ZN-2	ZN	Zn²⁺	H2	HIS.	HIS.	✔	2	2	2	✘
4NGE-ZN-1	ZN	Zn²⁺	E1F1	GLU.PHE.	GLU.PHE.	✘	2	2	2	✔
4K08-ZN-1	ZN	Zn²⁺	H2	HIS.	HIS.	✔	2	2	2	✔
4JNJ-ZN-1	ZN	Zn²⁺	D1E1	ASP.GLU.	ASP.GLU.HOH.	✔	2	4	2	✔
4K1R-ZN-1	ZN	Zn²⁺	D1G1	ASP.GLY.	ASP.GLY.	✘	2	2	2	✔
4K1T-ZN-1	ZN	Zn²⁺	D1E1G1	ASP.GLU.GLY.	ASP.GLU.GLY.	✔	3	3	3	✔
4K1T-ZN-2	ZN	Zn²⁺	G1H1	GLY.HIS.	GLY.HIS.	✔	2	2	2	✘
4K1T-ZN-3	ZN	Zn²⁺	D3	ASP.	ASP.SO4.	✔	3	4	3	✔
4K1T-ZN-4	ZN	Zn²⁺	D3	ASP.	ASP.SO4.	✔	3	4	3	✘
4K1T-ZN-5	ZN	Zn²⁺	D1H1	ASP.HIS.	ASP.HIS.	✔	2	2	2	✘