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
2AGZ-ZN-3	ZN	Zn²⁺	H2	HIS.	HIS.	✔	2	2	2	✔
2AGZ-ZN-4	ZN	Zn²⁺	H2	HIS.	HIS.	✔	2	2	2	✔
2AIG-CA-1	CA	Ca²⁺	C1D1E1N1Q1	ASN.ASP.CYS.GLN.GLU.	ASN.ASP.CYS.GLN.GLU.HOH.	✔	5	6	2	✔
2AIG-CA-2	CA	Ca²⁺	C1D1E1N1Q1	ASN.ASP.CYS.GLN.GLU.	ASN.ASP.CYS.GLN.GLU.HOH.	✔	5	6	2	✔
2AK1-ZN-1	ZN	Zn²⁺	E1Q1	GLN.GLU.	GLN.GLU.HOH.	✘	2	3	2	✔
2AK1-ZN-2	ZN	Zn²⁺	H1Q1	GLN.HIS.	GLN.HIS.	✘	2	2	2	✘
2AJY-ZN-1	ZN	Zn²⁺	H1Q1	GLN.HIS.	GLN.HIS.	✘	2	2	2	✔
2AJY-ZN-2	ZN	Zn²⁺	H1Q1	GLN.HIS.	GLN.HIS.	✘	2	2	2	✘
2AKF-ZN-1	ZN	Zn²⁺	E3	GLU.	GLU.HOH.	✔	3	4	3	✔
2AKF-ZN-2	ZN	Zn²⁺	D1E2	ASP.GLU.	ASP.GLU.HOH.	✔	3	4	2	✘
2CEI-ZN-1	ZN	Zn²⁺	D1Q1	ASP.GLN.	ASP.GLN.HOH.	✔	2	3	2	✔
2CEI-ZN-2	ZN	Zn²⁺	D1Q1	ASP.GLN.	ASP.GLN.HOH.	✔	2	3	2	✘
2CEI-ZN-3	ZN	Zn²⁺	D1Q1	ASP.GLN.	ASP.GLN.HOH.	✔	2	3	2	✘
2CEI-ZN-4	ZN	Zn²⁺	D1Q1	ASP.GLN.	ASP.GLN.HOH.	✔	2	3	2	✘
2CEI-ZN-5	ZN	Zn²⁺	D1Q1	ASP.GLN.	ASP.GLN.HOH.	✔	2	3	2	✘
2CEI-ZN-6	ZN	Zn²⁺	D1Q1	ASP.GLN.	ASP.GLN.HOH.	✔	2	3	2	✘
2CEI-ZN-7	ZN	Zn²⁺	D1Q1	ASP.GLN.	ASP.GLN.HOH.	✔	2	3	2	✘
2CEI-ZN-8	ZN	Zn²⁺	D1Q1	ASP.GLN.	ASP.GLN.HOH.	✔	2	3	2	✘
2CEI-ZN-9	ZN	Zn²⁺	D1Q1	ASP.GLN.	ASP.GLN.HOH.	✔	2	3	2	✘
2CEI-ZN-10	ZN	Zn²⁺	D1Q1	ASP.GLN.	ASP.GLN.HOH.	✔	2	3	2	✘