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
2P2L-ZN-6	ZN	Zn²⁺	H2	HIS.	HIS.	✔	2	2	2	✘
2P2L-ZN-7	ZN	Zn²⁺	H2	HIS.	HIS.	✔	2	2	2	✘
2PQK-NA-1	NA	Na⁺	D1E2	ASP.GLU.	ASP.GLU.	✔	3	3	2	✘
2PQK-NA-2	NA	Na⁺	D1E2	ASP.GLU.	ASP.GLU.	✔	3	3	2	✘
2PQK-NA-3	NA	Na⁺	D1E2	ASP.GLU.	ASP.GLU.	✔	3	3	2	✘
2PQK-NA-4	NA	Na⁺	D1E2	ASP.GLU.	ASP.GLU.	✔	3	3	2	✘
2PCU-ZN-1	ZN	Zn²⁺	E1V1	GLU.VAL.	GLU.VAL.	✘	2	2	2	✔
2PDO-ZN-1	ZN	Zn²⁺	E2H2	GLU.HIS.	GLU.HIS.HOH.	✔	4	7	2	✔
2PDO-ZN-2	ZN	Zn²⁺	E2H2	GLU.HIS.	GLU.HIS.HOH.	✔	4	7	2	✘
2PDO-ZN-3	ZN	Zn²⁺	D2E1	ASP.GLU.	ASP.GLU.HOH.	✔	3	5	2	✔
2PDO-ZN-4	ZN	Zn²⁺	D2E1	ASP.GLU.	ASP.GLU.HOH.	✔	3	5	3	✔
2PH1-ZN-1	ZN	Zn²⁺	C4	CYS.	CYS.	✔	4	4	2	✔
2NL9-ZN-1	ZN	Zn²⁺	D1E2	ASP.GLU.	ASP.GLU.HOH.	✔	3	4	2	✔
2NL9-ZN-2	ZN	Zn²⁺	D1E2	ASP.GLU.	ASP.GLU.HOH.	✔	3	4	2	✔
2NL9-ZN-3	ZN	Zn²⁺	D1E2	ASP.GLU.	ASP.GLU.HOH.	✔	3	4	2	✘
2NL9-ZN-4	ZN	Zn²⁺	D1E2	ASP.GLU.	ASP.GLU.HOH.	✔	3	4	2	✘
2NL9-ZN-5	ZN	Zn²⁺	C2	CYS.	CYS.	✔	2	2	2	✔
2NL9-ZN-6	ZN	Zn²⁺	C2	CYS.	CYS.	✔	2	2	2	✘
2NL9-ZN-7	ZN	Zn²⁺	C2	CYS.	CYS.	✔	2	2	2	✘
2NL9-ZN-8	ZN	Zn²⁺	C2	CYS.	CYS.	✔	2	2	2	✘