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
6POY-ZN-1	ZN	Zn²⁺	C4	CYS.	CYS.	✔	4	4	2	✘
1QSL-EU-1	EU	Eu²⁺	C1D2E1	ASP.DC.GLU.	ASP.DC.GLU.HOH.	✘	4	5	2	✔
2X6B-BA-1	BA	Ba²⁺	T4	THR.	THR.	✔	4	4	4	✘
4IAZ-BA-1	BA	Ba²⁺	D1X1	ASP.SEP.	ADP.ASP.HOH.SEP.	✘	2	7	2	✘
4RI9-BA-1	BA	Ba²⁺	C1D1E1V1	ASP.DC.GLU.VAL.	ASP.DC.GLU.VAL.	✘	4	4	2	✔
4PDV-BA-1	BA	Ba²⁺	T4V4	THR.VAL.	THR.VAL.	✔	8	8	4	✘
4BJH-BA-1	BA	Ba²⁺	E2	GLU.	GLU.HOH.	✔	2	4	2	✔
4BJH-BA-2	BA	Ba²⁺	E2	GLU.	GLU.HOH.	✔	2	4	2	✘
4BJH-BA-3	BA	Ba²⁺	E2	GLU.	GLU.HOH.	✔	2	4	2	✘
4BJH-BA-4	BA	Ba²⁺	E2	GLU.	GLU.HOH.	✔	2	4	2	✘
4BJH-BA-5	BA	Ba²⁺	E2	GLU.	GLU.HOH.	✔	2	4	2	✘
4BJH-BA-6	BA	Ba²⁺	E2	GLU.	GLU.HOH.	✔	2	4	2	✘
1ZQB-BA-1	BA	Ba²⁺	I1T2	DT.ILE.THR.	DT.HOH.ILE.THR.	✘	3	4	2	✔
1ZQN-BA-1	BA	Ba²⁺	I1T2	DT.ILE.THR.	DT.HOH.ILE.THR.	✘	3	4	2	✘
1WRO-BA-1	BA	Ba²⁺	E1G1	GLU.GLY.	HIS.HOH.	✔	2	2	2	✔
1WRO-BA-2	BA	Ba²⁺	E1G1	GLU.GLY.	HIS.HOH.	✔	2	2	2	✘
1WRO-BA-3	BA	Ba²⁺	E1G1	GLU.GLY.	GLU.GLY.	✔	2	2	2	✔
1WRO-BA-4	BA	Ba²⁺	E1G1	GLU.GLY.	GLU.GLY.	✔	2	2	2	✘
1WRO-BA-5	BA	Ba²⁺	H3	HIS.	GLU.GLY.	✔	3	2	2	✘
1WRO-BA-6	BA	Ba²⁺	H3	HIS.	GLU.GLY.	✔	3	2	2	✘