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
6GCG-CU-2	CU	Cu²⁺	H3	HIS.	HIS.	✔	3	3	2	✘
6GCG-CU-3	CU	Cu²⁺	H3	HIS.	HIS.	✔	3	3	2	✘
6YZF-CU-1	CU	Cu²⁺	H3	HIS.	HIS.	✔	3	3	2	✔
6YZF-CU-2	CU	Cu²⁺	H3	HIS.	HIS.	✔	3	3	2	✘
4O3C-LI-1	LI	Li⁺	N1S1	ASN.SER.	ASN.HOH.SER.	✔	2	4	2	✔
4O3C-LI-2	LI	Li⁺	N1S1	ASN.SER.	ASN.HOH.SER.	✔	2	4	2	✘
4HGZ-LI-1	LI	Li⁺	G3	GLY.	GLY.	✔	3	3	3	✔
2ECS-LI-1	LI	Li⁺	D1Q1	ASP.GLN.	ACT.ASP.GLN.	✔	2	3	2	✔
2ECS-LI-2	LI	Li⁺	D1Q1	ASP.GLN.	ACT.ASP.GLN.	✔	2	3	2	✘
2ECS-LI-3	LI	Li⁺	D1Q1	ASP.GLN.	ACT.ASP.GLN.	✔	2	3	2	✔
2ECS-LI-4	LI	Li⁺	D1Q1	ASP.GLN.	ACT.ASP.GLN.	✔	2	3	2	✘
5O4J-LI-1	LI	Li⁺	D1S1	ASP.SER.	ASP.HOH.SER.	✔	2	3	2	✔
5FHM-LI-1	LI	Li⁺	N1S1	ASN.SER.	ASN.HOH.SER.	✔	2	4	2	✔
5G02-LI-1	LI	Li⁺	D3	ASP.	ASP.HOH.	✔	3	4	3	✔
5G02-LI-2	LI	Li⁺	D3	ASP.	ASP.HOH.	✔	3	4	3	✘
5G02-LI-3	LI	Li⁺	D3	ASP.	ASP.HOH.	✔	3	4	3	✘
6SFH-LI-1	LI	Li⁺	Q1Y2	GLN.TYR.	GLN.TYR.	✔	3	3	2	✔
3O7S-CD-1	CD	Cd²⁺	D1Q1	ASP.GLN.	ASP.GLN.	✔	2	2	2	✘
3O7S-CD-2	CD	Cd²⁺	D1Q1	ASP.GLN.	ASP.GLN.	✔	2	2	2	✘
3O7S-CD-3	CD	Cd²⁺	D1Q1	ASP.GLN.	ASP.GLN.	✔	2	2	2	✘