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
7M54-CA-4	CA	Ca²⁺	D2	ASP.	ASP.	✔	2	2	2	✔
7M54-CA-5	CA	Ca²⁺	D2	ASP.	ASP.	✔	2	2	2	✘
7M54-CA-6	CA	Ca²⁺	D2	ASP.	ASP.	✔	2	2	2	✔
8E73-ZN-1	ZN	Zn²⁺	H3	HIS.	HIS.	✘	3	3	2	✔
8BEF-ZN-1	ZN	Zn²⁺	H3	HIS.	HIS.	✘	3	3	2	✔
2FGR-CA-1	CA	Ca²⁺	D1E1G1L1N1	ASN.ASP.GLU.GLY.LEU.	ASN.ASP.GLU.GLY.HOH.LEU.	✔	5	6	2	✔
2FGR-CA-2	CA	Ca²⁺	D1E1G1L1N1	ASN.ASP.GLU.GLY.LEU.	ASN.ASP.GLU.GLY.HOH.LEU.	✔	5	6	2	✘
2FGR-CA-3	CA	Ca²⁺	D1E1G1L1N1	ASN.ASP.GLU.GLY.LEU.	ASN.ASP.GLU.GLY.HOH.LEU.	✔	5	6	2	✘
2FGR-CA-4	CA	Ca²⁺	F3	PHE.	HOH.PHE.	✔	3	4	3	✔
3ES3-AU-1	AU	Au⁺	H4	HIS.	HIS.	✔	4	4	4	✘
3ES3-AU-2	AU	Au⁺	H4	HIS.	HIS.	✔	4	4	4	✘
3ES3-AU-3	AU	Au⁺	H4	HIS.	HIS.	✔	4	4	4	✘
3ES3-AU-4	AU	Au⁺	H4	HIS.	HIS.	✔	4	4	4	✘
3ES3-AU-5	AU	Au⁺	H4	HIS.	HIS.	✔	4	4	4	✘
3ES3-AU-6	AU	Au⁺	H4	HIS.	HIS.	✔	4	4	4	✘
2AFB-NI-1	NI	Ni²⁺	H3	HIS.	HIS.	✔	3	3	3	✔
2AFB-NI-2	NI	Ni²⁺	H3	HIS.	HIS.	✔	3	3	3	✘
8GY7-CA-1	CA	Ca²⁺	D2E1	ASP.GLU.	ASP.GLU.	✘	3	3	2	✔
2R36-NI-1	NI	Ni²⁺	H3	HIS.	HIS.	✔	3	3	3	✘
2R36-NI-2	NI	Ni²⁺	H3	HIS.	HIS.	✔	3	3	3	✘