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
2DPQ-CA-1	CA	Ca²⁺	X4	CGU.	CGU.HOH.	✔	4	6	2	✔
2DPQ-CA-2	CA	Ca²⁺	Q1X3	CGU.GLN.	CGU.GLN.	✔	4	4	2	✔
2DPQ-CA-3	CA	Ca²⁺	Q1X3	CGU.GLN.	CGU.GLN.	✔	4	4	2	✘
2E85-CA-1	CA	Ca²⁺	D1E1Q1	ASP.GLN.GLU.	ASP.GLN.GLU.HOH.	✔	3	7	2	✔
1OPO-CA-1	CA	Ca²⁺	D3N1	ASN.ASP.	ASN.ASP.	✔	4	4	2	✔
1OPO-CA-2	CA	Ca²⁺	D3N1	ASN.ASP.	ASN.ASP.	✔	4	4	2	✘
1OPO-CA-3	CA	Ca²⁺	D3N1	ASN.ASP.	ASN.ASP.	✔	4	4	2	✘
1OPO-CA-4	CA	Ca²⁺	D3N1	ASN.ASP.	ASN.ASP.	✔	4	4	2	✘
1OPO-CA-5	CA	Ca²⁺	D3N1	ASN.ASP.	ASN.ASP.	✔	4	4	2	✘
1OPO-CA-6	CA	Ca²⁺	D3N1	ASN.ASP.	ASN.ASP.	✔	4	4	2	✘
1OPO-CA-7	CA	Ca²⁺	D3N1	ASN.ASP.	ASN.ASP.	✔	4	4	2	✘
1OPO-CA-8	CA	Ca²⁺	D3N1	ASN.ASP.	ASN.ASP.	✔	4	4	2	✘
1OPO-CA-9	CA	Ca²⁺	D3N1	ASN.ASP.	ASN.ASP.	✔	4	4	2	✘
1OPO-CA-10	CA	Ca²⁺	D3N1	ASN.ASP.	ASN.ASP.	✔	4	4	2	✘
1OPO-CA-11	CA	Ca²⁺	D3N1	ASN.ASP.	ASN.ASP.	✔	4	4	2	✘
1OPO-CA-12	CA	Ca²⁺	D3N1	ASN.ASP.	ASN.ASP.	✔	4	4	2	✘
1OPO-CA-13	CA	Ca²⁺	D3N1	ASN.ASP.	ASN.ASP.	✔	4	4	2	✘
1OPO-CA-14	CA	Ca²⁺	D3N1	ASN.ASP.	ASN.ASP.	✔	4	4	2	✘
1OPO-CA-15	CA	Ca²⁺	D3N1	ASN.ASP.	ASN.ASP.	✔	4	4	2	✘
1OPO-CA-16	CA	Ca²⁺	D3N1	ASN.ASP.	ASN.ASP.	✔	4	4	2	✘