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
1GQM-CA-3	CA	Ca²⁺	E1Q2	GLN.GLU.	GLN.GLU.	✔	3	3	2	✘
1GQM-CA-4	CA	Ca²⁺	E1Q2	GLN.GLU.	GLN.GLU.	✔	3	3	2	✘
1GQM-CA-5	CA	Ca²⁺	E1Q2	GLN.GLU.	GLN.GLU.	✔	3	3	2	✘
1GQM-CA-6	CA	Ca²⁺	E1Q2	GLN.GLU.	GLN.GLU.	✔	3	3	2	✘
1G8K-CA-1	CA	Ca²⁺	D2Q1S1	ASP.GLN.SER.	GLY.HOH.	✔	4	7	2	✔
1G8K-CA-2	CA	Ca²⁺	D2Q1S1	ASP.GLN.SER.	ASP.GLN.HOH.SER.	✔	4	6	2	✘
1G9Y-CA-1	CA	Ca²⁺	A1C1D2G2	ASP.DA.DC.DG.	ASP.DA.DC.DG.	✘	6	6	4	✔
1G9Y-CA-2	CA	Ca²⁺	A1D1G2	ASP.DA.DG.GLY.	ASP.DA.DG.GLY.HOH.	✘	4	6	4	✔
1G9Y-CA-3	CA	Ca²⁺	C1D1G2	ASP.DC.DG.GLY.	ASP.DC.DG.GLY.HOH.	✘	4	6	4	✔
1FXV-CA-1	CA	Ca²⁺	D3E1P1V1	ASP.GLU.PRO.VAL.	ASP.GLU.PRO.VAL.	✘	6	6	2	✘
1G9U-CA-1	CA	Ca²⁺	D1N2	ASN.ASP.	ASN.ASP.HOH.	✔	3	6	2	✔
1G9U-CA-2	CA	Ca²⁺	D1N2	ASN.ASP.	ASN.ASP.HOH.	✔	3	6	2	✘
1G9U-CA-3	CA	Ca²⁺	D1N2	ASN.ASP.	ASN.ASP.HOH.	✔	3	6	2	✘
1G9U-CA-4	CA	Ca²⁺	D1N2	ASN.ASP.	ASN.ASP.HOH.	✔	3	6	2	✘
1G9U-CA-5	CA	Ca²⁺	D1E1N1	ASN.ASP.GLU.	ASN.ASP.GLU.HOH.	✔	3	7	2	✔
1G9U-CA-6	CA	Ca²⁺	D1E1N1	ASN.ASP.GLU.	ASN.ASP.GLU.HOH.	✔	3	7	2	✘
1G9U-CA-7	CA	Ca²⁺	D1E1N1	ASN.ASP.GLU.	ASN.ASP.GLU.HOH.	✔	3	7	2	✘
1G9U-CA-8	CA	Ca²⁺	D1E1N1	ASN.ASP.GLU.	ASN.ASP.GLU.HOH.	✔	3	7	2	✘
1FXH-CA-1	CA	Ca²⁺	D3E1P1V1	ASP.GLU.PRO.VAL.	ASP.GLU.PRO.VAL.	✘	6	6	2	✘
7K4B-CA-1	CA	Ca²⁺	D2	ASP.	ASP.	✔	2	2	2	✘