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
1PW9-CA-1	CA	Ca²⁺	E3	GLU.	GLU.HOH.	✔	3	6	3	✔
1PWB-CA-1	CA	Ca²⁺	D1E2N2X1	ASN.ASP.GLC.GLU.	ASN.ASP.GLC.GLU.	✘	6	6	2	✔
7LVV-CA-1	CA	Ca²⁺	C1D1E1S1	ASP.DC.GLU.SER.	ASP.DC.GLU.SER.	✘	4	4	2	✘
7LVV-CA-2	CA	Ca²⁺	C1D1E1S1	ASP.DC.GLU.SER.	ASP.DC.GLU.SER.	✘	4	4	2	✘
7LVV-CA-3	CA	Ca²⁺	D1E2G1S1	ASP.DG.GLU.SER.	ASP.DG.GLU.SER.	✘	5	5	2	✘
7LVV-CA-4	CA	Ca²⁺	D1E2G1S1	ASP.DG.GLU.SER.	ASP.DG.GLU.SER.	✘	5	5	2	✘
7MIY-CA-1	CA	Ca²⁺	D1S2T1	ASP.SER.THR.	ASP.SER.THR.	✘	4	4	2	✔
7MIX-CA-1	CA	Ca²⁺	D1S2T1	ASP.SER.THR.	ASP.SER.THR.	✘	4	4	2	✔
7L63-CA-1	CA	Ca²⁺	D1E2N2X1	ASN.ASP.FUC.GLU.	ASN.ASP.FUC.GLU.	✘	6	6	2	✔
7L64-CA-1	CA	Ca²⁺	D1E2N2X1	ASN.ASP.FUC.GLU.	ASN.ASP.FUC.GLU.	✘	6	6	2	✔
7L61-CA-1	CA	Ca²⁺	D1E2N2X1	ASN.ASP.FUC.GLU.	ASN.ASP.FUC.GLU.	✘	6	6	2	✔
7L62-CA-1	CA	Ca²⁺	D1E2N2X1	ASN.ASP.FUC.GLU.	ASN.ASP.FUC.GLU.	✘	6	6	2	✔
7L67-CA-1	CA	Ca²⁺	D1E2N2X1	ASN.ASP.FUC.GLU.	ASN.ASP.FUC.GLU.	✘	6	6	2	✔
1DFX-CA-1	CA	Ca²⁺	S2	SER.	HOH.SER.	✔	2	4	2	✔
1DMU-CA-1	CA	Ca²⁺	A1D1T1	ASP.DA.DT.	ASP.DA.DT.HOH.	✘	3	7	2	✔
1DMU-CA-2	CA	Ca²⁺	A1D1T1	ASP.DA.DT.	ASP.DA.DT.HOH.	✘	3	7	2	✘
1DMU-CA-3	CA	Ca²⁺	A1D2I1	ASP.DA.ILE.	ASP.DA.HOH.ILE.	✘	4	6	2	✔
1DMU-CA-4	CA	Ca²⁺	A1D2I1	ASP.DA.ILE.	ASP.DA.HOH.ILE.	✘	4	6	2	✘
1DNW-CA-1	CA	Ca²⁺	D2F1S1T1	ASP.PHE.SER.THR.	ASP.PHE.SER.THR.	✘	5	5	2	✘
1DNU-CA-1	CA	Ca²⁺	D2F1S1T1	ASP.PHE.SER.THR.	ASP.PHE.SER.THR.	✘	5	5	2	✘