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
4YGO-CA-8	CA	Ca²⁺	E4	GLU.	GLU.	✔	4	4	2	✘
4YGO-CA-9	CA	Ca²⁺	E2N1P1	ASN.GLU.PRO.	ASN.GLU.HOH.PRO.	✔	4	5	2	✘
4YGO-CA-10	CA	Ca²⁺	E2N1P1	ASN.GLU.PRO.	ASN.GLU.HOH.PRO.	✔	4	5	2	✘
4YGO-CA-11	CA	Ca²⁺	E4	GLU.	GLU.	✔	4	4	2	✘
4YGO-CA-12	CA	Ca²⁺	E4	GLU.	GLU.	✔	4	4	2	✘
4YHX-CA-1	CA	Ca²⁺	A2C1E1	ALA.DA.DC.GLU.	ALA.DA.DC.GLU.HOH.	✘	4	6	3	✔
4YHX-CA-2	CA	Ca²⁺	A2C1E2T1	DA.DC.DT.GLU.	DA.DC.DT.GLU.	✘	6	6	3	✔
4YHX-CA-3	CA	Ca²⁺	A1E1G1T1	DA.DT.GLU.GLY.	DA.DT.GLU.GLY.HOH.	✘	4	6	3	✔
4YIS-CA-1	CA	Ca²⁺	A1D1T1	ALA.ASP.DT.	ALA.ASP.DT.HOH.	✘	3	6	2	✔
4YIS-CA-2	CA	Ca²⁺	D1E1G1T2	ASP.DT.GLU.GLY.	ASP.DT.GLU.GLY.HOH.	✘	5	7	3	✔
4YMD-CA-1	CA	Ca²⁺	D1E2N2X1	ASN.ASP.GLU.MAN.	ASN.ASP.GLU.MAN.	✘	6	6	2	✔
4YMD-CA-2	CA	Ca²⁺	D1E2N2X1	ASN.ASP.GLU.MAN.	ASN.ASP.GLU.MAN.	✘	6	6	2	✔
4Z03-CA-1	CA	Ca²⁺	E2X2	ADA.GLU.	ADA.GLU.HOH.	✘	4	5	2	✔
4YP3-CA-1	CA	Ca²⁺	D2E1T1	ASP.DT.GLU.	ASP.DCP.DT.GLU.HOH.	✘	4	6	2	✔
5D2A-CA-1	CA	Ca²⁺	D2G1N2	ASN.ASP.GLY.	ASP.GLU.ZDC.	✔	5	5	2	✘
5D2A-CA-2	CA	Ca²⁺	D2G1N2	ASN.ASP.GLY.	ASN.ASP.GLY.ZDC.	✔	5	6	2	✘
5CRG-CA-1	CA	Ca²⁺	D2	ASP.	ASP.HOH.	✔	2	7	2	✔
5CRG-CA-2	CA	Ca²⁺	D1E1	ASP.GLU.	ASP.GLU.HOH.	✔	2	6	2	✘
5CRG-CA-3	CA	Ca²⁺	D2	ASP.	ASP.HOH.	✔	2	7	2	✔
5CRG-CA-4	CA	Ca²⁺	D2E2	ASP.GLU.	ASP.GLU.HOH.	✔	4	5	2	✔