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
5L8G-CA-19	CA	Ca²⁺	E2Y1	GLU.TYR.	GLU.TYR.	✔	3	3	2	✘
5L9X-CA-1	CA	Ca²⁺	A1D2M1	ASP.DA.MET.	ASP.DA.DPO.DTP.MET.	✘	4	6	2	✘
5LDT-CA-1	CA	Ca²⁺	D1G1N2	ASN.ASP.GLY.	ASN.ASP.GLY.	✔	4	4	2	✔
5LDT-CA-2	CA	Ca²⁺	D1G1N2	ASN.ASP.GLY.	ASN.ASP.GLY.	✔	4	4	2	✘
5LDT-CA-3	CA	Ca²⁺	D1G1N2	ASN.ASP.GLY.	ASN.ASP.GLY.	✔	4	4	2	✔
5JUM-CA-1	CA	Ca²⁺	D2E1T1	ASP.DT.GLU.	ASP.DCP.DT.GLU.	✘	4	5	2	✔
5KFI-CA-1	CA	Ca²⁺	A1D2M1	ASP.DA.MET.	ASP.DA.DPO.DTP.MET.	✘	4	6	2	✘
5KIQ-CA-1	CA	Ca²⁺	E2	GLU.	GLU.HOH.	✔	2	6	2	✘
5JPV-CA-1	CA	Ca²⁺	D2E1N1Q1X1	ASN.ASP.GAL.GLN.GLU.	ASN.ASP.GAL.GLN.GLU.	✘	6	6	2	✔
5JPV-CA-2	CA	Ca²⁺	D2E1N1Q1X1	ASN.ASP.GAL.GLN.GLU.	ASN.ASP.GAL.GLN.GLU.	✘	6	6	2	✔
5QJ3-CA-1	CA	Ca²⁺	D2F1S1T1	ASP.PHE.SER.THR.	ASP.PHE.SER.THR.	✘	5	5	2	✘
5QJ2-CA-1	CA	Ca²⁺	D2F1S1T1	ASP.PHE.SER.THR.	ASP.PHE.SER.THR.	✘	5	5	2	✘
5KK7-CA-1	CA	Ca²⁺	A1X1	ALA.MAN.	ALA.HOH.MAN.	✘	2	6	2	✔
5KN1-CA-1	CA	Ca²⁺	D1E1	ASP.GLU.	ASP.GLU.	✔	2	2	2	✔
5KN1-CA-2	CA	Ca²⁺	D2	ASP.	ASP.	✔	2	2	2	✔
5KN1-CA-3	CA	Ca²⁺	D2	ASP.	ASP.HOH.	✔	2	6	2	✘
5KN1-CA-4	CA	Ca²⁺	D2E1	ASP.GLU.	ASP.HOH.	✔	3	4	2	✘
5KN1-CA-5	CA	Ca²⁺	D1E2	ASP.GLU.	ASP.GLU.HOH.	✔	3	6	2	✔
5KN1-CA-6	CA	Ca²⁺	E3	GLU.	ASP.GLU.HOH.	✔	3	6	2	✘
5KN1-CA-7	CA	Ca²⁺	D2E1	ASP.GLU.	GLU.HOH.	✔	3	5	2	✔