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
5ZL1-CA-5	CA	Ca²⁺	A2E1P1	ALA.GLU.PRO.	ALA.GLU.PRO.	✔	4	4	2	✘
5ZL1-CA-6	CA	Ca²⁺	A2E1P1	ALA.GLU.PRO.	ALA.GLU.PRO.	✔	4	4	2	✘
6A56-CA-1	CA	Ca²⁺	C1D1E1M1N1X1	ASN.ASP.CYS.GAL.GLU.MET.	ASN.ASP.CYS.GAL.GLU.MET.	✘	6	6	2	✔
6A56-CA-2	CA	Ca²⁺	C1D1E1M1N1X1	ASN.ASP.CYS.GAL.GLU.MET.	ASN.ASP.CYS.GAL.GLU.MET.	✘	6	6	2	✔
6AJ8-CA-1	CA	Ca²⁺	D3	ASP.	ASP.HOH.	✔	3	4	2	✘
6AJ8-CA-2	CA	Ca²⁺	D3	ASP.	ASP.HOH.	✔	3	4	2	✘
6AJA-CA-1	CA	Ca²⁺	D2	ASP.	ASP.	✔	2	2	2	✘
6AJC-CA-1	CA	Ca²⁺	D3	ASP.	ASP.ICT.	✔	3	4	2	✘
6AJC-CA-2	CA	Ca²⁺	D3	ASP.	ASP.HOH.ICT.	✔	3	5	2	✘
5OLS-CA-1	CA	Ca²⁺	D4X1	AQA.ASP.	AQA.ASP.HOH.	✘	5	6	2	✔
5OLS-CA-2	CA	Ca²⁺	D2G1X1	AQA.ASP.GLY.	AQA.ASP.GLY.HOH.	✘	4	5	2	✔
5P2P-CA-1	CA	Ca²⁺	E4S2	GLU.SER.	GLU.SER.	✔	6	6	2	✘
5OXS-CA-1	CA	Ca²⁺	D1E2N2X1	ASN.ASP.GLC.GLU.	ASN.ASP.GLC.GLU.	✘	6	6	2	✔
5OXS-CA-2	CA	Ca²⁺	D1E2N2X1	ASN.ASP.GLU.GMH.	ASN.ASP.GLU.GMH.	✘	6	6	2	✔
5OXS-CA-3	CA	Ca²⁺	D1E2N2X1	ASN.ASP.GLU.GMH.	ASN.ASP.GLU.GMH.	✘	6	6	2	✔
5OXR-CA-1	CA	Ca²⁺	D1E2N2X1	ASN.ASP.GLU.GMH.	ASN.ASP.GLU.GMH.	✘	6	6	2	✔
5OXR-CA-2	CA	Ca²⁺	D1E2N2X1	ASN.ASP.GLU.GMH.	ASN.ASP.GLU.GMH.	✘	6	6	2	✔
5MUA-CA-1	CA	Ca²⁺	D4E1	ASP.GLU.	ASP.GLU.HOH.	✔	5	6	2	✔
5MUA-CA-2	CA	Ca²⁺	D3S1	ASP.SER.	ASP.E64.HOH.SER.	✔	4	6	2	✔
5MUA-CA-3	CA	Ca²⁺	D4E1	ASP.GLU.	ASP.GLU.HOH.	✔	5	6	2	✔