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
5IJ1-CA-1	CA	Ca²⁺	E2	GLU.	GLU.HOH.	✔	2	6	2	✘
5IJ3-CA-1	CA	Ca²⁺	E2	GLU.	GLU.HOH.	✔	2	6	2	✘
5IJ2-CA-1	CA	Ca²⁺	E2	GLU.	GLU.HOH.	✔	2	6	2	✘
5IK5-CA-1	CA	Ca²⁺	D2I1L1X1	ASP.BDP.ILE.LEU.	ASP.BDP.HOH.ILE.LEU.	✘	5	7	2	✔
5IIY-CA-1	CA	Ca²⁺	E2	GLU.	GLU.HOH.	✔	2	6	2	✔
5INQ-CA-1	CA	Ca²⁺	C1E1	DC.GLU.	DC.GLU.HOH.	✘	2	6	2	✔
5INQ-CA-2	CA	Ca²⁺	C1E1	DC.GLU.	DC.GLU.HOH.	✘	2	6	2	✘
6Y0V-CA-1	CA	Ca²⁺	D2G1N2	ASN.ASP.GLY.	ASN.ASP.GLY.ZDC.	✔	5	6	2	✘
6Y0V-CA-2	CA	Ca²⁺	D2G1N2	ASN.ASP.GLY.	ASP.GLU.ZDC.	✔	5	5	2	✘
6Y0V-CA-3	CA	Ca²⁺	D2G1N2	ASN.ASP.GLY.	ASN.ASP.GLY.ZDC.	✔	5	6	2	✘
6Y0V-CA-4	CA	Ca²⁺	D2G1N2	ASN.ASP.GLY.	ASP.GLU.ZDC.	✔	5	5	2	✘
6Y0U-CA-1	CA	Ca²⁺	D2G1N2	ASN.ASP.GLY.	ASP.GLU.ZDC.	✔	5	5	2	✘
6Y0U-CA-2	CA	Ca²⁺	D2G1N2	ASN.ASP.GLY.	ASN.ASP.GLY.ZDC.	✔	5	6	2	✘
6Y0U-CA-3	CA	Ca²⁺	D2G1N2	ASN.ASP.GLY.	ASP.GLU.ZDC.	✔	5	5	2	✘
6Y0U-CA-4	CA	Ca²⁺	D2G1N2	ASN.ASP.GLY.	ASN.ASP.GLY.ZDC.	✔	5	6	2	✘
6Y0W-CA-1	CA	Ca²⁺	D2G1N2	ASN.ASP.GLY.	ASP.GLU.ZDC.	✔	5	5	2	✘
6Y0W-CA-2	CA	Ca²⁺	D2G1N2	ASN.ASP.GLY.	ASN.ASP.GLY.ZDC.	✔	5	6	2	✘
6XQN-CA-1	CA	Ca²⁺	E4	GLU.	GLU.	✔	4	4	4	✘
6X4S-CA-1	CA	Ca²⁺	E4	GLU.	GLU.	✔	4	4	4	✔
6X77-CA-1	CA	Ca²⁺	D2E1G1	ASP.DG.GLU.	ASP.DCP.DG.GLU.	✘	4	5	2	✔