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
3RBZ-CA-9	CA	Ca²⁺	D1E2R1	ARG.ASP.GLU.	ARG.ASP.GLU.	✔	4	4	2	✘
3RBZ-CA-10	CA	Ca²⁺	D1E2R1	ARG.ASP.GLU.	ARG.ASP.GLU.	✔	4	4	2	✘
3RBZ-CA-11	CA	Ca²⁺	D1E1G1	ASP.GLU.GLY.	ASP.GLU.GLY.	✔	3	3	2	✔
3RBZ-CA-12	CA	Ca²⁺	D1E1G1	ASP.GLU.GLY.	ASP.GLU.GLY.	✔	3	3	2	✘
3RBZ-CA-13	CA	Ca²⁺	D1E2	ASP.GLU.	ASP.GLU.	✔	3	3	2	✘
3RBZ-CA-14	CA	Ca²⁺	D1E2	ASP.GLU.	ASP.GLU.	✔	3	3	2	✘
3RBZ-CA-15	CA	Ca²⁺	D1E1G1	ASP.GLU.GLY.	ASP.GLU.GLY.	✔	3	3	2	✘
3RBZ-CA-16	CA	Ca²⁺	D1E1G1	ASP.GLU.GLY.	ASP.GLU.GLY.	✔	3	3	2	✘
3HZB-CA-1	CA	Ca²⁺	D2I2	ASP.ILE.	ASP.HOH.ILE.	✔	4	6	2	✔
3IA7-CA-1	CA	Ca²⁺	E1L1Q1	GLN.GLU.LEU.	GLN.GLU.HOH.LEU.	✔	3	5	2	✔
3IA7-CA-2	CA	Ca²⁺	E1L1Q1	GLN.GLU.LEU.	GLN.GLU.HOH.LEU.	✔	3	5	2	✘
3IKN-CA-1	CA	Ca²⁺	E3	GLU.	GLU.HOH.	✔	3	6	3	✘
3IKP-CA-1	CA	Ca²⁺	E3	GLU.	GLU.HOH.	✔	3	6	3	✘
3IKQ-CA-1	CA	Ca²⁺	E3	GLU.	GLU.HOH.	✔	3	6	3	✘
3IKR-CA-1	CA	Ca²⁺	E3	GLU.	GLU.HOH.	✔	3	6	3	✘
3IUC-CA-1	CA	Ca²⁺	D1G1H1	ASP.GLY.HIS.	ASP.GLY.HIS.HOH.	✔	3	6	2	✘
3C0X-CA-1	CA	Ca²⁺	C1T1	DC.DT.	DC.DT.HOH.	✘	2	5	2	✔
3C0X-CA-2	CA	Ca²⁺	A1C1D2	ASP.DA.DC.	ASP.DA.DC.HOH.	✘	4	6	3	✔
3C0X-CA-3	CA	Ca²⁺	C2D2	ASP.DC.	ASP.DC.HOH.	✘	4	5	3	✔
3C25-CA-1	CA	Ca²⁺	E1G1	DG.GLU.	DG.GLU.HOH.	✘	2	3	2	✔