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
6VGC-CA-1	CA	Ca²⁺	D1Q3	ASP.GLN.	ASP.GLN.	✔	4	4	3	✔
7DQ6-CA-1	CA	Ca²⁺	D1L1	ASP.LEU.	ASP.LEU.	✔	2	2	2	✘
7DQ6-CA-2	CA	Ca²⁺	D1L1	ASP.LEU.	ASP.LEU.	✔	2	2	2	✘
7DQ5-CA-1	CA	Ca²⁺	D1L1	ASP.LEU.	ASP.LEU.	✔	2	2	2	✔
7DQ5-CA-2	CA	Ca²⁺	D1L1	ASP.LEU.	ASP.HOH.LEU.	✔	2	3	2	✘
7EZZ-CA-1	CA	Ca²⁺	R1S2	ARG.SER.	ARG.HOH.SER.	✔	3	4	2	✔
7EZZ-CA-2	CA	Ca²⁺	R1S2	ARG.SER.	ARG.SER.	✔	3	3	2	✔
7JMS-CA-1	CA	Ca²⁺	N1T1V1	ASN.THR.VAL.	ASN.THR.VAL.	✘	3	3	2	✔
7AZ1-CA-1	CA	Ca²⁺	E1K1Q1	GLN.GLU.LYS.	GLN.GLU.HOH.LYS.	✔	3	4	2	✘
7AZ1-CA-2	CA	Ca²⁺	E1K1Q1	GLN.GLU.LYS.	GLN.GLU.HOH.LYS.	✔	3	4	2	✘
7BZ0-CA-1	CA	Ca²⁺	E3N1X1	ASN.GLU.LGU.	ASN.GLU.HOH.LGU.	✘	5	6	2	✔
6YFA-CA-1	CA	Ca²⁺	E2	GLU.	GLU.	✔	2	2	2	✔
6YFA-CA-2	CA	Ca²⁺	E2	GLU.	GLU.	✔	2	2	2	✘
6YFA-CA-3	CA	Ca²⁺	E2	GLU.	GLU.	✔	2	2	2	✘
6YFA-CA-4	CA	Ca²⁺	E2	GLU.	GLU.	✔	2	2	2	✘
6YFA-CA-5	CA	Ca²⁺	E2	GLU.	GLU.	✔	2	2	2	✘
6YFA-CA-6	CA	Ca²⁺	E2	GLU.	GLU.	✔	2	2	2	✘
6YFA-CA-7	CA	Ca²⁺	E2	GLU.	GLU.	✔	2	2	2	✘
6YFA-CA-8	CA	Ca²⁺	E2	GLU.	GLU.	✔	2	2	2	✘
6YFA-CA-9	CA	Ca²⁺	E2	GLU.	GLU.	✔	2	2	2	✘