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
3PCQ-CA-3	CA	Ca²⁺	D1F1P1	ASP.PHE.PRO.	ASP.HOH.PHE.PRO.	✔	3	7	2	✘
3Q08-CA-1	CA	Ca²⁺	D1E1T1	ASP.GLU.THR.	ASP.GLU.THR.	✔	3	3	2	✘
3Q08-CA-2	CA	Ca²⁺	D1E1T1	ASP.GLU.THR.	ASP.GLU.THR.	✔	3	3	2	✘
3Q08-CA-3	CA	Ca²⁺	D1E1T1	ASP.GLU.THR.	ASP.GLU.THR.	✔	3	3	2	✘
3Q08-CA-4	CA	Ca²⁺	D1E1T1	ASP.GLU.THR.	ASP.GLU.THR.	✔	3	3	2	✘
3Q08-CA-5	CA	Ca²⁺	D1E1T1	ASP.GLU.THR.	ASP.GLU.THR.	✔	3	3	2	✘
3Q09-CA-1	CA	Ca²⁺	D1E1T1	ASP.GLU.THR.	ASP.GLU.THR.	✔	3	3	2	✔
3Q09-CA-2	CA	Ca²⁺	D1E1T1	ASP.GLU.THR.	ASP.GLU.THR.	✔	3	3	2	✘
3Q09-CA-3	CA	Ca²⁺	D1E1T1	ASP.GLU.THR.	ASP.GLU.THR.	✔	3	3	2	✘
3Q09-CA-4	CA	Ca²⁺	D1E1T1	ASP.GLU.THR.	ASP.GLU.THR.	✔	3	3	2	✘
3Q09-CA-5	CA	Ca²⁺	D1E1T1	ASP.GLU.THR.	ASP.GLU.THR.	✔	3	3	2	✘
4Y6P-CA-1	CA	Ca²⁺	D1L1Q1	ASP.GLN.LEU.	ASP.GLN.HOH.LEU.	✔	3	7	2	✔
4XPI-CA-1	CA	Ca²⁺	D2E1R1	ARG.ASP.GLU.	ARG.ASP.GLU.HOH.	✔	4	6	2	✘
4XPI-CA-2	CA	Ca²⁺	D2E1R1	ARG.ASP.GLU.	ARG.ASP.GLU.HOH.	✔	4	6	2	✘
5L89-CA-1	CA	Ca²⁺	E2	GLU.	GLU.HOH.	✔	2	3	2	✘
5L8R-CA-1	CA	Ca²⁺	G1I1	GLY.ILE.	GLY.ILE.	✘	2	2	2	✔
5L8B-CA-1	CA	Ca²⁺	E4	GLU.	GLU.HOH.	✔	4	6	2	✘
5L8B-CA-2	CA	Ca²⁺	E3	GLU.	GLU.HOH.	✔	3	4	2	✔
5L8B-CA-3	CA	Ca²⁺	E2	GLU.	GLU.HOH.	✔	2	4	2	✔
5L8B-CA-4	CA	Ca²⁺	E4	GLU.	GLU.HOH.	✔	4	6	2	✘