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
4ZRV-CA-1	CA	Ca²⁺	D1E2N2X1	ASN.ASP.GLU.U8V.	ASN.ASP.GLU.U8V.	✘	6	6	2	✔
4ZRV-CA-2	CA	Ca²⁺	D1E2N2X1	ASN.ASP.GLU.U8V.	ASN.ASP.GLU.U8V.	✘	6	6	2	✔
4ZRV-CA-3	CA	Ca²⁺	D1E2N2X1	ASN.ASP.GLU.U8V.	ASN.ASP.GLU.U8V.	✘	6	6	2	✔
4ZRW-CA-1	CA	Ca²⁺	D1E2N2X1	ASN.ASP.GLC.GLU.	ASN.ASP.GLC.GLU.	✘	6	6	2	✔
5ESP-CA-1	CA	Ca²⁺	A1C1E1G1	DA.DC.GLU.GLY.	DA.DC.GLU.GLY.	✘	4	4	3	✔
5ESP-CA-2	CA	Ca²⁺	A1C1E1T1	ALA.DC.DT.GLU.	ALA.DC.DT.GLU.	✘	4	4	3	✔
5EWE-CA-1	CA	Ca²⁺	D1E1T1	ASP.DT.GLU.	ASP.CTP.DT.GLU.	✘	3	4	2	✔
2V3T-CA-1	CA	Ca²⁺	D2E1V1	ASP.GLU.VAL.	ASP.GLU.VAL.	✔	4	4	2	✔
2V3T-CA-2	CA	Ca²⁺	D2E1V1	ASP.GLU.VAL.	ASP.GLU.VAL.	✔	4	4	2	✘
2UVP-CA-1	CA	Ca²⁺	E2	GLU.	GLU.HOH.	✔	2	3	2	✔
2UZ0-CA-1	CA	Ca²⁺	L2	LEU.	HOH.LEU.	✔	2	6	2	✔
2UZ0-CA-2	CA	Ca²⁺	L2	LEU.	HOH.LEU.	✔	2	6	2	✘
3VDQ-CA-1	CA	Ca²⁺	R2	ARG.	ARG.HOH.	✔	2	6	2	✘
3VDQ-CA-2	CA	Ca²⁺	R2	ARG.	ARG.HOH.	✔	2	6	2	✘
3VDR-CA-1	CA	Ca²⁺	R2	ARG.	ARG.	✔	2	2	2	✘
4EBD-CA-1	CA	Ca²⁺	C1I1K1	DC.ILE.LYS.	DC.ILE.LYS.	✘	3	3	2	✘
4EBE-CA-1	CA	Ca²⁺	C1K1	DC.LYS.	DC.HOH.LYS.	✘	2	3	2	✔
4EFJ-CA-1	CA	Ca²⁺	E1G1T2	DT.GLU.GLY.	DT.GLU.GLY.	✘	4	4	3	✔
4EFJ-CA-2	CA	Ca²⁺	A1E1G1T1	ALA.DG.DT.GLU.	ALA.DG.DT.GLU.	✘	4	4	3	✔
4EGY-CA-1	CA	Ca²⁺	G1T2	DT.GLY.	DT.GLY.HOH.	✘	3	4	3	✔