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
1T0L-CA-1	CA	Ca²⁺	D2	ASP.	ASP.HOH.ICT.	✔	2	4	2	✘
1T0L-CA-2	CA	Ca²⁺	D2	ASP.	ASP.HOH.ICT.	✔	2	4	2	✘
1T0I-CA-1	CA	Ca²⁺	D2E2	ASP.GLU.	ASP.GLU.HOH.	✔	4	6	2	✔
1T0I-CA-2	CA	Ca²⁺	D1E1	ASP.GLU.	ASP.GLU.HOH.	✔	2	5	2	✘
1T0I-CA-3	CA	Ca²⁺	D1E1	ASP.GLU.	ASP.GLU.HOH.	✔	2	5	2	✘
1T44-CA-1	CA	Ca²⁺	A1D1E1G1	ALA.ASP.GLU.GLY.	ALA.ASP.GLU.GLY.HOH.	✘	4	7	2	✘
2FZV-CA-1	CA	Ca²⁺	D2	ASP.	ASP.HOH.	✔	2	6	2	✔
2FZV-CA-2	CA	Ca²⁺	D2	ASP.	ASP.HOH.	✔	2	6	2	✘
2GE5-CA-1	CA	Ca²⁺	A1D2	ASP.DA.	ASP.DA.	✘	3	3	2	✘
2GGU-CA-1	CA	Ca²⁺	D1E2N2X1	ASN.ASP.GLC.GLU.	ASN.ASP.GLC.GLU.	✘	6	6	2	✔
2GGU-CA-2	CA	Ca²⁺	D1E2N2X1	ASN.ASP.GLC.GLU.	ASN.ASP.GLC.GLU.	✘	6	6	2	✔
2GGU-CA-3	CA	Ca²⁺	D1E2N2X1	ASN.ASP.GLC.GLU.	ASN.ASP.GLC.GLU.	✘	6	6	2	✔
2GIH-CA-1	CA	Ca²⁺	D2G1V1	ASP.DG.VAL.	ASP.HOH.VAL.	✘	4	4	2	✔
2GJV-CA-1	CA	Ca²⁺	N2	ASN.	ASN.HOH.	✔	2	5	2	✔
2GJV-CA-2	CA	Ca²⁺	N2	ASN.	ASN.HOH.	✔	2	5	2	✘
1XKD-CA-1	CA	Ca²⁺	D2	ASP.	ASP.HOH.ICT.	✔	2	5	2	✔
1XKD-CA-2	CA	Ca²⁺	D3	ASP.	ASP.HOH.ICT.	✔	3	7	2	✔
1WWS-CA-1	CA	Ca²⁺	Y2	TYR.	HOH.	✔	2	3	2	✔
2JG9-CA-1	CA	Ca²⁺	D1Q2Y1	ASP.GLN.TYR.	ASP.GLN.HOH.TYR.	✘	4	5	2	✘
2JG8-CA-1	CA	Ca²⁺	D1Q2Y1	ASP.GLN.TYR.	ASP.GLN.HOH.TYR.	✘	4	5	2	✘