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
1OPO-CA-57	CA	Ca²⁺	D3N1	ASN.ASP.	ASN.ASP.	✔	4	4	2	✘
1OPO-CA-58	CA	Ca²⁺	D3N1	ASN.ASP.	ASN.ASP.	✔	4	4	2	✘
1OPO-CA-59	CA	Ca²⁺	D3N1	ASN.ASP.	ASN.ASP.	✔	4	4	2	✘
1OPO-CA-60	CA	Ca²⁺	D3N1	ASN.ASP.	ASN.ASP.	✔	4	4	2	✘
1P2P-CA-1	CA	Ca²⁺	E2S2	GLU.SER.	GLU.SER.	✔	4	4	2	✘
1OUR-CA-1	CA	Ca²⁺	D2G1N2	ASN.ASP.GLY.	ASN.ASP.GLY.MAN.	✔	5	6	2	✘
1OUR-CA-2	CA	Ca²⁺	D2G1N2	ASN.ASP.GLY.	ASN.ASP.GLY.MAN.	✔	5	6	2	✘
1OUR-CA-3	CA	Ca²⁺	D2G1N2	ASN.ASP.GLY.	ASN.ASP.GLY.MAN.	✔	5	6	2	✘
1OUR-CA-4	CA	Ca²⁺	D2G1N2	ASN.ASP.GLY.	ASN.ASP.GLY.MAN.	✔	5	6	2	✘
1OU9-CA-1	CA	Ca²⁺	A1E1Q1T1	ALA.GLN.GLU.THR.	ALA.GLN.GLU.HOH.THR.	✔	4	6	2	✔
1OU9-CA-2	CA	Ca²⁺	A1E1Q1T1	ALA.GLN.GLU.THR.	ALA.GLN.GLU.HOH.THR.	✔	4	6	2	✘
1OU9-CA-3	CA	Ca²⁺	A1E1Q1T1	ALA.GLN.GLU.THR.	ALA.GLN.GLU.HOH.THR.	✔	4	6	2	✘
1OU9-CA-4	CA	Ca²⁺	A1E1Q1T1	ALA.GLN.GLU.THR.	ALA.GLN.GLU.HOH.THR.	✔	4	6	2	✘
1OVS-CA-1	CA	Ca²⁺	D2G1N2	ASN.ASP.GLY.	ASN.ASP.GLY.MAN.	✔	5	6	2	✘
1OVP-CA-1	CA	Ca²⁺	D2G1N2	ASN.ASP.GLY.	ASN.ASP.BDF.GLY.	✔	5	6	2	✘
1OVP-CA-2	CA	Ca²⁺	D2G1N2	ASN.ASP.GLY.	ASN.ASP.BDF.GLY.	✔	5	6	2	✘
1OVP-CA-3	CA	Ca²⁺	D2G1N2	ASN.ASP.GLY.	ASN.ASP.BDF.GLY.	✔	5	6	2	✘
1OVP-CA-4	CA	Ca²⁺	D2G1N2	ASN.ASP.GLY.	ASN.ASP.BDF.GLY.	✔	5	6	2	✘
1OUX-CA-1	CA	Ca²⁺	D2G1N2	ASN.ASP.GLY.	ASN.ASP.GLY.HOH.	✔	5	7	2	✘
1OUX-CA-2	CA	Ca²⁺	D2G1N2	ASN.ASP.GLY.	ASN.ASP.GLY.HOH.	✔	5	7	2	✘