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
7RC6-NA-1	NA	Na⁺	N1P1X1	ASN.DSG.PRO.	ASN.DSG.HOH.PRO.	✘	3	4	2	✔
7RCG-CA-1	CA	Ca²⁺	A1C2D1	ALA.ASP.DC.	ALA.ASP.DC.HOH.	✘	4	6	3	✔
7RCG-CA-2	CA	Ca²⁺	C1E1G1T1	DC.DT.GLU.GLY.	DC.DT.GLU.GLY.HOH.	✘	4	6	3	✔
7RBF-NA-1	NA	Na⁺	G1I1T1V1	DG.ILE.THR.VAL.	DG.HOH.ILE.THR.VAL.	✘	4	6	2	✔
7RBE-NA-1	NA	Na⁺	G1I1T1V1	DG.ILE.THR.VAL.	DG.HOH.ILE.THR.VAL.	✘	4	6	2	✘
7AKK-MG-1	MG	Mg²⁺	D1S2T1	ASP.SER.THR.	ASP.SER.THR.	✘	4	4	2	✔
7ADI-MG-1	MG	Mg²⁺	T4	THR.	THR.	✔	4	4	4	✘
8DF9-MG-1	MG	Mg²⁺	I3T1	DT.ILE.	DT.ILE.	✘	4	4	2	✔
8DF9-MG-2	MG	Mg²⁺	G1K1T1	DG.LYS.THR.	DG.LYS.THR.	✘	3	3	2	✔
8DF9-MG-3	MG	Mg²⁺	G1I1L1V1	DG.ILE.LEU.VAL.	DG.ILE.LEU.VAL.	✘	4	4	2	✔
7XM1-BA-1	BA	Ba²⁺	D1V1	ASP.VAL.	ASP.VAL.	✔	2	2	2	✔
7XM1-BA-2	BA	Ba²⁺	D1V1	ASP.VAL.	ASP.VAL.	✔	2	2	2	✔
7XM1-BA-3	BA	Ba²⁺	D1V1	ASP.VAL.	ASP.VAL.	✔	2	2	2	✘
7XM1-BA-4	BA	Ba²⁺	D1V1	ASP.VAL.	ASP.VAL.	✔	2	2	2	✘
7XM1-BA-5	BA	Ba²⁺	D1V1	ASP.VAL.	ASP.VAL.	✔	2	2	2	✘
8CU0-NA-1	NA	Na⁺	D1E1G1N1	ASN.ASP.DG.GLU.	ASN.ASP.DG.GLU.	✘	4	4	2	✔
8CTY-NA-1	NA	Na⁺	D1E1G1N1	ASN.ASP.DG.GLU.	ASN.ASP.DG.GLU.HOH.	✘	4	5	2	✔
7R3S-NI-1	NI	Ni²⁺	H2	HIS.	HIS.	✔	2	2	2	✔
7QF7-NA-1	NA	Na⁺	K1X1	GLC.LYS.	GLC.HOH.LYS.	✘	2	6	2	✔
7PU0-CU-1	CU	Cu²⁺	H2	HIS.	HIS.	✔	2	2	2	✘