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
1BP3-ZN-1	ZN	Zn²⁺	H2	HIS.	HIS.	✘	2	2	2	✔
1BP6-K-1	K	K⁺	S2W2	SER.TRP.	SER.TRP.	✔	4	4	2	✔
1BP7-CA-1	CA	Ca²⁺	C1D1G2	ASP.DC.DG.GLY.	ASP.DC.DG.GLY.	✘	4	4	4	✔
1BP7-CA-2	CA	Ca²⁺	A1D1G2	ASP.DA.DG.GLY.	ASP.DA.DG.GLY.HOH.	✘	4	5	4	✔
1BPJ-K-1	K	K⁺	S2W2	SER.TRP.	SER.TRP.	✔	4	4	2	✘
1BPX-NA-1	NA	Na⁺	C1K1L1V1	DC.LEU.LYS.VAL.	DC.HOH.LEU.LYS.VAL.	✘	4	5	2	✔
1BPX-NA-2	NA	Na⁺	G1I1T1V1	DG.ILE.THR.VAL.	DG.HOH.ILE.THR.VAL.	✘	4	6	2	✘
1BPY-NA-1	NA	Na⁺	G1I1T1V1	DG.ILE.THR.VAL.	DG.ILE.THR.VAL.	✘	4	4	2	✘
1BPY-NA-2	NA	Na⁺	C1K1L1V1	DC.LEU.LYS.VAL.	DC.HOH.LEU.LYS.VAL.	✘	4	6	2	✘
1BPZ-NA-1	NA	Na⁺	G1I1T1V1	DG.ILE.THR.VAL.	DG.HOH.ILE.THR.VAL.	✘	4	5	2	✘
1BPZ-NA-2	NA	Na⁺	C1K1L1V1	DC.LEU.LYS.VAL.	DC.HOH.LEU.LYS.VAL.	✘	4	5	2	✘
1BSU-CA-1	CA	Ca²⁺	D2X1	ASP.DI.	ASP.DI.HOH.	✘	3	6	2	✔
1BSU-CA-2	CA	Ca²⁺	D2X1	ASP.DI.	ASP.DI.HOH.	✘	3	6	2	✔
1C0F-CA-1	CA	Ca²⁺	A1D1E1G1	ALA.ASP.GLU.GLY.	ALA.ASP.GLU.GLY.HOH.	✘	4	6	2	✘
1C0G-CA-1	CA	Ca²⁺	A1D1E1G1	ALA.ASP.GLU.GLY.	ALA.ASP.GLU.GLY.HOH.	✘	4	6	2	✘
1C3H-CA-1	CA	Ca²⁺	D3N1Q1V1	ASN.ASP.GLN.VAL.	ASN.ASP.GLN.VAL.	✔	6	6	2	✔
1C3H-CA-2	CA	Ca²⁺	D3N1Q1V1	ASN.ASP.GLN.VAL.	ASN.ASP.GLN.VAL.	✔	6	6	2	✘
1C3H-CA-3	CA	Ca²⁺	D3N1Q1V1	ASN.ASP.GLN.VAL.	ASN.ASP.GLN.VAL.	✔	6	6	2	✘
1C8D-CA-1	CA	Ca²⁺	D2	ASP.	ASP.	✔	2	2	2	✘
1C8D-CA-10	CA	Ca²⁺	D2	ASP.	ASP.	✔	2	2	2	✘