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
1EZW-MG-1	MG	Mg²⁺	S2T2	SER.THR.	HOH.SER.THR.	✔	4	6	2	✔
1EZW-MG-2	MG	Mg²⁺	S2T2	SER.THR.	HOH.SER.THR.	✔	4	6	2	✔
1FIU-MG-1	MG	Mg²⁺	C1D1	ASP.DC.	ACY.ASP.DC.HOH.	✘	2	6	2	✔
1FIU-MG-2	MG	Mg²⁺	C1D1	ASP.DC.	ACY.ASP.DC.HOH.	✘	2	6	2	✘
1FIU-MG-3	MG	Mg²⁺	C1D1	ASP.DC.	ACY.ASP.DC.HOH.	✘	2	6	2	✘
1FIU-MG-4	MG	Mg²⁺	C1D1	ASP.DC.	ACY.ASP.DC.HOH.	✘	2	6	2	✔
1FIU-MG-5	MG	Mg²⁺	C2D1	ASP.CYS.DC.	ACY.ASP.CYS.DC.HOH.	✘	3	6	2	✔
1FIU-MG-6	MG	Mg²⁺	C2D1	ASP.CYS.DC.	ACY.ASP.CYS.DC.HOH.	✘	3	6	2	✘
1FIU-MG-7	MG	Mg²⁺	C2D1	ASP.CYS.DC.	ACY.ASP.CYS.DC.HOH.	✘	3	6	2	✘
1FIU-MG-8	MG	Mg²⁺	C2D1	ASP.CYS.DC.	ACY.ASP.CYS.DC.HOH.	✘	3	6	2	✘
1G29-NA-1	NA	Na⁺	E1G1S1	GLU.GLY.SER.	GLU.GLY.SER.	✔	3	3	2	✔
1G29-NA-2	NA	Na⁺	E1G1S1	GLU.GLY.SER.	GLU.GLY.SER.	✔	3	3	2	✘
1G29-NA-3	NA	Na⁺	A1E1	ALA.GLU.	GLU.HOH.	✔	2	3	2	✔
1G29-NA-4	NA	Na⁺	A1E1	ALA.GLU.	GLU.HOH.	✔	2	3	2	✘
1G29-NA-5	NA	Na⁺	D1S1	ASP.SER.	GLU.HOH.	✔	2	3	2	✔
1G29-NA-6	NA	Na⁺	D1S1	ASP.SER.	GLU.HOH.	✔	2	3	2	✔
1G75-K-1	K	K⁺	T2	DT.	DT.HOH.	✔	2	5	2	✔
1G97-NA-1	NA	Na⁺	N3	ASN.	ASN.HOH.	✔	3	6	3	✔
1G9Z-MG-1	MG	Mg²⁺	A1C1D2G2	ASP.DA.DC.DG.	ASP.DA.DC.DG.	✘	6	6	6	✔
1CW0-MG-1	MG	Mg²⁺	C1D1T1	ASP.DC.DT.	ASP.DC.DT.HOH.	✘	3	6	3	✔