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
3E54-MG-3	MG	Mg²⁺	A2E1G1	ALA.DA.DG.GLU.	ALA.DA.DG.GLU.	✘	4	4	4	✔
3DV4-MG-1	MG	Mg²⁺	D1E1	ASP.GLU.	ASP.GLU.HOH.	✘	2	5	2	✔
3DK5-MG-1	MG	Mg²⁺	D3	ASP.	ASP.HOH.	✔	3	4	3	✔
3DK5-MG-2	MG	Mg²⁺	D2S1	ASP.SER.	ASP.SER.	✔	3	3	2	✘
3DK5-MG-3	MG	Mg²⁺	D2S1	ASP.SER.	ASP.SER.	✔	3	3	2	✘
3DK5-MG-4	MG	Mg²⁺	D2S1	ASP.SER.	ASP.SER.	✔	3	3	2	✘
3DLS-MG-1	MG	Mg²⁺	E1G2	GLU.GLY.	GLU.GLY.	✔	3	3	2	✔
3DLS-MG-2	MG	Mg²⁺	E1G1	GLU.GLY.	GLU.GLY.	✔	2	2	2	✔
3DLS-MG-3	MG	Mg²⁺	E1G1	GLU.GLY.	GLU.GLY.	✔	2	2	2	✔
3DLH-MG-1	MG	Mg²⁺	A1T1V1	DA.DT.VAL.	DA.DT.VAL.	✘	3	3	2	✘
3DXJ-MG-1	MG	Mg²⁺	D1K1	ASP.LYS.	ASP.HOH.LYS.	✘	2	3	2	✔
3EDL-MG-1	MG	Mg²⁺	T2	THR.	ANP.HOH.THR.	✔	2	7	2	✔
3EHB-MG-1	MG	Mg²⁺	D1E1	ASP.GLU.	ASP.GLU.HOH.	✘	2	5	2	✘
3EHW-MG-1	MG	Mg²⁺	D3	ASP.	DUP.HOH.	✔	3	4	3	✔
4G4S-MG-1	MG	Mg²⁺	D2I1S1	ASP.ILE.SER.	ASP.HOH.ILE.SER.	✘	4	5	2	✘
4G4S-MG-2	MG	Mg²⁺	D2I1S1	ASP.ILE.SER.	ASP.HOH.ILE.SER.	✘	4	5	2	✘
4G4S-MG-3	MG	Mg²⁺	A1D2S1	ALA.ASP.SER.	ALA.ASP.SER.	✘	4	4	2	✘
4G4S-MG-4	MG	Mg²⁺	A1D2S1	ALA.ASP.SER.	ALA.ASP.SER.	✘	4	4	2	✘
4G4S-MG-5	MG	Mg²⁺	E1S2	GLU.SER.	GLU.HOH.SER.	✘	3	6	2	✔
4G4S-MG-6	MG	Mg²⁺	E1S2	GLU.SER.	GLU.HOH.SER.	✘	3	6	2	✘