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
3EUE-MG-1	MG	Mg²⁺	D1S1	ASP.SER.	ASP.SER.	✔	2	2	2	✔
3EUE-MG-2	MG	Mg²⁺	D1S1	ASP.SER.	ASP.SER.	✔	2	2	2	✘
3H9F-MG-1	MG	Mg²⁺	X2	TPO.	TPO.	✔	2	2	2	✔
3H9F-MG-2	MG	Mg²⁺	X2	TPO.	TPO.	✔	2	2	2	✘
3H9F-MG-3	MG	Mg²⁺	X2	TPO.	TPO.	✔	2	2	2	✘
3H9F-MG-4	MG	Mg²⁺	X2	TPO.	TPO.	✔	2	2	2	✘
4CN2-MG-3	MG	Mg²⁺	G2	DG.GLY.	DG.GLY.	✘	2	2	2	✔
4NNW-MG-1	MG	Mg²⁺	D1Q1	ASP.GLN.	ASP.GLN.	✘	2	2	2	✔
4QLQ-MG-1	MG	Mg²⁺	A1D2S1	ALA.ASP.SER.	GLN.HOH.	✘	4	2	2	✘
4R02-MG-1	MG	Mg²⁺	A1D2S1	ALA.ASP.SER.	HOH.	✘	4	2	2	✘
4R17-MG-2	MG	Mg²⁺	D2I1S1	ASP.ILE.SER.	HOH.	✘	4	2	2	✔
4QV1-MG-1	MG	Mg²⁺	A1D2S1	ALA.ASP.SER.	GLN.HOH.	✘	4	2	2	✘
4QV0-MG-1	MG	Mg²⁺	A1D2S1	ALA.ASP.SER.	ASP.HOH.	✘	4	2	2	✘
4QWR-MG-2	MG	Mg²⁺	D1Q1	ASP.GLN.	ASP.GLN.	✘	2	2	2	✘
4QZ6-MG-2	MG	Mg²⁺	D1Q1	ASP.GLN.	ASP.GLN.	✘	2	2	2	✘
4QZW-MG-2	MG	Mg²⁺	D1Q1	ASP.GLN.	ASP.GLN.	✘	2	2	2	✘
4QZX-MG-2	MG	Mg²⁺	D1Q1	ASP.GLN.	ASP.GLN.	✘	2	2	2	✘
3MG7-MG-1	MG	Mg²⁺	S1Y1	SER.TYR.	SER.TYR.	✘	2	2	2	✔
3MG8-MG-1	MG	Mg²⁺	A1S1	ALA.SER.	ALA.SER.	✘	2	2	2	✔
3N4Q-MG-1	MG	Mg²⁺	D1N1	ASN.ASP.	ASN.ASP.	✔	2	2	2	✔