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
3FLK-MG-2	MG	Mg²⁺	D2	ASP.	ASP.HOH.OXL.	✔	2	5	2	✔
3G4T-MG-1	MG	Mg²⁺	A1E1	DA.GLU.	DA.GLU.PO4.	✘	2	3	2	✔
3G4T-MG-2	MG	Mg²⁺	E1G1	DG.GLU.	DG.GLU.PO4.	✘	2	3	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	✘
3K4I-MG-1	MG	Mg²⁺	D1E1	ASP.GLU.	ASP.GLU.HOH.	✔	2	6	2	✔
3K4I-MG-2	MG	Mg²⁺	D1E1	ASP.GLU.	ASP.GLU.HOH.	✔	2	6	2	✘
3K4I-MG-3	MG	Mg²⁺	D1E1	ASP.GLU.	ASP.GLU.HOH.	✔	2	6	2	✘
4BRF-MG-1	MG	Mg²⁺	S2	SER.	HOH.SER.	✔	2	5	2	✔
4CN2-MG-1	MG	Mg²⁺	G1K1	DG.LYS.	DG.HOH.LYS.	✘	2	3	2	✔
4CN2-MG-2	MG	Mg²⁺	A1D1	ASP.DA.	ASP.DA.HOH.	✘	2	3	2	✔
4CN2-MG-3	MG	Mg²⁺	G2	DG.GLY.	DG.GLY.	✘	2	2	2	✔
4HOT-MG-1	MG	Mg²⁺	E1X1	ATP.GLU.	ATP.GLU.HOH.	✘	2	5	2	✔
4HOR-MG-1	MG	Mg²⁺	E1X1	CTP.GLU.	CTP.GLU.HOH.	✘	2	5	2	✔
4HPT-MG-1	MG	Mg²⁺	D1X1	ASP.SEP.	ANP.ASN.ASP.HOH.	✘	2	5	2	✘
4HPU-MG-1	MG	Mg²⁺	D1X1	ASP.SEP.	ANP.ASP.HOH.SEP.	✘	2	5	2	✔
4IAD-MG-1	MG	Mg²⁺	D1X1	ASP.SEP.	ADP.ASP.HOH.SEP.	✘	2	5	2	✘
4IAF-MG-1	MG	Mg²⁺	D1X1	ASP.SEP.	ADP.ASP.HOH.SEP.	✘	2	5	2	✘