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
3K1S-MG-1	MG	Mg²⁺	D3	ASP.	ASP.HOH.	✔	3	6	3	✔
3K1S-MG-2	MG	Mg²⁺	D3	ASP.	ASP.HOH.	✔	3	6	3	✘
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	✘
3JTC-MG-1	MG	Mg²⁺	E1X2	CGU.GLU.	CGU.GLU.HOH.	✘	3	4	2	✘
3KC2-MG-1	MG	Mg²⁺	G2Q2	GLN.GLY.	GLN.GLY.HOH.	✔	4	6	2	✔
3KD5-MG-1	MG	Mg²⁺	D2L1X1	4DG.ASP.LEU.	4DG.ASP.LEU.PPF.	✘	4	5	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	✔
4I28-MG-1	MG	Mg²⁺	A1D2	ASP.DA.	ASP.DA.HOH.	✘	3	5	2	✔
4HXG-MG-1	MG	Mg²⁺	E2K1	GLU.LYS.	GLU.HOH.LYS.	✔	3	6	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	✘