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
3C9R-MG-1	MG	Mg²⁺	D1N1	ASN.ASP.	ASP.ATP.	✔	2	4	2	✘
3C9T-MG-1	MG	Mg²⁺	D1N1	ASN.ASP.	ACP.ASN.ASP.TPS.	✔	2	4	2	✘
3C9U-MG-1	MG	Mg²⁺	D1N1	ASN.ASP.	ADP.ASP.HOH.	✔	2	5	2	✔
3CVJ-MG-1	MG	Mg²⁺	E2	GLU.	GLU.	✔	2	2	2	✔
4CHG-MG-1	MG	Mg²⁺	D1E1	ASP.GLU.	ASP.GLU.HOH.	✘	2	6	2	✔
4CHG-MG-2	MG	Mg²⁺	D1E1	ASP.GLU.	ASP.GLU.HOH.	✘	2	6	2	✘
4DHR-MG-1	MG	Mg²⁺	E1Q1	GLN.GLU.	GLN.GLU.HOH.	✔	2	3	2	✔
4DHR-MG-2	MG	Mg²⁺	E1Q1	GLN.GLU.	GLN.GLU.HOH.	✔	2	3	2	✘
4DHU-MG-1	MG	Mg²⁺	E1Q1	GLN.GLU.	GLN.GLU.HOH.	✔	2	4	2	✘
4DHU-MG-2	MG	Mg²⁺	E1Q1	GLN.GLU.	GLN.GLU.HOH.	✔	2	4	2	✘
2W8K-MG-1	MG	Mg²⁺	D1X1	ASP.DOC.	ASP.DOC.	✘	2	2	2	✘
2WDZ-MG-1	MG	Mg²⁺	W2	TRP.	HOH.TRP.	✔	2	6	2	✘
2WDZ-MG-2	MG	Mg²⁺	W2	TRP.	HOH.TRP.	✔	2	6	2	✘
3R1I-MG-1	MG	Mg²⁺	P2	PRO.	HOH.PRO.	✔	2	6	2	✔
3R1I-MG-2	MG	Mg²⁺	P2	PRO.	HOH.PRO.	✔	2	6	2	✘
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	✘
3FD5-MG-1	MG	Mg²⁺	D1Q1	ASP.GLN.	AP2.ASP.GLN.HOH.PO4.	✔	2	5	2	✔
3FD5-MG-2	MG	Mg²⁺	D1Q1	ASP.GLN.	AP2.ASP.GLN.HOH.PO4.	✔	2	5	2	✘
3FLK-MG-1	MG	Mg²⁺	D2	ASP.	ASP.HOH.OXL.	✔	2	5	2	✔