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
4DXP-MG-1	MG	Mg²⁺	E1N1	ASN.GLU.	ASN.GLU.	✔	2	2	2	✔
4DXP-MG-2	MG	Mg²⁺	E1N1	ASN.GLU.	ASN.GLU.	✔	2	2	2	✔
4DXP-MG-3	MG	Mg²⁺	E1N1	ASN.GLU.	ASN.GLU.	✔	2	2	2	✘
4DXP-MG-4	MG	Mg²⁺	E1N1	ASN.GLU.	ASN.GLU.	✔	2	2	2	✘
4MFA-MG-1	MG	Mg²⁺	D1T1	ASP.DT.	ASP.DT.	✘	2	2	2	✔
4KSA-MG-1	MG	Mg²⁺	H2	HIS.	HIS.	✔	2	2	2	✔
4BA9-MG-1	MG	Mg²⁺	D2	ASP.	ASP.	✔	2	2	2	✔
4BA9-MG-2	MG	Mg²⁺	D2	ASP.	ASP.	✔	2	2	2	✘
1YW0-MG-1	MG	Mg²⁺	A1Y1	ALA.TYR.	ALA.TYR.	✔	2	2	2	✔
1YW0-MG-2	MG	Mg²⁺	A1Y1	ALA.TYR.	ALA.TYR.	✔	2	2	2	✘
1YW0-MG-3	MG	Mg²⁺	Q1Y1	GLN.TYR.	GLN.TYR.	✔	2	2	2	✔
1ZNO-MG-1	MG	Mg²⁺	H2	HIS.	HIS.	✔	2	2	2	✔
2AMC-MG-1	MG	Mg²⁺	E2	GLU.	GLU.	✘	2	2	2	✘
2AMC-MG-2	MG	Mg²⁺	E2	GLU.	GLU.	✘	2	2	2	✘
1KDH-MG-1	MG	Mg²⁺	D1X1	ASP.BRU.	ASP.BRU.	✘	2	2	2	✔
1W5P-K-1	K	K⁺	D1R1	ARG.ASP.	ARG.ASP.	✔	2	2	2	✔
1W5P-K-2	K	K⁺	D1R1	ARG.ASP.	ARG.ASP.	✔	2	2	2	✘
1W5P-K-3	K	K⁺	D1R1	ARG.ASP.	ARG.ASP.	✔	2	2	2	✘
1W5P-K-4	K	K⁺	D1R1	ARG.ASP.	ARG.ASP.	✔	2	2	2	✘
1W5P-K-5	K	K⁺	D1R1	ARG.ASP.	ARG.ASP.	✔	2	2	2	✘