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
1ZVC-MG-1	MG	Mg²⁺	T3	THR.	HOH.THR.	✔	3	6	3	✔
2AMC-MG-1	MG	Mg²⁺	E2	GLU.	GLU.	✘	2	2	2	✘
2AMC-MG-2	MG	Mg²⁺	E2	GLU.	GLU.	✘	2	2	2	✘
2B0C-MG-1	MG	Mg²⁺	D1E1T1	ASP.GLU.THR.	ASP.GLU.HOH.THR.	✔	3	7	2	✔
2B0C-MG-2	MG	Mg²⁺	D1E1T1	ASP.GLU.THR.	ASP.GLU.HOH.THR.	✔	3	7	2	✘
1KDH-MG-1	MG	Mg²⁺	D1X1	ASP.BRU.	ASP.BRU.	✘	2	2	2	✔
1KFS-MG-1	MG	Mg²⁺	C1D1G1	ASP.DC.DG.	ASP.DC.DG.HOH.	✘	3	6	2	✔
1KXG-MG-1	MG	Mg²⁺	Q3	GLN.	HOH.	✔	3	6	3	✔
2FKZ-MG-1	MG	Mg²⁺	E2	GLU.	GLU.HOH.	✔	2	4	2	✔
2FKZ-MG-2	MG	Mg²⁺	E2	GLU.	GLU.HOH.	✔	2	4	2	✘
2FKZ-MG-3	MG	Mg²⁺	E2	GLU.	GLU.HOH.	✔	2	4	2	✘
2FKZ-MG-4	MG	Mg²⁺	E2	GLU.	HOH.	✔	2	6	2	✘
2FKZ-MG-5	MG	Mg²⁺	E2	GLU.	HOH.	✔	2	6	2	✘
2FKZ-MG-6	MG	Mg²⁺	E2	GLU.	HOH.	✔	2	6	2	✘
2FMS-MG-1	MG	Mg²⁺	C1D3	ASP.DC.	ASP.DC.DUP.HOH.	✘	4	6	2	✘
2FN3-MG-1	MG	Mg²⁺	L2N2R2	ARG.ASN.LEU.	ARG.ASN.LEU.	✔	6	6	2	✔
2FN3-MG-2	MG	Mg²⁺	L2N2R2	ARG.ASN.LEU.	ARG.ASN.LEU.	✔	6	6	2	✘
2FWN-MG-1	MG	Mg²⁺	L2N2R2	ARG.ASN.LEU.	ARG.ASN.LEU.	✔	6	6	2	✘
2FWN-MG-2	MG	Mg²⁺	L2N2R2	ARG.ASN.LEU.	ARG.ASN.LEU.	✔	6	6	2	✘
2GHQ-MG-1	MG	Mg²⁺	D1N2X1	ASN.ASP.SEP.	ASN.ASP.SEP.	✘	4	4	2	✔