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
1TZN-MG-11	MG	Mg²⁺	D1S1T1	ASP.SER.THR.	ASP.SER.THR.	✘	3	3	2	✘
1TZN-MG-12	MG	Mg²⁺	D1S1T1	ASP.SER.THR.	ASP.SER.THR.	✘	3	3	2	✘
1TZN-MG-13	MG	Mg²⁺	D1S1T1	ASP.SER.THR.	ASP.SER.THR.	✘	3	3	2	✘
1TZN-MG-14	MG	Mg²⁺	D1S1T1	ASP.SER.THR.	ASP.SER.THR.	✘	3	3	2	✘
2A5L-MG-2	MG	Mg²⁺	K2S2	LYS.SER.	HOH.LYS.SER.	✔	4	6	2	✘
2AE8-MG-2	MG	Mg²⁺	E2	GLU.	GLU.HOH.	✔	2	4	2	✘
2AE8-MG-3	MG	Mg²⁺	E2	GLU.	GLU.HOH.	✔	2	4	2	✘
2AE8-MG-4	MG	Mg²⁺	E2	GLU.	GLU.HOH.	✔	2	4	2	✘
2AGQ-MG-1	MG	Mg²⁺	D1E1X1	ASP.DOC.GLU.	ASP.DOC.GLU.HOH.	✘	3	6	2	✘
2CG4-MG-2	MG	Mg²⁺	D2	ASP.	ASP.	✔	2	2	2	✘
2CG4-MG-3	MG	Mg²⁺	D2	ASP.	ASP.	✔	2	2	2	✘
2CG4-MG-4	MG	Mg²⁺	D2	ASP.	ASP.	✔	2	2	2	✘
2D0O-MG-2	MG	Mg²⁺	D2E1T1	ASP.GLU.THR.	ASP.GLU.HOH.THR.	✘	4	5	2	✘
2DP7-K-1	K	K⁺	T2	DT.	DT.HOH.	✔	2	5	2	✘
3Q8Q-MG-1	MG	Mg²⁺	C1I2K1	DC.ILE.LYS.	DC.HOH.ILE.LYS.	✘	4	6	2	✘
3QYF-MG-2	MG	Mg²⁺	D1E1	ASP.GLU.	ASP.GLU.HOH.	✔	2	4	2	✘
3RF6-MG-1	MG	Mg²⁺	G2Q2	GLN.GLY.	GLN.GLY.HOH.	✔	4	6	2	✘
3RJF-MG-1	MG	Mg²⁺	A1D3	ASP.DA.	ASP.DA.F2A.HOH.	✘	4	6	2	✘
3RJH-MG-1	MG	Mg²⁺	A1D3	ASP.DA.	6CF.ASP.DA.HOH.	✘	4	6	2	✘
3RJI-MG-1	MG	Mg²⁺	A1D3	ASP.DA.	6CF.ASP.DA.HOH.	✘	4	6	2	✘