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
4UBB-MG-1	MG	Mg²⁺	D2X1	8OG.ASP.	8DG.8OG.ASP.HOH.PPV.	✘	3	6	2	✔
4RNM-MG-1	MG	Mg²⁺	D2E1T1	ASP.DT.GLU.	ASP.DT.DZ4.GLU.HOH.	✘	4	6	2	✔
4RNN-MG-1	MG	Mg²⁺	D2E1T1	ASP.DT.GLU.	ASP.DT.GLU.HOH.XG4.	✘	4	6	2	✔
4RQ0-MG-1	MG	Mg²⁺	C1D2	ASP.DC.	ASP.DC.HOH.PPV.	✘	3	5	2	✘
4RPZ-MG-1	MG	Mg²⁺	C1D2	ASP.DC.	ASP.DC.DCP.HOH.	✘	3	5	2	✔
4RQ4-MG-1	MG	Mg²⁺	A1D2	ASP.DA.	ASP.DA.DTP.HOH.	✘	3	5	2	✔
4RQ6-MG-1	MG	Mg²⁺	A1D2	ASP.DA.	ASP.DA.HOH.PPV.	✘	3	5	2	✘
4S2X-MG-1	MG	Mg²⁺	E4X1	APC.GLU.	APC.GLU.HOH.SO4.	✘	5	7	2	✔
4S2X-MG-2	MG	Mg²⁺	E2Q1X1	APC.GLN.GLU.	APC.GLN.GLU.HOH.	✘	4	5	2	✘
4S2Y-MG-1	MG	Mg²⁺	E3X1	APC.GLU.	APC.GLU.HOH.	✘	4	6	2	✘
4S2Y-MG-2	MG	Mg²⁺	E3X1	APC.GLU.	APC.GLU.HOH.	✘	4	6	2	✘
4S2Y-MG-3	MG	Mg²⁺	E2Q1X1	APC.GLN.GLU.	APC.GLN.GLU.HOH.	✘	4	5	2	✘
4S2Y-MG-4	MG	Mg²⁺	E2Q1X1	APC.GLN.GLU.	APC.GLN.GLU.HOH.	✘	4	5	2	✘
4S2Y-MG-5	MG	Mg²⁺	E1X1	APC.GLU.	APC.GLU.HOH.	✘	2	6	2	✘
4S2Y-MG-6	MG	Mg²⁺	E1X1	APC.GLU.	APC.GLU.HOH.	✘	2	6	2	✘
4RUR-MG-1	MG	Mg²⁺	A1D2S1	ALA.ASP.SER.	ALA.ASP.SER.	✘	4	4	2	✘
4RUR-MG-2	MG	Mg²⁺	D1Q1	ASP.GLN.	ASP.GLN.HOH.	✘	2	3	2	✔
4RUR-MG-3	MG	Mg²⁺	D2I1S1	ASP.ILE.SER.	ASP.HOH.ILE.SER.	✘	4	5	2	✘
4RUR-MG-4	MG	Mg²⁺	A1D2S1	ALA.ASP.SER.	ALA.ASP.HOH.SER.	✘	4	5	2	✘
4RUS-MG-1	MG	Mg²⁺	D2	ASP.	ASP.HOH.	✔	2	4	2	✔