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
4QLV-MG-1	MG	Mg²⁺	A1D2S1	ALA.ASP.SER.	ALA.ASP.SER.	✘	4	4	2	✘
4QLV-MG-2	MG	Mg²⁺	D2I1W1	ASP.ILE.TRP.	ASP.ILE.TRP.	✘	4	4	2	✘
4QLV-MG-3	MG	Mg²⁺	A1D2S1	ALA.ASP.SER.	ALA.ASP.SER.	✘	4	4	2	✘
4R02-MG-1	MG	Mg²⁺	A1D2S1	ALA.ASP.SER.	HOH.	✘	4	2	2	✘
4R02-MG-2	MG	Mg²⁺	D2I1S1	ASP.ILE.SER.	ALA.ASP.HOH.SER.	✘	4	5	2	✘
4R02-MG-3	MG	Mg²⁺	A1D2S1	ALA.ASP.SER.	HOH.	✘	4	4	2	✘
4PHE-MG-1	MG	Mg²⁺	C1D1	ASP.DC.	ASP.DC.HOH.XG4.	✘	2	4	2	✘
4PHA-MG-1	MG	Mg²⁺	A1D2	ASP.DA.	0KX.ASP.DA.	✘	3	4	2	✘
4PH5-MG-1	MG	Mg²⁺	C1D2	ASP.DC.	ASP.DC.PO4.	✘	3	4	2	✘
4PGQ-MG-1	MG	Mg²⁺	A1D2	ASP.DA.	1FZ.ASP.DA.HOH.	✘	3	5	2	✘
4Q44-MG-1	MG	Mg²⁺	C1D1E1	ASP.DC.GLU.	1FZ.ASP.DC.GLU.	✘	3	4	2	✘
4Q45-MG-1	MG	Mg²⁺	C1D1E1	ASP.DC.GLU.	1FZ.ASP.DC.GLU.	✘	3	4	2	✔
4R17-MG-1	MG	Mg²⁺	A1D2S1	ALA.ASP.SER.	HOH.	✘	4	5	2	✔
4R17-MG-2	MG	Mg²⁺	D2I1S1	ASP.ILE.SER.	HOH.	✘	4	2	2	✔
4R17-MG-3	MG	Mg²⁺	A1D2S1	ALA.ASP.SER.	ALA.ASP.HOH.SER.	✘	4	5	2	✘
4R65-MG-1	MG	Mg²⁺	C1D3	ASP.DC.	ASP.DC.DUP.HOH.	✘	4	6	2	✘
4QV1-MG-1	MG	Mg²⁺	A1D2S1	ALA.ASP.SER.	GLN.HOH.	✘	4	2	2	✘
4QV1-MG-2	MG	Mg²⁺	D2I1S1	ASP.ILE.SER.	ALA.ASP.HOH.SER.	✘	4	5	2	✔
4QV1-MG-3	MG	Mg²⁺	A1D2S1	ALA.ASP.SER.	ASP.ILE.SER.	✘	4	4	2	✘
4QV3-MG-1	MG	Mg²⁺	D2I1S1	ASP.ILE.SER.	ASP.ILE.SER.	✘	4	4	2	✘