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
3SDK-MG-1	MG	Mg²⁺	D2I1S1	ASP.ILE.SER.	ASP.ILE.SER.	✘	4	4	2	✘
3SDK-MG-2	MG	Mg²⁺	A1D2S1	ALA.ASP.SER.	ALA.ASP.SER.	✘	4	4	2	✘
3SDK-MG-3	MG	Mg²⁺	E1S2	GLU.SER.	GLU.SER.	✘	3	3	2	✔
3SI8-MG-1	MG	Mg²⁺	A1D2E1	ASP.DA.GLU.	ASP.DA.DZ4.GLU.HOH.	✘	4	6	2	✘
4IWH-MG-1	MG	Mg²⁺	D3	ASP.	ASP.HOH.	✔	3	6	2	✘
4IWH-MG-2	MG	Mg²⁺	D3	ASP.	ASP.HOH.	✔	3	7	2	✘
4J9O-MG-1	MG	Mg²⁺	D2E1G1	ASP.DG.GLU.	ASP.DG.DZ4.GLU.	✘	4	5	2	✔
4J9Q-MG-1	MG	Mg²⁺	D2E1G1	ASP.DG.GLU.	ASP.DG.GLU.	✘	4	4	2	✔
4NI5-MG-1	MG	Mg²⁺	Q2	GLN.	GLN.HOH.	✔	2	6	2	✔
4NI5-MG-2	MG	Mg²⁺	Q2	GLN.	GLN.HOH.	✔	2	6	2	✘
4NLK-MG-1	MG	Mg²⁺	A1D3	ASP.DA.	0KX.ASP.DA.	✘	4	5	2	✘
4NM1-MG-1	MG	Mg²⁺	C1D2	ASP.DC.	ASP.DC.HOH.PO4.	✘	3	5	2	✘
4NNN-MG-1	MG	Mg²⁺	A1D2	ALA.ASP.	ALA.ASP.HOH.	✘	3	4	2	✘
4NNN-MG-2	MG	Mg²⁺	D2I1S1	ASP.ILE.SER.	ASP.HOH.ILE.SER.	✘	4	5	2	✘
4NNN-MG-3	MG	Mg²⁺	A1D2S1	ALA.ASP.SER.	ALA.ASP.HOH.SER.	✘	4	5	2	✘
4NO1-MG-1	MG	Mg²⁺	A1D2S1	ALA.ASP.SER.	GLN.HOH.	✘	4	3	2	✘
4NO1-MG-2	MG	Mg²⁺	D2I1S1	ASP.ILE.SER.	ALA.ASP.HOH.SER.	✘	4	5	2	✘
4NO1-MG-3	MG	Mg²⁺	A1D2S1	ALA.ASP.SER.	ASP.ILE.SER.	✘	4	4	2	✘
4NO6-MG-1	MG	Mg²⁺	A1D2H1	ALA.ASP.HIS.	ALA.ASP.HIS.	✘	4	4	2	✘
4NO6-MG-2	MG	Mg²⁺	D2I1S1	ASP.ILE.SER.	ASP.ILE.SER.	✘	4	4	2	✘