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
4RCK-MG-2	MG	Mg²⁺	D1S2	ASP.SER.	ASP.SER.	✔	3	3	2	✔
4RF3-MG-1	MG	Mg²⁺	Q2	GLN.	GLN.HOH.	✔	2	6	2	✘
4RF3-MG-2	MG	Mg²⁺	Q2	GLN.	GLN.HOH.	✔	2	6	2	✘
4RF4-MG-1	MG	Mg²⁺	Q2	GLN.	GLN.HOH.	✔	2	5	2	✘
4RF4-MG-2	MG	Mg²⁺	Q2	GLN.	GLN.HOH.	✔	2	6	2	✘
4RF5-MG-1	MG	Mg²⁺	Q2	GLN.	GLN.HOH.	✔	2	6	2	✘
4RF5-MG-2	MG	Mg²⁺	Q2	GLN.	GLN.HOH.	✔	2	6	2	✘
4TQR-MG-1	MG	Mg²⁺	C1D1E1	ASP.DC.GLU.	ASP.HOH.PHE.TTP.	✘	3	5	2	✔
4TSK-MG-1	MG	Mg²⁺	D1E1	ASP.GLU.	ASP.GLU.HOH.TLA.	✔	2	4	2	✔
4TSK-MG-2	MG	Mg²⁺	D1E1	ASP.GLU.	ASP.GLU.HOH.TLA.	✔	2	4	2	✘
4TSK-MG-3	MG	Mg²⁺	D1E1	ASP.GLU.	ASP.GLU.HOH.TLA.	✔	2	4	2	✘
4TSK-MG-4	MG	Mg²⁺	D1E1	ASP.GLU.	ASP.GLU.HOH.TLA.	✔	2	4	2	✘
4U5P-MG-1	MG	Mg²⁺	D3	ASP.	ASP.HOH.	✔	3	6	3	✔
4U6P-MG-1	MG	Mg²⁺	A1I1R1V1	ARG.DA.ILE.VAL.	ARG.DA.HOH.ILE.VAL.	✘	4	6	2	✔
4TUQ-MG-1	MG	Mg²⁺	C1D3	ASP.DC.	0KX.ASP.DC.HOH.	✘	4	6	2	✘
4TUR-MG-1	MG	Mg²⁺	C1D2	ASP.DC.	0KX.ASP.DC.	✘	3	4	2	✔
4TWK-K-1	K	K⁺	T4	THR.	THR.	✔	4	4	2	✔
4TWK-K-2	K	K⁺	I4T2	ILE.THR.	ILE.THR.	✔	6	6	2	✔
4UAY-MG-1	MG	Mg²⁺	D2X1	8OG.ASP.	8OG.HOH.PPV.	✘	3	6	2	✘
4UAZ-MG-1	MG	Mg²⁺	C1D3	ASP.DC.	8DG.ASP.DC.HOH.	✘	4	6	2	✔