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
3PML-MG-1	MG	Mg²⁺	C1D3	ASP.DC.	1GC.ASP.DC.HOH.	✘	4	6	2	✘
3PNL-MG-2	MG	Mg²⁺	D2F1	ASP.PHE.	ADP.ASP.HOH.PHE.	✘	3	5	2	✘
3PUG-K-1	K	K⁺	M1S2	MET.SER.	MET.SER.	✔	3	3	2	✘
3PUG-K-2	K	K⁺	M1S2	MET.SER.	MET.SER.	✔	3	3	2	✘
3PUG-K-3	K	K⁺	M1S2	MET.SER.	MET.SER.	✔	3	3	2	✘
3PUG-K-4	K	K⁺	M1S2	MET.SER.	MET.SER.	✔	3	3	2	✘
3PUG-K-5	K	K⁺	M1S2	MET.SER.	MET.SER.	✔	3	3	2	✘
3PUG-K-6	K	K⁺	M1S2	MET.SER.	MET.SER.	✔	3	3	2	✘
3Q8R-MG-1	MG	Mg²⁺	C1I2K1	DC.ILE.LYS.	DC.HOH.ILE.LYS.	✘	4	6	2	✘
3Q8S-MG-1	MG	Mg²⁺	C1I2K1	DC.ILE.LYS.	DC.HOH.ILE.LYS.	✘	4	6	2	✘
3R1I-MG-2	MG	Mg²⁺	P2	PRO.	HOH.PRO.	✔	2	6	2	✘
3ESJ-MG-1	MG	Mg²⁺	E3	GLU.	GLU.	✔	3	3	3	✘
3F73-MG-1	MG	Mg²⁺	A1T1V1	DA.DT.VAL.	DA.DT.VAL.	✘	3	3	2	✘
3EUE-MG-2	MG	Mg²⁺	D1S1	ASP.SER.	ASP.SER.	✔	2	2	2	✘
3FD5-MG-2	MG	Mg²⁺	D1Q1	ASP.GLN.	AP2.ASP.GLN.HOH.PO4.	✔	2	5	2	✘
3FHA-CA-2	CA	Ca²⁺	A1E2	ALA.GLU.	ALA.GLU.HOH.	✔	3	6	2	✘
3FSX-MG-1	MG	Mg²⁺	D3	ASP.	ASP.HOH.	✔	3	6	3	✘
3FSX-MG-2	MG	Mg²⁺	E3	GLU.	GLU.	✔	3	3	3	✘
3H9F-MG-2	MG	Mg²⁺	X2	TPO.	TPO.	✔	2	2	2	✘
3H9F-MG-3	MG	Mg²⁺	X2	TPO.	TPO.	✔	2	2	2	✘