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
3KSB-MG-2	MG	Mg²⁺	A1D1E1	ASP.DA.GLU.	ASP.DA.GLU.	✘	3	3	2	✔
3KYL-MG-1	MG	Mg²⁺	D3G1	ASP.DG.	ASP.DG.	✘	4	4	2	✔
3LD0-MG-1	MG	Mg²⁺	E2	GLU.	GLU.HOH.	✔	2	3	2	✔
3LD0-MG-2	MG	Mg²⁺	E3	GLU.	GLU.HOH.	✔	3	2	3	✘
3LD0-MG-3	MG	Mg²⁺	E3	GLU.	GLU.HOH.	✔	3	4	3	✔
3LK9-MG-1	MG	Mg²⁺	C1D3	ASP.DC.	ASP.DC.HOH.TFF.	✘	4	6	2	✘
3GAH-K-1	K	K⁺	D1I1	ASP.ILE.	ASP.ATP.ILE.	✔	2	3	2	✔
3GAH-K-2	K	K⁺	D1I1	ASP.ILE.	ASP.ATP.ILE.	✔	2	3	2	✘
3GAH-K-3	K	K⁺	D1I1	ASP.ILE.	ASP.ATP.ILE.	✔	2	3	2	✘
3GAI-K-1	K	K⁺	D1I1	ASP.ILE.	ASP.ATP.ILE.	✔	2	3	2	✘
3GAI-K-2	K	K⁺	D1I1	ASP.ILE.	ASP.ATP.ILE.	✔	2	3	2	✘
3GAI-K-3	K	K⁺	D1I1	ASP.ILE.	ASP.ATP.ILE.	✔	2	3	2	✘
3GAJ-K-1	K	K⁺	D1I1	ASP.ILE.	ASP.ATP.ILE.	✔	2	3	2	✘
3GAJ-K-2	K	K⁺	D1I1	ASP.ILE.	ASP.ATP.ILE.	✔	2	3	2	✘
3GAJ-K-3	K	K⁺	D1I1	ASP.ILE.	ASP.ATP.ILE.	✔	2	3	2	✘
3GDX-MG-1	MG	Mg²⁺	C1D3	ASP.DC.	4BD.ASP.DC.HOH.	✘	4	6	2	✘
3GHZ-MG-1	MG	Mg²⁺	E3	GLU.	ASP.HOH.	✔	3	6	3	✔
3G1B-MG-1	MG	Mg²⁺	D2	ASP.	ASP.HOH.	✔	2	5	2	✔
3G1B-MG-2	MG	Mg²⁺	E2	GLU.	GLU.	✔	2	2	2	✔
3G3P-MG-1	MG	Mg²⁺	D2	ASP.	ASP.HOH.	✔	2	5	2	✘