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
2XMA-MG-3	MG	Mg²⁺	C1P1	DC.PRO.	DC.HOH.PRO.	✘	2	6	2	✘
2XMA-MG-4	MG	Mg²⁺	C1P1	DC.PRO.	DC.HOH.PRO.	✘	2	6	2	✘
2XM3-MG-1	MG	Mg²⁺	C1P1	DC.PRO.	DC.HOH.PRO.	✘	2	6	2	✔
2XM3-MG-2	MG	Mg²⁺	C1P1	DC.PRO.	DC.HOH.PRO.	✘	2	6	2	✘
3T80-MG-1	MG	Mg²⁺	D1T1	ASP.THR.	ASP.HOH.THR.	✔	2	4	2	✔
3T80-MG-2	MG	Mg²⁺	E3	GLU.	GLU.	✔	3	3	3	✘
3T80-MG-3	MG	Mg²⁺	D1T1	ASP.THR.	ASP.HOH.THR.	✔	2	3	2	✔
3T80-MG-4	MG	Mg²⁺	D1T1	ASP.THR.	ASP.THR.	✔	2	2	2	✘
3SZ5-MG-1	MG	Mg²⁺	D1E1I1T1	ASP.DT.GLU.ILE.	ASP.DT.GLU.ILE.	✘	4	4	2	✔
3SZ5-MG-2	MG	Mg²⁺	D1E1I1T1	ASP.DT.GLU.ILE.	ASP.DT.GLU.ILE.	✘	4	4	2	✔
3SZ5-MG-3	MG	Mg²⁺	D1E1I1T1	ASP.DT.GLU.ILE.	ASP.DT.GLU.ILE.	✘	4	4	2	✔
3TCX-MG-1	MG	Mg²⁺	E1S2T1	GLU.SER.THR.	GLU.SER.THR.	✘	4	4	2	✔
3TFR-MG-1	MG	Mg²⁺	C1D3	ASP.DC.	ASP.DC.F3A.	✘	4	5	2	✘
3TFS-MG-1	MG	Mg²⁺	C1D3	ASP.DC.	ASP.DC.FHA.HOH.	✘	4	6	2	✘
3TNQ-MG-1	MG	Mg²⁺	D1X1	ASP.SEP.	ADP.ASP.SEP.	✘	2	3	2	✔
3U6F-MG-1	MG	Mg²⁺	C1D1G1	ASP.DC.DG.	ASP.DC.DG.HOH.	✘	3	6	2	✔
3U6F-MG-2	MG	Mg²⁺	C1D1G1	ASP.DC.DG.	ASP.DC.DG.HOH.	✘	3	6	2	✘
3L4P-CA-1	CA	Ca²⁺	D2	ASP.	ASP.	✔	2	2	2	✔
3KSA-MG-1	MG	Mg²⁺	D1E1T1	ASP.DT.GLU.	ASP.DT.GLU.	✘	3	3	2	✔
3KSB-MG-1	MG	Mg²⁺	D1E1G1	ASP.DG.GLU.	ASP.DG.GLU.	✘	3	3	2	✔