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
6XNB-MG-1	MG	Mg²⁺	Q2	GLN.	GLN.HOH.	✔	2	7	2	✔
6XNB-MG-2	MG	Mg²⁺	Q2	GLN.	GLN.HOH.	✔	2	7	2	✔
6XNY-MG-1	MG	Mg²⁺	C1D1E1	ASP.DC.GLU.	ASP.DC.GLU.	✘	3	3	2	✔
6XNY-MG-2	MG	Mg²⁺	C1D1E1	ASP.DC.GLU.	ASP.DC.GLU.	✘	3	3	2	✔
6XNX-MG-1	MG	Mg²⁺	C1D1E1	ASP.DC.GLU.	ASP.DC.GLU.	✘	3	3	2	✔
6XNX-MG-2	MG	Mg²⁺	C1D1E1	ASP.DC.GLU.	ASP.DC.GLU.	✘	3	3	2	✔
6Y1C-MG-1	MG	Mg²⁺	Q2	GLN.	GLN.HOH.	✔	2	6	2	✘
6Y1C-MG-2	MG	Mg²⁺	Q2	GLN.	GLN.HOH.	✔	2	6	2	✘
6Y15-MG-1	MG	Mg²⁺	Q2	GLN.	GLN.HOH.	✔	2	6	2	✘
6Y15-MG-2	MG	Mg²⁺	Q2	GLN.	GLN.HOH.	✔	2	6	2	✘
6X70-MG-1	MG	Mg²⁺	A1D1V1	ASP.DA.VAL.	ASP.DA.HOH.VAL.	✘	3	5	2	✘
6WUQ-MG-1	MG	Mg²⁺	G1L1P1R1T1	ARG.GLY.LEU.PRO.THR.	ARG.GLY.LEU.PRO.THR.	✔	5	5	2	✔
6WUQ-MG-2	MG	Mg²⁺	E1G1L1P1T1	GLU.GLY.LEU.PRO.THR.	GLU.GLY.LEU.PRO.THR.	✔	5	5	2	✔
6X71-MG-1	MG	Mg²⁺	C1D2F1	ASP.DC.PHE.	ASP.DC.DCP.PHE.POP.	✘	4	6	2	✔
6X71-MG-2	MG	Mg²⁺	A1D1L1	ASP.DA.LEU.	HOH.POP.	✘	3	3	2	✘
6X74-MG-1	MG	Mg²⁺	A1D1L1V1	ASP.DA.LEU.VAL.	ASP.DA.HOH.LEU.VAL.	✘	4	5	2	✔
4ZP1-NI-1	NI	Ni²⁺	H2	HIS.	HIS.	✔	2	2	2	✔
4ZP1-NI-2	NI	Ni²⁺	H3	HIS.	HIS.	✔	3	3	2	✔
5K6R-K-1	K	K⁺	M2Q2	GLN.MET.	GLN.MET.	✔	4	4	2	✔
5K6T-K-1	K	K⁺	M2Q2	GLN.MET.	GLN.MET.	✔	4	4	2	✔