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
4JUD-MG-1	MG	Mg²⁺	L2N2R2	ARG.ASN.LEU.	ARG.ASN.LEU.	✔	6	6	2	✘
4JUD-MG-2	MG	Mg²⁺	L2N2R2	ARG.ASN.LEU.	ARG.ASN.LEU.	✔	6	6	2	✘
4JUF-MG-1	MG	Mg²⁺	L2N2R2	ARG.ASN.LEU.	ARG.ASN.LEU.	✔	6	6	2	✘
4JUF-MG-2	MG	Mg²⁺	L2N2R2	ARG.ASN.LEU.	ARG.ASN.LEU.	✔	6	6	2	✘
4JWM-MG-1	MG	Mg²⁺	C1D2	ASP.DC.	ASP.DC.DUP.HOH.	✘	3	6	2	✘
4K9N-MG-1	MG	Mg²⁺	L2N2R2	ARG.ASN.LEU.	ARG.ASN.LEU.	✔	6	6	2	✘
4K9N-MG-2	MG	Mg²⁺	L2N2R2	ARG.ASN.LEU.	ARG.ASN.LEU.	✔	6	6	2	✘
4K9O-MG-1	MG	Mg²⁺	L2N2R2	ARG.ASN.LEU.	ARG.ASN.LEU.	✔	6	6	2	✘
4K9O-MG-2	MG	Mg²⁺	L2N2R2	ARG.ASN.LEU.	ARG.ASN.HOH.LEU.	✔	6	7	2	✘
4K9P-MG-1	MG	Mg²⁺	L2N2R2	ARG.ASN.LEU.	ARG.ASN.LEU.	✔	6	6	2	✘
4K9P-MG-2	MG	Mg²⁺	L2N2R2	ARG.ASN.LEU.	ARG.ASN.LEU.	✔	6	6	2	✘
4JZV-MG-1	MG	Mg²⁺	E1G1X1	GCP.GLU.GLY.	GCP.GLU.GLY.HOH.	✘	3	5	2	✔
4JZV-MG-2	MG	Mg²⁺	E3X1	GCP.GLU.	GCP.GLU.HOH.	✘	4	5	2	✔
4KAZ-MG-1	MG	Mg²⁺	C1D1E1	ASP.DC.GLU.	ASP.DC.GLU.HOH.	✘	3	4	2	✔
4KAZ-MG-2	MG	Mg²⁺	C2D1	ASP.DC.	ASP.DC.HOH.	✘	3	6	2	✘
4KB0-MG-1	MG	Mg²⁺	C1D2E1	ASP.DC.GLU.	ASP.DC.GLU.	✘	4	4	2	✘
4KB1-MG-1	MG	Mg²⁺	C1D1E1	ASP.DC.GLU.	ASP.DC.GLU.HOH.	✘	3	4	2	✔
4KB1-MG-2	MG	Mg²⁺	C1D1T1	ASP.DC.DT.	ASP.DC.DT.HOH.	✘	3	6	2	✘
4WK0-MG-1	MG	Mg²⁺	D1E1S1	ASP.GLU.SER.	ASP.GLU.HOH.SER.	✘	3	6	2	✔
4WK2-MG-1	MG	Mg²⁺	D1E1S2	ASP.GLU.SER.	ASP.GLU.HOH.SER.	✘	4	6	2	✔