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
4HOT-MG-1	MG	Mg²⁺	E1X1	ATP.GLU.	ATP.GLU.HOH.	✘	2	5	2	✔
4HOR-MG-1	MG	Mg²⁺	E1X1	CTP.GLU.	CTP.GLU.HOH.	✘	2	5	2	✔
4S2Y-MG-5	MG	Mg²⁺	E1X1	APC.GLU.	APC.GLU.HOH.	✘	2	6	2	✘
4S2Y-MG-6	MG	Mg²⁺	E1X1	APC.GLU.	APC.GLU.HOH.	✘	2	6	2	✘
5INK-MG-1	MG	Mg²⁺	E1X1	3DR.GLU.	3DR.GLU.HOH.	✘	2	6	2	✔
5INK-MG-2	MG	Mg²⁺	E1X1	3DR.GLU.	3DR.GLU.HOH.	✘	2	6	2	✘
5DFH-MG-1	MG	Mg²⁺	E1X1	3DR.GLU.	3DR.GLU.HOH.	✘	2	6	2	✘
6D1V-MG-1	MG	Mg²⁺	E1X1	APC.GLU.	APC.GLU.HOH.	✘	2	6	2	✔
5HT2-MG-1	MG	Mg²⁺	E1X1	EDA.GLU.	EDA.GLU.HOH.	✘	2	6	2	✔
5HT2-MG-2	MG	Mg²⁺	E1X1	EDA.GLU.	EDA.GLU.HOH.	✘	2	6	2	✘