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
3HJW-K-1	K	K⁺	T1X1	FHU.THR.	FHU.HOH.THR.	✘	2	4	2	✔
4AYP-CA-1	CA	Ca²⁺	T1X1	MAN.THR.	HOH.MAN.THR.	✘	2	6	2	✔
1JG3-NA-1	NA	Na⁺	T1X1	IAS.THR.	HOH.IAS.THR.	✘	2	4	2	✔
6OZI-K-1	K	K⁺	T1X1	DI.DT.	DI.DT.HOH.	✔	2	4	2	✔
1X9D-CA-1	CA	Ca²⁺	T1X1	MAN.THR.	HOH.MAN.THR.	✘	2	6	2	✔
5KIJ-LA-1	LA	La³⁺	T1X1	MAN.THR.	HOH.MAN.THR.	✘	2	7	2	✔
5KKB-LA-1	LA	La³⁺	T1X1	MAN.THR.	HOH.MAN.THR.	✘	2	7	2	✔
7SDL-AG-3	AG	Ag⁺	T1X1	DT.IMC.	DT.IMC.	✘	2	2	2	✘
7SE0-HG-1	HG	Hg²⁺	T1X1	5IU.DT.	5IU.DT.	✘	2	2	2	✔
7SDI-HG-1	HG	Hg²⁺	T1X1	DT.DU.	DT.DU.	✘	2	2	2	✔
7SDI-HG-2	HG	Hg²⁺	T1X1	DT.DU.	DT.DU.	✘	2	2	2	✘
7SDI-HG-3	HG	Hg²⁺	T1X1	DT.DU.	DT.DU.	✘	2	2	2	✘