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
7ZUR-K-3	K	K⁺	G4	DG.	DG.	✔	4	4	2	✘
6W8F-K-1	K	K⁺	I4T4	ILE.THR.	ILE.THR.	✔	8	8	2	✔
6W8F-K-2	K	K⁺	G4I4	GLY.ILE.	GLY.ILE.	✔	8	8	2	✘
6W8F-K-3	K	K⁺	T2	THR.	THR.	✔	2	2	2	✘
6W8F-K-4	K	K⁺	F4G3	GLY.PHE.	GLY.PHE.	✔	7	7	2	✔
6W7D-K-1	K	K⁺	I3T3	ILE.THR.	ILE.THR.	✔	6	6	2	✔
6W7D-K-2	K	K⁺	T3	THR.	THR.	✔	3	3	2	✘
6W7E-K-1	K	K⁺	I3T3	ILE.THR.	ILE.THR.	✔	6	6	2	✔
6W7E-K-2	K	K⁺	T2	THR.	THR.	✔	2	2	2	✔
7Q3X-K-1	K	K⁺	E2	GLU.	ASP.HOH.	✔	2	3	2	✔
7Q3X-K-2	K	K⁺	D2	ASP.	ASP.HOH.	✔	2	2	2	✔
7Q3X-K-3	K	K⁺	D1Q1	ASP.GLN.	ASP.HOH.	✔	2	4	2	✔
7Q3X-K-4	K	K⁺	E2	GLU.	GLU.HOH.	✔	2	4	2	✘
7Q3X-K-5	K	K⁺	D2	ASP.	ASP.HOH.	✔	2	3	2	✔
7PQT-K-1	K	K⁺	G4L4	GLY.LEU.	GLY.LEU.	✔	8	8	4	✘
7PQT-K-2	K	K⁺	L4T4	LEU.THR.	LEU.THR.	✔	8	8	4	✘
7PQT-K-3	K	K⁺	T4	THR.	THR.	✔	4	4	4	✔
7PQT-K-4	K	K⁺	G4Y4	GLY.TYR.	GLY.TYR.	✔	8	8	4	✘
7Q32-K-1	K	K⁺	E2I2S2	GLU.ILE.SER.	GLU.ILE.SER.	✔	6	6	2	✘
7Q32-K-2	K	K⁺	E2I2S2	GLU.ILE.SER.	GLU.ILE.SER.	✔	6	6	2	✘