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
4TOC-FE-13	FE	Fe²⁺	D1E1	ASP.GLU.	HIS.	✔	2	2	2	✔
4TOC-FE-14	FE	Fe²⁺	D1E1	ASP.GLU.	ASP.GLU.HOH.	✔	2	5	2	✘
4TOC-FE-17	FE	Fe²⁺	H2	HIS.	MET.	✔	2	2	2	✘
4TOC-FE-18	FE	Fe²⁺	D1E1	ASP.GLU.	MET.	✔	2	2	2	✘
4TOC-FE-20	FE	Fe²⁺	H2	HIS.	ASP.HOH.SO4.	✔	2	4	2	✘
4TOC-FE-21	FE	Fe²⁺	D1E1	ASP.GLU.	ASP.GLU.HOH.	✔	2	5	2	✘
4TOC-FE-24	FE	Fe²⁺	H2	HIS.	ASP.HOH.SO4.	✔	2	4	2	✔
4TOC-FE-25	FE	Fe²⁺	D1E1	ASP.GLU.	ASP.GLU.HOH.	✔	2	4	2	✘
4TOC-FE-26	FE	Fe²⁺	D1E1	ASP.GLU.	MET.	✔	2	2	2	✘
4TOC-FE-28	FE	Fe²⁺	H2	HIS.	HIS.	✔	2	2	2	✘
4TOC-FE-30	FE	Fe²⁺	D1E1	ASP.GLU.	ASP.GLU.HOH.	✔	2	3	2	✘
4TOC-FE-31	FE	Fe²⁺	D1E1	ASP.GLU.	ASP.HOH.	✔	2	4	2	✘
4TOC-FE-33	FE	Fe²⁺	D1E1	ASP.GLU.	HIS.	✔	2	2	2	✘
4TOE-K-1	K	K⁺	Q4	GLN.	GLN.	✔	4	4	4	✘
4TOE-K-2	K	K⁺	N2Q4	ASN.GLN.	ASN.GLN.HOH.	✔	6	7	4	✘
4TOE-K-3	K	K⁺	Q4	GLN.	GLN.	✔	4	4	4	✘
4TOE-K-4	K	K⁺	N1Q4	ASN.GLN.	ASN.GLN.	✔	5	5	4	✘
4TOE-K-5	K	K⁺	N1Q3	ASN.GLN.	ASN.GLN.	✔	4	4	3	✘
4TOE-K-6	K	K⁺	Q4	GLN.	GLN.	✔	4	4	4	✘
1O9I-CA-1	CA	Ca²⁺	D2G1N1S1	ASN.ASP.GLY.SER.	ASN.ASP.GLY.HOH.SER.	✔	5	6	2	✔