| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 7KE3-FE-10 | FE | Fe³⁺ | D3E2 | ASP.GLU. | ASP.GLU. | ✔ | 5 | 5 | 3 | ✘ |
| 7KE3-FE-11 | FE | Fe³⁺ | D3E2 | ASP.GLU. | ASP.GLU. | ✔ | 5 | 5 | 3 | ✘ |