| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 7WB2-FE-5 | FE | Fe³⁺ | D2E2 | ASP.GLU. | ASP.GLU. | ✔ | 4 | 4 | 2 | ✘ |
| 7W5E-FE-1 | FE | Fe³⁺ | D2E2 | ASP.GLU. | GLU.HOH. | ✔ | 4 | 3 | 2 | ✔ |
| 7V4F-FE-1 | FE | Fe³⁺ | D2E2 | ASP.GLU. | ASP.GLU. | ✔ | 4 | 4 | 2 | ✔ |
| 7KE3-FE-4 | FE | Fe³⁺ | D2E2 | ASP.GLU. | ASP.GLU. | ✔ | 4 | 4 | 3 | ✘ |
| 7KE3-FE-5 | FE | Fe³⁺ | D2E2 | ASP.GLU. | ASP.GLU. | ✔ | 4 | 4 | 3 | ✘ |