| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 4ZTT-FE-1 | FE | Fe²⁺ | E4 | GLU. | GLU. | ✔ | 4 | 4 | 4 | ✔ |
| 3MPS-FE-5 | FE | Fe³⁺ | E4 | GLU. | GLU.HOH. | ✔ | 4 | 5 | 2 | ✘ |
| 3MPS-FE-7 | FE | Fe³⁺ | E4 | GLU. | GLU. | ✔ | 4 | 4 | 2 | ✘ |
| 7PPT-FE-1 | FE | Fe³⁺ | E4 | GLU. | GLU.HOH.OH. | ✔ | 4 | 6 | 2 | ✘ |
| 7PPT-FE-3 | FE | Fe³⁺ | E4 | GLU. | GLU.HOH.OH. | ✔ | 4 | 6 | 2 | ✘ |
| 7PPV-FE-1 | FE | Fe³⁺ | E4 | GLU. | GLU.HOH.OH. | ✔ | 4 | 6 | 2 | ✘ |
| 7PPV-FE-3 | FE | Fe³⁺ | E4 | GLU. | GLU.HOH.OH. | ✔ | 4 | 6 | 2 | ✘ |
| 7PPU-FE-1 | FE | Fe³⁺ | E4 | GLU. | GLU.HOH.OH. | ✔ | 4 | 6 | 2 | ✔ |
| 7PPU-FE-3 | FE | Fe³⁺ | E4 | GLU. | GLU.HOH.OH. | ✔ | 4 | 6 | 2 | ✘ |