| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 4QQZ-FE-2 | FE | Fe³⁺ | A1D2 | ASP.DA. | ASP.DA. | ✘ | 3 | 3 | 2 | ✔ |
| 4QQZ-FE-3 | FE | Fe³⁺ | A1D1 | ASP.DA. | ASP.DA. | ✘ | 2 | 2 | 2 | ✔ |
| 4QQZ-FE-4 | FE | Fe³⁺ | A1D2 | ASP.DA. | ASP.DA. | ✘ | 3 | 3 | 2 | ✔ |
| 5LG2-CD-1 | CD | Cd²⁺ | E3 | GLU. | GLU. | ✔ | 3 | 3 | 3 | ✘ |
| 5LG2-CD-2 | CD | Cd²⁺ | E3 | GLU. | GLU. | ✔ | 3 | 3 | 3 | ✘ |
| 5LG2-CD-3 | CD | Cd²⁺ | E3 | GLU. | GLU. | ✔ | 3 | 3 | 3 | ✘ |
| 5LG2-CD-4 | CD | Cd²⁺ | E3 | GLU. | GLU. | ✔ | 3 | 3 | 3 | ✘ |
| 5LG2-CD-5 | CD | Cd²⁺ | E3 | GLU. | GLU. | ✔ | 3 | 3 | 3 | ✘ |
| 5LG2-CD-6 | CD | Cd²⁺ | E3 | GLU. | GLU. | ✔ | 3 | 3 | 3 | ✘ |
| 5LG2-CD-7 | CD | Cd²⁺ | E3 | GLU. | GLU. | ✔ | 3 | 3 | 3 | ✘ |
| 5LG2-CD-8 | CD | Cd²⁺ | E3 | GLU. | GLU. | ✔ | 3 | 3 | 3 | ✘ |
| 5EFV-FE-1 | FE | Fe³⁺ | H6 | HIS. | HIS. | ✔ | 6 | 6 | 3 | ✔ |
| 5EIL-FE-1 | FE | Fe³⁺ | X3 | BP5. | BP5. | ✔ | 3 | 3 | 3 | ✔ |
| 5UDV-FE-1 | FE | Fe³⁺ | D3 | ASP. | ASP.HOH. | ✔ | 3 | 4 | 3 | ✘ |
| 5UDV-FE-2 | FE | Fe³⁺ | D3 | ASP. | ASP.HOH. | ✔ | 3 | 4 | 3 | ✔ |
| 6N63-FE-1 | FE | Fe³⁺ | E2 | GLU. | ACT.GLU. | ✔ | 2 | 3 | 2 | ✔ |
| 6N63-FE-2 | FE | Fe³⁺ | E2 | GLU. | ACT.GLU. | ✔ | 2 | 4 | 2 | ✘ |
| 6V8I-FE-1 | FE | Fe³⁺ | H6 | HIS. | HIS. | ✔ | 6 | 6 | 3 | ✘ |
| 6V8I-FE-2 | FE | Fe³⁺ | H6 | HIS. | HIS. | ✔ | 6 | 6 | 3 | ✘ |
| 6V8I-FE-3 | FE | Fe³⁺ | H6 | HIS. | HIS. | ✔ | 6 | 6 | 3 | ✘ |