| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 5D8P-K-6 | K | K⁺ | N4Q4 | ASN.GLN. | ASN.GLN. | ✔ | 8 | 8 | 4 | ✘ |
| 6A4X-FE-1 | FE | Fe²⁺ | H2 | HIS. | HIS. | ✔ | 2 | 2 | 2 | ✔ |
| 6A4X-FE-2 | FE | Fe²⁺ | H2 | HIS. | HIS. | ✔ | 2 | 2 | 2 | ✘ |
| 5WW8-MG-1 | MG | Mg²⁺ | D3N3 | ASN.ASP. | ASN.ASP. | ✔ | 6 | 6 | 3 | ✘ |
| 5WW8-MG-2 | MG | Mg²⁺ | D3N3 | ASN.ASP. | ASN.ASP. | ✔ | 6 | 6 | 3 | ✘ |
| 5WW8-MG-3 | MG | Mg²⁺ | D3N3 | ASN.ASP. | ASN.ASP. | ✔ | 6 | 6 | 3 | ✘ |
| 5WW8-MG-4 | MG | Mg²⁺ | D3N3 | ASN.ASP. | ASN.ASP. | ✔ | 6 | 6 | 3 | ✘ |
| 5HT7-FE-1 | FE | Fe²⁺ | H6 | HIS. | HIS. | ✔ | 6 | 6 | 3 | ✔ |
| 6ON3-FE-1 | FE | Fe²⁺ | H2 | HIS. | HIS. | ✔ | 2 | 2 | 2 | ✔ |
| 6LPD-FE-1 | FE | Fe²⁺ | E3 | GLU. | GLU. | ✔ | 3 | 3 | 3 | ✘ |
| 6LPD-FE-2 | FE | Fe²⁺ | E3 | GLU. | GLU. | ✔ | 3 | 3 | 3 | ✘ |
| 6LPD-FE-3 | FE | Fe²⁺ | E3 | GLU. | GLU. | ✔ | 3 | 3 | 3 | ✘ |
| 6LPD-FE-4 | FE | Fe²⁺ | E3 | GLU. | GLU. | ✔ | 3 | 3 | 3 | ✘ |
| 6LPD-FE-5 | FE | Fe³⁺ | D1E3 | ASP.GLU. | ASP.GLU. | ✔ | 4 | 4 | 3 | ✘ |
| 6LPD-FE-6 | FE | Fe³⁺ | D1E3 | ASP.GLU. | ASP.GLU. | ✔ | 4 | 4 | 3 | ✘ |
| 6LPD-FE-7 | FE | Fe³⁺ | D1E3 | ASP.GLU. | ASP.GLU. | ✔ | 4 | 4 | 3 | ✘ |
| 6LPD-FE-8 | FE | Fe³⁺ | D1E3 | ASP.GLU. | ASP.GLU. | ✔ | 4 | 4 | 3 | ✘ |
| 6WZ0-FE-1 | FE | Fe²⁺ | H6 | HIS. | HIS. | ✔ | 6 | 6 | 3 | ✔ |
| 4TOH-K-1 | K | K⁺ | N4Q4 | ASN.GLN. | ASN.GLN. | ✔ | 8 | 8 | 4 | ✘ |
| 4TOH-K-2 | K | K⁺ | N4Q4 | ASN.GLN. | ASN.GLN. | ✔ | 8 | 8 | 4 | ✘ |