| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 7VD8-ZN-5 | ZN | Zn²⁺ | H4 | HIS. | HIS. | ✔ | 4 | 4 | 4 | ✘ |
| 7VD8-ZN-6 | ZN | Zn²⁺ | H4 | HIS. | ASP.HOH. | ✔ | 4 | 2 | 4 | ✘ |
| 7RRP-ZN-2 | ZN | Zn²⁺ | H4 | HIS. | HIS. | ✔ | 4 | 4 | 4 | ✘ |
| 7RRP-ZN-4 | ZN | Zn²⁺ | H4 | HIS. | HIS. | ✔ | 4 | 4 | 4 | ✘ |
| 7RRP-ZN-5 | ZN | Zn²⁺ | H4 | HIS. | HIS. | ✔ | 4 | 4 | 4 | ✘ |
| 7RRP-ZN-7 | ZN | Zn²⁺ | H4 | HIS. | HIS. | ✔ | 4 | 4 | 4 | ✘ |
| 7RRP-ZN-10 | ZN | Zn²⁺ | H4 | HIS. | HIS. | ✔ | 4 | 4 | 4 | ✘ |
| 7RRP-ZN-12 | ZN | Zn²⁺ | H4 | HIS. | HIS. | ✔ | 4 | 4 | 4 | ✘ |
| 7LV4-CU-1 | CU | Cu²⁺ | H4 | HIS. | HIS. | ✔ | 4 | 4 | 2 | ✘ |
| 7KE3-FE-3 | FE | Fe³⁺ | H4 | HIS. | HIS. | ✔ | 4 | 4 | 4 | ✘ |
| 7KE3-FE-6 | FE | Fe³⁺ | H4 | HIS. | HIS. | ✔ | 4 | 4 | 4 | ✘ |
| 7KE3-FE-9 | FE | Fe³⁺ | H4 | HIS. | HIS. | ✔ | 4 | 4 | 4 | ✘ |
| 7KE3-FE-12 | FE | Fe³⁺ | H4 | HIS. | HIS. | ✔ | 4 | 4 | 4 | ✘ |
| 8EN7-FE-1 | FE | Fe³⁺ | H4 | HIS. | HIS. | ✔ | 4 | 4 | 4 | ✘ |
| 8EN7-FE-2 | FE | Fe³⁺ | H4 | HIS. | HIS. | ✔ | 4 | 4 | 4 | ✘ |
| 8EN7-FE-3 | FE | Fe³⁺ | H4 | HIS. | HIS. | ✔ | 4 | 4 | 4 | ✘ |
| 8EN7-FE-4 | FE | Fe³⁺ | H4 | HIS. | HIS. | ✔ | 4 | 4 | 4 | ✘ |
| 8EN7-FE-5 | FE | Fe³⁺ | H4 | HIS. | HIS. | ✔ | 4 | 4 | 4 | ✘ |
| 8EN7-FE-6 | FE | Fe³⁺ | H4 | HIS. | HIS. | ✔ | 4 | 4 | 4 | ✘ |
| 7NCY-NI-1 | NI | Ni²⁺ | H4 | HIS. | HIS. | ✔ | 4 | 4 | 2 | ✔ |