| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 4INS-ZN-1 | ZN | Zn²⁺ | H3 | HIS. | HOH. | ✔ | 3 | 3 | 3 | ✘ |
| 1SHR-FE-1 | FE | Fe³⁺ | H3 | HIS. | CYN.HIS. | ✔ | 3 | 4 | 2 | ✔ |
| 1U5Z-NI-1 | NI | Ni²⁺ | H3 | HIS. | HIS. | ✔ | 3 | 3 | 3 | ✔ |
| 4JCZ-NI-1 | NI | Ni²⁺ | H3 | HIS. | HIS. | ✔ | 3 | 3 | 3 | ✔ |
| 4J7T-NI-1 | NI | Ni²⁺ | H3 | HIS. | HIS. | ✔ | 3 | 3 | 3 | ✘ |
| 4J7T-NI-2 | NI | Ni²⁺ | H3 | HIS. | HIS. | ✔ | 3 | 3 | 3 | ✘ |
| 4J7T-NI-3 | NI | Ni²⁺ | H3 | HIS. | HIS. | ✔ | 3 | 3 | 3 | ✘ |
| 4J7T-NI-4 | NI | Ni²⁺ | H3 | HIS. | HIS. | ✔ | 3 | 3 | 3 | ✘ |
| 4J7T-NI-5 | NI | Ni²⁺ | H3 | HIS. | HIS. | ✔ | 3 | 3 | 3 | ✘ |
| 3QSI-NI-1 | NI | Ni²⁺ | H3 | HIS. | HIS. | ✔ | 3 | 3 | 2 | ✔ |
| 1XU2-NI-1 | NI | Ni²⁺ | H3 | HIS. | HIS. | ✔ | 3 | 3 | 3 | ✔ |
| 6T6J-NI-1 | NI | Ni²⁺ | H3 | HIS. | HIS. | ✔ | 3 | 3 | 3 | ✔ |
| 1EF8-NI-1 | NI | Ni²⁺ | H3 | HIS. | HIS. | ✔ | 3 | 3 | 3 | ✘ |
| 1EF8-NI-2 | NI | Ni²⁺ | H3 | HIS. | HIS. | ✔ | 3 | 3 | 3 | ✘ |
| 6N97-NI-1 | NI | Ni²⁺ | H3 | HIS. | HIS. | ✔ | 3 | 3 | 3 | ✔ |
| 6N97-NI-2 | NI | Ni²⁺ | H3 | HIS. | HIS. | ✔ | 3 | 3 | 3 | ✘ |
| 3H56-CU-1 | CU | Cu²⁺ | H3 | HIS. | HIS. | ✔ | 3 | 3 | 2 | ✘ |
| 3H56-CU-2 | CU | Cu²⁺ | H3 | HIS. | HIS. | ✔ | 3 | 3 | 2 | ✘ |
| 3H56-CU-3 | CU | Cu²⁺ | H3 | HIS. | HIS. | ✔ | 3 | 3 | 2 | ✘ |
| 4KNS-CU-1 | CU | Cu²⁺ | H3 | HIS. | HIS. | ✔ | 3 | 3 | 2 | ✔ |