| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 7LSN-NI-1 | NI | Ni²⁺ | H5 | HIS. | HIS. | ✔ | 5 | 5 | 2 | ✘ |
| 7LSN-NI-2 | NI | Ni²⁺ | H5 | HIS. | HIS. | ✔ | 5 | 5 | 2 | ✘ |
| 7LRA-NI-1 | NI | Ni²⁺ | H5 | HIS. | HIS. | ✔ | 5 | 5 | 2 | ✘ |
| 7LRV-NI-1 | NI | Ni²⁺ | H5 | HIS. | HIS. | ✔ | 5 | 5 | 2 | ✘ |
| 7LRV-NI-2 | NI | Ni²⁺ | H5 | HIS. | HIS. | ✔ | 5 | 5 | 2 | ✘ |
| 7LR5-NI-1 | NI | Ni²⁺ | H5 | HIS. | HIS. | ✔ | 5 | 5 | 2 | ✘ |
| 7LR5-NI-2 | NI | Ni²⁺ | H5 | HIS. | HIS. | ✔ | 5 | 5 | 2 | ✘ |
| 3DE9-NI-1 | NI | Ni²⁺ | H6 | HIS. | HIS. | ✔ | 6 | 6 | 3 | ✘ |
| 3DE9-NI-2 | NI | Ni²⁺ | H6 | HIS. | HIS. | ✔ | 6 | 6 | 3 | ✘ |
| 2UUH-NI-1 | NI | Ni²⁺ | H6 | HIS. | HIS. | ✔ | 6 | 6 | 3 | ✔ |
| 7O9E-NI-1 | NI | Ni²⁺ | E3 | GLU. | GLU.HOH. | ✔ | 3 | 4 | 2 | ✘ |
| 7O9E-NI-2 | NI | Ni²⁺ | E3 | GLU. | GLU.HOH. | ✔ | 3 | 4 | 2 | ✘ |
| 7O9E-NI-3 | NI | Ni²⁺ | E3 | GLU. | GLU.HOH. | ✔ | 3 | 4 | 2 | ✘ |
| 7O9E-NI-4 | NI | Ni²⁺ | E3 | GLU. | GLU.HOH. | ✔ | 3 | 4 | 2 | ✘ |
| 7O9C-NI-1 | NI | Ni²⁺ | E3 | GLU. | GLU.HOH. | ✔ | 3 | 4 | 2 | ✘ |
| 7O9C-NI-2 | NI | Ni²⁺ | E3 | GLU. | GLU.HOH. | ✔ | 3 | 4 | 2 | ✘ |
| 7O9C-NI-3 | NI | Ni²⁺ | E3 | GLU. | GLU.HOH. | ✔ | 3 | 4 | 2 | ✘ |
| 7B4Y-CU-1 | CU | Cu²⁺ | H3 | HIS. | HIS. | ✔ | 3 | 3 | 2 | ✘ |
| 7B4Y-CU-2 | CU | Cu²⁺ | H3 | HIS. | HIS. | ✔ | 3 | 3 | 2 | ✘ |
| 7B4Y-CU-3 | CU | Cu²⁺ | H3 | HIS. | HIS. | ✔ | 3 | 3 | 2 | ✘ |