| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 7O9D-CO-2 | CO | Co²⁺ | E3 | GLU. | GLU.PEO. | ✔ | 3 | 4 | 2 | ✘ |
| 7O9D-CO-3 | CO | Co²⁺ | E3 | GLU. | GLU.PEO. | ✔ | 3 | 4 | 2 | ✔ |
| 7O9D-CO-4 | CO | Co²⁺ | E3 | GLU. | GLU.PEO. | ✔ | 3 | 4 | 2 | ✘ |
| 7O99-CO-1 | CO | Co²⁺ | E3 | GLU. | GLU.HOH. | ✔ | 3 | 4 | 2 | ✘ |
| 7O99-CO-2 | CO | Co²⁺ | E3 | GLU. | GLU.HOH. | ✔ | 3 | 4 | 2 | ✘ |
| 7O99-CO-3 | CO | Co²⁺ | E3 | GLU. | GLU.HOH. | ✔ | 3 | 4 | 2 | ✘ |
| 7O99-CO-4 | CO | Co²⁺ | E3 | GLU. | GLU.HOH. | ✔ | 3 | 4 | 2 | ✘ |
| 7AZ0-NI-1 | NI | Ni²⁺ | H6 | HIS. | HIS. | ✔ | 6 | 6 | 3 | ✔ |
| 7AYZ-NI-1 | NI | Ni²⁺ | H6 | HIS. | HIS. | ✔ | 6 | 6 | 3 | ✘ |
| 7O4Z-NI-1 | NI | Ni²⁺ | H3 | HIS. | HOH. | ✔ | 3 | 2 | 2 | ✘ |
| 7NCY-NI-1 | NI | Ni²⁺ | H4 | HIS. | HIS. | ✔ | 4 | 4 | 2 | ✔ |
| 7VQ6-NI-1 | NI | Ni²⁺ | E2Q1 | GLN.GLU. | GLN.GLU.HOH. | ✔ | 3 | 5 | 2 | ✔ |
| 7VQ6-NI-2 | NI | Ni²⁺ | E2Q1 | GLN.GLU. | GLN.GLU.HOH. | ✔ | 3 | 5 | 2 | ✘ |
| 7N4F-NI-1 | NI | Ni²⁺ | H5 | HIS. | HIS. | ✔ | 5 | 5 | 2 | ✘ |
| 2NZ6-NI-1 | NI | Ni²⁺ | H6 | HIS. | HIS. | ✔ | 6 | 6 | 3 | ✔ |
| 2NZ6-NI-2 | NI | Ni²⁺ | H4K1 | HIS.LYS. | HIS.LYS. | ✔ | 5 | 5 | 3 | ✔ |
| 2NZ6-NI-3 | NI | Ni²⁺ | H4K1 | HIS.LYS. | HIS.LYS. | ✔ | 5 | 5 | 3 | ✔ |
| 2NZ6-NI-4 | NI | Ni²⁺ | H4K1 | HIS.LYS. | HIS.LYS. | ✔ | 5 | 5 | 3 | ✘ |
| 2NZ6-NI-5 | NI | Ni²⁺ | H3 | HIS. | HIS. | ✔ | 3 | 3 | 3 | ✔ |
| 7LSL-NI-1 | NI | Ni²⁺ | H5 | HIS. | HIS. | ✔ | 5 | 5 | 2 | ✘ |