| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 2CHI-CA-33 | CA | Ca²⁺ | E3 | GLU. | GLU. | ✔ | 3 | 3 | 3 | ✘ |
| 2CHI-CA-34 | CA | Ca²⁺ | E3 | GLU. | GLU. | ✔ | 3 | 3 | 3 | ✘ |
| 4A0X-ZN-1 | ZN | Zn²⁺ | E3 | GLU. | GLU. | ✔ | 3 | 3 | 2 | ✔ |
| 4A0X-ZN-2 | ZN | Zn²⁺ | E3 | GLU. | GLU. | ✔ | 3 | 3 | 2 | ✔ |
| 2X4H-ZN-1 | ZN | Zn²⁺ | E3 | GLU. | GLU. | ✔ | 3 | 3 | 2 | ✔ |
| 2X4H-ZN-2 | ZN | Zn²⁺ | E3 | GLU. | GLU. | ✔ | 3 | 3 | 2 | ✔ |
| 4I0J-ZN-1 | ZN | Zn²⁺ | E3 | GLU. | GLU.HOH. | ✔ | 3 | 4 | 2 | ✔ |
| 4I0J-ZN-2 | ZN | Zn²⁺ | E3 | GLU. | GLU.HOH. | ✔ | 3 | 4 | 2 | ✘ |
| 4N3V-NA-1 | NA | Na⁺ | E3 | GLU. | GLU.HOH. | ✔ | 3 | 6 | 3 | ✔ |
| 5CMR-NA-13 | NA | Na⁺ | E3 | GLU. | GLU. | ✔ | 3 | 3 | 3 | ✘ |
| 5CMR-NA-14 | NA | Na⁺ | E3 | GLU. | GLU. | ✔ | 3 | 3 | 3 | ✘ |
| 5CMR-NA-15 | NA | Na⁺ | E3 | GLU. | GLU. | ✔ | 3 | 3 | 3 | ✘ |
| 5CMR-NA-16 | NA | Na⁺ | E3 | GLU. | GLU. | ✔ | 3 | 3 | 3 | ✘ |
| 5CMR-NA-17 | NA | Na⁺ | E3 | GLU. | GLU. | ✔ | 3 | 3 | 3 | ✘ |
| 5CMR-NA-18 | NA | Na⁺ | E3 | GLU. | GLU. | ✔ | 3 | 3 | 3 | ✘ |
| 5CMR-NA-19 | NA | Na⁺ | E3 | GLU. | GLU. | ✔ | 3 | 3 | 3 | ✘ |
| 5CMR-NA-20 | NA | Na⁺ | E3 | GLU. | GLU. | ✔ | 3 | 3 | 3 | ✘ |
| 5CMR-NA-21 | NA | Na⁺ | E3 | GLU. | GLU. | ✔ | 3 | 3 | 3 | ✘ |
| 2KIK-ZN-1 | ZN | Zn²⁺ | E3 | GLU. | GLU. | ✔ | 3 | 3 | 2 | ✔ |
| 1H48-MN-1 | MN | Mn²⁺ | E3 | GLU. | GLU.HOH. | ✔ | 3 | 4 | 3 | ✔ |