| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1QIP-ZN-1 | ZN | Zn²⁺ | E2Q1 | GLN.GLU. | GLN.GLU.HOH. | ✔ | 3 | 5 | 2 | ✘ |
| 3VW9-ZN-1 | ZN | Zn²⁺ | E2Q1 | GLN.GLU. | GLN.GLU.HPJ. | ✔ | 3 | 4 | 2 | ✔ |
| 1FRO-ZN-1 | ZN | Zn²⁺ | E2Q1 | GLN.GLU. | GLN.GLU.HOH. | ✔ | 3 | 4 | 2 | ✘ |
| 3W0U-ZN-1 | ZN | Zn²⁺ | E2Q1 | GLN.GLU. | GLN.GLU.HPW. | ✔ | 3 | 4 | 2 | ✘ |
| 4V8K-CA-1 | CA | Ca²⁺ | E2Q1 | GLN.GLU. | GLN.GLU.HOH. | ✘ | 3 | 4 | 2 | ✔ |
| 7B1Y-CO-1 | CO | Co²⁺ | E2Q1 | GLN.GLU. | GLN.GLU. | ✘ | 3 | 3 | 2 | ✘ |
| 7B1Y-CO-2 | CO | Co²⁺ | E2Q1 | GLN.GLU. | GLN.GLU. | ✘ | 3 | 3 | 2 | ✘ |
| 7B24-CO-1 | CO | Co²⁺ | E2Q1 | GLN.GLU. | GLN.GLU. | ✘ | 3 | 3 | 2 | ✔ |
| 7B24-CO-2 | CO | Co²⁺ | E2Q1 | GLN.GLU. | GLN.GLU. | ✘ | 3 | 3 | 2 | ✘ |
| 7B23-CO-1 | CO | Co²⁺ | E2Q1 | GLN.GLU. | GLN.GLU.HOH. | ✘ | 3 | 4 | 2 | ✘ |
| 7B23-CO-2 | CO | Co²⁺ | E2Q1 | GLN.GLU. | GLN.GLU. | ✘ | 3 | 3 | 2 | ✘ |
| 7B25-CO-1 | CO | Co²⁺ | E2Q1 | GLN.GLU. | GLN.GLU. | ✘ | 3 | 3 | 2 | ✘ |
| 7B25-CO-2 | CO | Co²⁺ | E2Q1 | GLN.GLU. | GLN.GLU. | ✘ | 3 | 3 | 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 | ✘ |