| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 2AQN-CU-1 | CU | Cu²⁺ | E2 | GLU. | GLU. | ✔ | 2 | 2 | 2 | ✘ |
| 2AQN-CU-2 | CU | Cu²⁺ | E2 | GLU. | GLU. | ✔ | 2 | 2 | 2 | ✘ |
| 2HZC-ZN-1 | ZN | Zn²⁺ | E2 | GLU. | GLU.HOH. | ✔ | 2 | 6 | 2 | ✔ |
| 2IER-ZN-1 | ZN | Zn²⁺ | E2 | GLU. | GLU. | ✔ | 2 | 2 | 2 | ✘ |
| 1MY1-ZN-1 | ZN | Zn²⁺ | E2 | GLU. | GLU. | ✔ | 2 | 2 | 2 | ✔ |
| 1MXY-ZN-1 | ZN | Zn²⁺ | E2 | GLU. | GLU. | ✔ | 2 | 2 | 2 | ✔ |
| 1MXX-ZN-1 | ZN | Zn²⁺ | E2 | GLU. | GLU. | ✔ | 2 | 2 | 2 | ✘ |
| 1MXV-ZN-1 | ZN | Zn²⁺ | E2 | GLU. | GLU. | ✔ | 2 | 2 | 2 | ✘ |
| 1MZB-ZN-2 | ZN | Zn²⁺ | E2 | GLU. | GLU.HOH. | ✔ | 2 | 3 | 2 | ✔ |
| 1MZB-ZN-3 | ZN | Zn²⁺ | E2 | GLU. | GLU.HOH. | ✔ | 2 | 3 | 2 | ✘ |
| 2EH9-ZN-1 | ZN | Zn²⁺ | E2 | GLU. | GLU. | ✔ | 2 | 2 | 2 | ✔ |
| 2FAC-ZN-1 | ZN | Zn²⁺ | E2 | GLU. | GLU.HOH. | ✔ | 2 | 3 | 2 | ✔ |
| 2FAC-ZN-2 | ZN | Zn²⁺ | E2 | GLU. | GLU.HOH. | ✔ | 2 | 3 | 2 | ✘ |
| 2X6P-ZN-1 | ZN | Zn²⁺ | E2 | GLU. | GLU. | ✔ | 2 | 2 | 2 | ✘ |
| 2XB3-ZN-1 | ZN | Zn²⁺ | E2 | GLU. | GLU.HOH. | ✔ | 2 | 3 | 2 | ✔ |
| 2XB3-ZN-2 | ZN | Zn²⁺ | E2 | GLU. | GLU.HOH. | ✔ | 2 | 3 | 2 | ✘ |
| 3SWF-ZN-1 | ZN | Zn²⁺ | E2 | GLU. | GLU.HOH. | ✔ | 2 | 3 | 2 | ✔ |
| 3U1Y-ZN-1 | ZN | Zn²⁺ | E2 | GLU. | GLU. | ✔ | 2 | 2 | 2 | ✔ |
| 3U94-ZN-1 | ZN | Zn²⁺ | E2 | GLU. | GLU. | ✔ | 2 | 2 | 2 | ✔ |
| 3U94-ZN-5 | ZN | Zn²⁺ | E2 | GLU. | GLU.HOH. | ✔ | 2 | 3 | 2 | ✘ |