| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 2PPC-CU-2 | CU | Cu²⁺ | H3 | HIS. | HIS.NO2. | ✔ | 3 | 4 | 2 | ✘ |
| 2PP8-CU-1 | CU | Cu²⁺ | H3 | HIS. | HIS. | ✔ | 3 | 3 | 2 | ✔ |
| 2PP8-CU-2 | CU | Cu²⁺ | H3 | HIS. | HIS. | ✔ | 3 | 3 | 2 | ✘ |
| 2PP8-CU-3 | CU | Cu²⁺ | H3 | HIS. | HIS. | ✔ | 3 | 3 | 2 | ✘ |
| 2PP7-CU-1 | CU | Cu²⁺ | H3 | HIS. | HIS. | ✔ | 3 | 3 | 2 | ✔ |
| 2PPA-CU-1 | CU | Cu²⁺ | H3 | HIS. | HIS. | ✔ | 3 | 3 | 2 | ✘ |
| 2E86-CU-1 | CU | Cu²⁺ | H3 | HIS. | AZI.HIS. | ✔ | 3 | 4 | 2 | ✘ |
| 2E86-CU-2 | CU | Cu²⁺ | H3 | HIS. | AZI.HIS. | ✔ | 3 | 4 | 2 | ✘ |
| 2E86-CU-3 | CU | Cu²⁺ | H3 | HIS. | AZI.HIS. | ✔ | 3 | 4 | 2 | ✘ |
| 2B08-CU-1 | CU | Cu⁺ | H3 | HIS. | HIS. | ✔ | 3 | 3 | 2 | ✘ |
| 2B08-CU-2 | CU | Cu⁺ | H3 | HIS. | HIS. | ✔ | 3 | 3 | 2 | ✘ |
| 2B08-CU-3 | CU | Cu⁺ | H3 | HIS. | HIS. | ✔ | 3 | 3 | 2 | ✘ |
| 2FJS-CU-1 | CU | Cu²⁺ | H3 | HIS. | HIS. | ✔ | 3 | 3 | 2 | ✘ |
| 2FJS-CU-2 | CU | Cu²⁺ | H3 | HIS. | HIS. | ✔ | 3 | 3 | 2 | ✘ |
| 2FJS-CU-3 | CU | Cu²⁺ | H3 | HIS. | HIS. | ✔ | 3 | 3 | 2 | ✘ |
| 2OM1-ZN-1 | ZN | Zn²⁺ | H3 | HIS. | HIS.SCN. | ✔ | 3 | 4 | 3 | ✘ |
| 2OM1-ZN-2 | ZN | Zn²⁺ | H3 | HIS. | HIS.SCN. | ✔ | 3 | 4 | 3 | ✘ |
| 2OLZ-ZN-1 | ZN | Zn²⁺ | H3 | HIS. | HIS.SCN. | ✔ | 3 | 4 | 3 | ✘ |
| 2OLZ-ZN-2 | ZN | Zn²⁺ | H3 | HIS. | HIS.SCN. | ✔ | 3 | 4 | 3 | ✘ |
| 2INS-ZN-1 | ZN | Zn²⁺ | H3 | HIS. | HIS. | ✔ | 3 | 3 | 3 | ✘ |