| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 3HKN-ZN-1 | ZN | Zn²⁺ | H3X1 | HIS.Z3K. | HIS.Z3K. | ✘ | 4 | 4 | 2 | ✔ |
| 3HKT-ZN-1 | ZN | Zn²⁺ | H3X1 | 1SD.HIS. | 1SD.HIS. | ✘ | 4 | 4 | 2 | ✔ |
| 1QJJ-ZN-1 | ZN | Zn²⁺ | H3X1 | HIS.HOA. | HIS.HOA. | ✘ | 4 | 4 | 2 | ✔ |
| 7OYN-ZN-1 | ZN | Zn²⁺ | H3X1 | 65T.HIS. | 65T.HIS. | ✘ | 4 | 4 | 2 | ✔ |
| 7OYM-ZN-1 | ZN | Zn²⁺ | H3X1 | 65T.HIS. | 65T.HIS. | ✘ | 4 | 4 | 2 | ✔ |
| 7OYR-ZN-1 | ZN | Zn²⁺ | H3X1 | 65T.HIS. | 65T.HIS. | ✘ | 4 | 4 | 2 | ✔ |
| 7OYQ-ZN-1 | ZN | Zn²⁺ | H3X1 | 65T.HIS. | 65T.HIS. | ✘ | 4 | 4 | 2 | ✔ |