| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 2IMZ-ZN-1 | ZN | Zn²⁺ | H2X1 | HIS.SNN. | HIS.SNN. | ✔ | 3 | 3 | 2 | ✔ |
| 2IMZ-ZN-2 | ZN | Zn²⁺ | H2X1 | HIS.SNN. | HIS.SNN. | ✔ | 3 | 3 | 2 | ✔ |
| 3IFJ-ZN-1 | ZN | Zn²⁺ | H2X1 | HIS.SNN. | HIS.SNN. | ✔ | 3 | 3 | 2 | ✘ |
| 3IGD-ZN-1 | ZN | Zn²⁺ | H2X1 | HIS.SNN. | HIS.SNN. | ✔ | 3 | 3 | 2 | ✔ |
| 3IGD-ZN-2 | ZN | Zn²⁺ | H2X1 | HIS.SNN. | HIS.SNN. | ✔ | 3 | 3 | 2 | ✘ |
| 4KTX-ZN-1 | ZN | Zn²⁺ | H2X1 | DPP.HIS. | DPP.HIS. | ✘ | 3 | 3 | 2 | ✔ |
| 4ZJX-ZN-1 | ZN | Zn²⁺ | H2X1 | DAB.HIS. | DAB.HIS. | ✘ | 3 | 3 | 2 | ✔ |