| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 2AK1-ZN-2 | ZN | Zn²⁺ | H1Q1 | GLN.HIS. | GLN.HIS. | ✘ | 2 | 2 | 2 | ✘ |
| 2AJY-ZN-1 | ZN | Zn²⁺ | H1Q1 | GLN.HIS. | GLN.HIS. | ✘ | 2 | 2 | 2 | ✔ |
| 2AJY-ZN-2 | ZN | Zn²⁺ | H1Q1 | GLN.HIS. | GLN.HIS. | ✘ | 2 | 2 | 2 | ✘ |
| 4KYH-ZN-1 | ZN | Zn²⁺ | H1Q1 | GLN.HIS. | GLN.HIS. | ✔ | 2 | 2 | 2 | ✘ |
| 4KYH-ZN-2 | ZN | Zn²⁺ | H1Q1 | GLN.HIS. | GLN.HIS. | ✔ | 2 | 2 | 2 | ✘ |