| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 4AA1-ZN-1 | ZN | Zn²⁺ | E1I1 | GLU.ILE. | GLU.ILE. | ✘ | 2 | 2 | 2 | ✔ |
| 4BA1-NA-1 | NA | Na⁺ | E1I1 | GLU.ILE. | GLU.ILE. | ✘ | 2 | 2 | 2 | ✔ |