| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 3R3G-NA-1 | NA | Na⁺ | I1Y2 | ILE.TYR. | HOH.ILE.TYR. | ✘ | 3 | 6 | 3 | ✔ |
| 3R3G-NA-2 | NA | Na⁺ | I1Y2 | ILE.TYR. | HOH.ILE.TYR. | ✘ | 3 | 6 | 3 | ✘ |