| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 6E5B-NA-1 | NA | Na⁺ | D2I1S1 | ASP.ILE.SER. | ASP.ILE.SER. | ✘ | 4 | 4 | 2 | ✔ |
| 6E5B-NA-4 | NA | Na⁺ | D2I1S1 | ASP.ILE.SER. | ASP.ILE.SER. | ✘ | 4 | 4 | 2 | ✘ |
| 7AWE-NA-1 | NA | Na⁺ | D2I1S1 | ASP.ILE.SER. | ASP.HOH.ILE.SER. | ✘ | 4 | 5 | 2 | ✔ |
| 7AWE-NA-3 | NA | Na⁺ | D2I1S1 | ASP.ILE.SER. | ASP.HOH.ILE.SER. | ✘ | 4 | 5 | 2 | ✔ |
| 7B12-NA-3 | NA | Na⁺ | D2I1S1 | ASP.ILE.SER. | ASP.ILE.SER. | ✘ | 4 | 4 | 2 | ✔ |
| 7B12-NA-4 | NA | Na⁺ | D2I1S1 | ASP.ILE.SER. | ASP.ILE.SER. | ✘ | 4 | 4 | 2 | ✔ |