| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 3NDH-NA-1 | NA | Na⁺ | C1D1I1 | ASP.DC.ILE. | ASP.DC.HOH.ILE. | ✘ | 3 | 6 | 2 | ✔ |
| 3NDH-NA-2 | NA | Na⁺ | C1D1I1 | ASP.DC.ILE. | ASP.DC.HOH.ILE. | ✘ | 3 | 6 | 2 | ✔ |