| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 3C5F-NA-1 | NA | Na⁺ | C2I2 | CYS.DC.ILE. | CYS.DC.HOH.ILE. | ✘ | 4 | 5 | 2 | ✔ |
| 3MGH-NA-2 | NA | Na⁺ | C2I2 | CYS.DC.ILE. | CYS.DC.HOH.ILE. | ✘ | 4 | 5 | 2 | ✘ |
| 5IIO-NA-2 | NA | Na⁺ | C2I2 | CYS.DC.ILE. | CYS.DC.HOH.ILE. | ✘ | 4 | 5 | 2 | ✔ |