| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 6BFK-NA-2 | NA | Na⁺ | A1I1S1 | ALA.ILE.SER. | ALA.ILE.SER. | ✘ | 3 | 3 | 2 | ✔ |