| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 4BDO-NA-1 | NA | Na⁺ | D2E1I1 | ASP.GLU.ILE. | ASP.GLU.ILE. | ✔ | 4 | 4 | 2 | ✔ |
| 4BDO-NA-2 | NA | Na⁺ | D2E1I1 | ASP.GLU.ILE. | ASP.GLU.ILE. | ✔ | 4 | 4 | 2 | ✘ |
| 4BDL-NA-1 | NA | Na⁺ | D2E1I1 | ASP.GLU.ILE. | ASP.GLU.ILE. | ✔ | 4 | 4 | 2 | ✔ |
| 4BDL-NA-2 | NA | Na⁺ | D2E1I1 | ASP.GLU.ILE. | ASP.GLU.ILE. | ✔ | 4 | 4 | 2 | ✔ |