| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 4HAD-NA-1 | NA | Na⁺ | A1C1I1Q1R1 | ALA.ARG.CYS.GLN.ILE. | ALA.ARG.CYS.GLN.ILE. | ✔ | 5 | 5 | 2 | ✔ |
| 4HAD-NA-2 | NA | Na⁺ | A1C1I1Q1R1 | ALA.ARG.CYS.GLN.ILE. | ALA.ARG.CYS.GLN.ILE. | ✔ | 5 | 5 | 2 | ✔ |
| 4HAD-NA-3 | NA | Na⁺ | A1C1I1Q1R1 | ALA.ARG.CYS.GLN.ILE. | ALA.ARG.CYS.GLN.ILE. | ✔ | 5 | 5 | 2 | ✘ |
| 4HAD-NA-4 | NA | Na⁺ | A1C1I1Q1R1 | ALA.ARG.CYS.GLN.ILE. | ALA.ARG.CYS.GLN.ILE. | ✔ | 5 | 5 | 2 | ✘ |