| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 4P4O-NA-1 | NA | Na⁺ | A1F1T1V1 | DA.PHE.THR.VAL. | DA.PHE.THR.VAL. | ✘ | 4 | 4 | 2 | ✔ |
| 4P4P-NA-1 | NA | Na⁺ | A1F1T1V1 | DA.PHE.THR.VAL. | DA.HOH.PHE.THR.VAL. | ✘ | 4 | 6 | 2 | ✔ |