| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 6NKS-NA-2 | NA | Na⁺ | C1K1L1 | DC.LEU.LYS. | DC.LEU.LYS. | ✘ | 3 | 3 | 2 | ✔ |
| 3C2L-NA-2 | NA | Na⁺ | C1K1L1 | DC.LEU.LYS. | DC.HOH.LEU.LYS. | ✘ | 3 | 4 | 2 | ✔ |