| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 3NYP-K-1 | K | K⁺ | G3 | DG. | DG. | ✔ | 3 | 3 | 2 | ✘ |
| 3QCR-K-1 | K | K⁺ | G3 | DG. | DG. | ✔ | 3 | 3 | 2 | ✔ |
| 3QCR-K-2 | K | K⁺ | G3 | DG. | DG. | ✔ | 3 | 3 | 2 | ✘ |
| 5HIX-K-1 | K | K⁺ | G3 | DG. | DG. | ✔ | 3 | 3 | 2 | ✘ |
| 5HIX-K-4 | K | K⁺ | G3 | DG. | DG. | ✔ | 3 | 3 | 2 | ✘ |