| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 5D8Y-K-4 | K | K⁺ | N2Q4 | ASN.GLN. | ASN.GLN. | ✔ | 6 | 6 | 4 | ✘ |
| 4TOE-K-2 | K | K⁺ | N2Q4 | ASN.GLN. | ASN.GLN.HOH. | ✔ | 6 | 7 | 4 | ✘ |
| 3IS7-K-1 | K | K⁺ | N2Q4 | ASN.GLN. | ASN.GLN. | ✔ | 6 | 6 | 4 | ✘ |
| 4TOD-K-3 | K | K⁺ | N2Q4 | ASN.GLN. | ASN.GLN. | ✔ | 6 | 6 | 4 | ✘ |
| 4TOD-K-5 | K | K⁺ | N2Q4 | ASN.GLN. | ASN.GLN. | ✔ | 6 | 6 | 4 | ✘ |