| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 3R2R-NA-2 | NA | Na⁺ | N4 | ASN. | ASN.HOH. | ✔ | 4 | 7 | 4 | ✘ |
| 3R2R-NA-3 | NA | Na⁺ | N4 | ASN. | ASN.HOH. | ✔ | 4 | 6 | 4 | ✘ |
| 3R2R-NA-4 | NA | Na⁺ | N4 | ASN. | ASN.HOH. | ✔ | 4 | 6 | 4 | ✘ |
| 3R2R-NA-5 | NA | Na⁺ | N4 | ASN. | ASN.HOH. | ✔ | 4 | 7 | 4 | ✘ |
| 3R2R-NA-6 | NA | Na⁺ | N4 | ASN. | ASN.HOH. | ✔ | 4 | 6 | 4 | ✘ |
| 3R2R-NA-7 | NA | Na⁺ | N4 | ASN. | ASN.HOH. | ✔ | 4 | 6 | 4 | ✘ |