| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 4CBK-NA-3 | NA | Na⁺ | E2 | GLU. | GLU.HOH. | ✔ | 2 | 3 | 2 | ✘ |
| 4CBK-NA-4 | NA | Na⁺ | E2 | GLU. | GLU.HOH. | ✔ | 2 | 3 | 2 | ✘ |
| 4CBK-NA-5 | NA | Na⁺ | E2 | GLU. | GLU. | ✔ | 2 | 2 | 2 | ✔ |
| 4CBK-NA-6 | NA | Na⁺ | E2 | GLU. | GLU.HOH. | ✔ | 2 | 3 | 2 | ✔ |
| 4CBK-NA-7 | NA | Na⁺ | E2 | GLU. | GLU.HOH. | ✔ | 2 | 3 | 2 | ✔ |
| 4CBK-NA-8 | NA | Na⁺ | E2 | GLU. | GLU.HOH. | ✔ | 2 | 3 | 2 | ✔ |
| 2HLP-NA-1 | NA | Na⁺ | E2 | GLU. | GLU.HOH. | ✔ | 2 | 3 | 2 | ✘ |
| 2HLP-NA-2 | NA | Na⁺ | E2 | GLU. | GLU.HOH. | ✔ | 2 | 3 | 2 | ✘ |
| 2DEH-NA-1 | NA | Na⁺ | E2 | GLU. | GLU. | ✔ | 2 | 2 | 2 | ✘ |
| 2DEH-NA-2 | NA | Na⁺ | E2 | GLU. | GLU. | ✔ | 2 | 2 | 2 | ✘ |
| 2GN2-NA-1 | NA | Na⁺ | E2 | GLU. | GLU. | ✔ | 2 | 2 | 2 | ✔ |
| 2GN2-NA-2 | NA | Na⁺ | E2 | GLU. | GLU. | ✔ | 2 | 2 | 2 | ✘ |
| 5X6S-NA-1 | NA | Na⁺ | E2 | GLU. | ASN.HOH. | ✔ | 2 | 5 | 2 | ✔ |
| 4R7U-NA-1 | NA | Na⁺ | E2 | GLU. | GLU.HOH. | ✔ | 2 | 4 | 2 | ✔ |
| 5U4H-NA-1 | NA | Na⁺ | E2 | GLU. | GLU.HOH. | ✔ | 2 | 6 | 2 | ✔ |
| 1CQX-NA-1 | NA | Na⁺ | E2 | GLU. | GLU. | ✔ | 2 | 2 | 2 | ✔ |
| 1D3A-NA-1 | NA | Na⁺ | E2 | GLU. | GLU. | ✔ | 2 | 2 | 2 | ✘ |
| 1D3A-NA-2 | NA | Na⁺ | E2 | GLU. | GLU. | ✔ | 2 | 2 | 2 | ✘ |
| 6LZY-NA-1 | NA | Na⁺ | E2 | GLU. | GLU.O4B. | ✔ | 2 | 3 | 2 | ✔ |
| 6LZX-NA-1 | NA | Na⁺ | E2 | GLU. | EYO.GLU. | ✔ | 2 | 3 | 2 | ✘ |