| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 4CDX-NA-119 | NA | Na⁺ | E1Q1 | GLN.GLU. | GLN.GLU. | ✘ | 2 | 2 | 2 | ✘ |
| 4CDX-NA-120 | NA | Na⁺ | E1Q1 | GLN.GLU. | GLN.GLU. | ✘ | 2 | 2 | 2 | ✘ |
| 6FAV-NA-1 | NA | Na⁺ | E1Q1 | GLN.GLU. | GLN.GLU.HOH. | ✔ | 2 | 6 | 2 | ✘ |
| 6FBW-NA-1 | NA | Na⁺ | E1Q1 | GLN.GLU. | GLN.GLU.HOH. | ✔ | 2 | 4 | 2 | ✘ |
| 6FBY-NA-1 | NA | Na⁺ | E1Q1 | GLN.GLU. | GLN.GLU.HOH. | ✔ | 2 | 7 | 2 | ✘ |
| 3CU7-CD-2 | CD | Cd²⁺ | E1Q1 | GLN.GLU. | GLN.GLU. | ✔ | 2 | 2 | 2 | ✔ |