| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 6TM4-MG-1 | MG | Mg²⁺ | E1G1L1 | GLU.GLY.LEU. | GLU.GLY.LEU. | ✘ | 3 | 3 | 2 | ✔ |
| 6TM4-MG-2 | MG | Mg²⁺ | E1G1L1 | GLU.GLY.LEU. | GLU.GLY.LEU. | ✘ | 3 | 3 | 2 | ✘ |
| 4D1Q-NA-1 | NA | Na⁺ | E1G1L1 | DG.GLU.LEU. | DG.GLU.LEU. | ✘ | 3 | 3 | 2 | ✔ |
| 4D1Q-NA-2 | NA | Na⁺ | E1G1L1 | DG.GLU.LEU. | DG.GLU.LEU. | ✘ | 3 | 3 | 2 | ✘ |
| 4D1Q-NA-5 | NA | Na⁺ | E1G1L1 | DG.GLU.LEU. | DG.GLU.LEU. | ✘ | 3 | 3 | 2 | ✔ |
| 4D1Q-NA-6 | NA | Na⁺ | E1G1L1 | DG.GLU.LEU. | DG.GLU.LEU. | ✘ | 3 | 3 | 2 | ✘ |