| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 2WSB-MG-1 | MG | Mg²⁺ | W2 | TRP. | HOH.TRP. | ✔ | 2 | 6 | 2 | ✔ |
| 2WSB-MG-2 | MG | Mg²⁺ | W2 | TRP. | HOH.TRP. | ✔ | 2 | 6 | 2 | ✘ |
| 2WDZ-MG-1 | MG | Mg²⁺ | W2 | TRP. | HOH.TRP. | ✔ | 2 | 6 | 2 | ✘ |
| 2WDZ-MG-2 | MG | Mg²⁺ | W2 | TRP. | HOH.TRP. | ✔ | 2 | 6 | 2 | ✘ |
| 3AWD-MG-1 | MG | Mg²⁺ | W2 | TRP. | HOH.TRP. | ✔ | 2 | 6 | 2 | ✔ |
| 3AWD-MG-2 | MG | Mg²⁺ | W2 | TRP. | HOH.TRP. | ✔ | 2 | 6 | 2 | ✘ |
| 3LQF-MG-1 | MG | Mg²⁺ | W2 | TRP. | HOH.TRP. | ✔ | 2 | 6 | 2 | ✔ |
| 3LQF-MG-2 | MG | Mg²⁺ | W2 | TRP. | HOH.TRP. | ✔ | 2 | 6 | 2 | ✔ |