| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 2PC5-MG-1 | MG | Mg²⁺ | E3 | GLU. | GLU. | ✔ | 3 | 3 | 3 | ✘ |
| 2IOU-MG-1 | MG | Mg²⁺ | E3 | GLU. | GLU. | ✔ | 3 | 3 | 3 | ✘ |
| 2IOU-MG-4 | MG | Mg²⁺ | E3 | GLU. | GLU. | ✔ | 3 | 3 | 3 | ✘ |
| 1Q5H-MG-1 | MG | Mg²⁺ | E3 | GLU. | GLU.HOH. | ✔ | 3 | 4 | 3 | ✔ |
| 3T80-MG-2 | MG | Mg²⁺ | E3 | GLU. | GLU. | ✔ | 3 | 3 | 3 | ✘ |
| 3LD0-MG-2 | MG | Mg²⁺ | E3 | GLU. | GLU.HOH. | ✔ | 3 | 2 | 3 | ✘ |
| 3LD0-MG-3 | MG | Mg²⁺ | E3 | GLU. | GLU.HOH. | ✔ | 3 | 4 | 3 | ✔ |
| 3GHZ-MG-1 | MG | Mg²⁺ | E3 | GLU. | ASP.HOH. | ✔ | 3 | 6 | 3 | ✔ |
| 3ESJ-MG-1 | MG | Mg²⁺ | E3 | GLU. | GLU. | ✔ | 3 | 3 | 3 | ✘ |
| 3FSX-MG-2 | MG | Mg²⁺ | E3 | GLU. | GLU. | ✔ | 3 | 3 | 3 | ✘ |
| 3FSY-MG-2 | MG | Mg²⁺ | E3 | GLU. | GLU.HOH. | ✔ | 3 | 9 | 3 | ✔ |
| 3ARA-MG-1 | MG | Mg²⁺ | E3 | GLU. | GLU.HOH. | ✔ | 3 | 4 | 3 | ✔ |
| 3ARN-MG-2 | MG | Mg²⁺ | E3 | GLU. | GLU.HOH. | ✔ | 3 | 4 | 3 | ✔ |
| 4LNK-MG-1 | MG | Mg²⁺ | E3 | GLU. | GLU.HOH. | ✔ | 3 | 5 | 2 | ✔ |
| 4LNK-MG-2 | MG | Mg²⁺ | E3 | GLU. | GLU.HOH. | ✔ | 3 | 5 | 2 | ✘ |
| 2VBM-MG-1 | MG | Mg²⁺ | E3 | GLU. | GLU.HOH. | ✔ | 3 | 6 | 3 | ✘ |
| 1YU4-MG-2 | MG | Mg²⁺ | E3 | GLU. | GLU.HOH. | ✔ | 3 | 6 | 3 | ✔ |
| 5L8F-MG-1 | MG | Mg²⁺ | E3 | GLU. | GLU.HOH. | ✔ | 3 | 4 | 2 | ✔ |
| 5L8F-MG-2 | MG | Mg²⁺ | E3 | GLU. | GLU. | ✔ | 3 | 3 | 2 | ✔ |
| 5L8F-MG-3 | MG | Mg²⁺ | E3 | GLU. | GLU. | ✔ | 3 | 3 | 2 | ✘ |