| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 4S2X-MG-2 | MG | Mg²⁺ | E2Q1X1 | APC.GLN.GLU. | APC.GLN.GLU.HOH. | ✘ | 4 | 5 | 2 | ✘ |
| 4S2Y-MG-3 | MG | Mg²⁺ | E2Q1X1 | APC.GLN.GLU. | APC.GLN.GLU.HOH. | ✘ | 4 | 5 | 2 | ✘ |
| 4S2Y-MG-4 | MG | Mg²⁺ | E2Q1X1 | APC.GLN.GLU. | APC.GLN.GLU.HOH. | ✘ | 4 | 5 | 2 | ✘ |
| 6D1V-MG-3 | MG | Mg²⁺ | E2Q1X1 | APC.GLN.GLU. | APC.GLN.GLU.HOH. | ✘ | 4 | 5 | 2 | ✔ |