| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 3FHA-CA-1 | CA | Ca²⁺ | A1E2 | ALA.GLU. | ALA.GLU.HOH. | ✔ | 3 | 5 | 2 | ✔ |
| 3FHA-CA-2 | CA | Ca²⁺ | A1E2 | ALA.GLU. | ALA.GLU.HOH. | ✔ | 3 | 6 | 2 | ✘ |
| 4DMI-NA-1 | NA | Na⁺ | A1E2 | ALA.GLU. | ALA.GLU.HOH. | ✔ | 3 | 5 | 2 | ✔ |
| 4DMI-NA-2 | NA | Na⁺ | A1E2 | ALA.GLU. | ALA.GLU.HOH. | ✔ | 3 | 5 | 2 | ✘ |
| 4DMI-NA-3 | NA | Na⁺ | A1E2 | ALA.GLU. | ALA.GLU.HOH. | ✔ | 3 | 6 | 2 | ✘ |
| 4DMI-NA-4 | NA | Na⁺ | A1E2 | ALA.GLU. | ALA.GLU.HOH. | ✔ | 3 | 6 | 2 | ✘ |
| 6BCF-CA-2 | CA | Ca²⁺ | A1E2 | DA.GLU. | DA.GLU. | ✘ | 3 | 3 | 2 | ✔ |
| 7S14-CA-1 | CA | Ca²⁺ | A1E2 | ALA.GLU. | ALA.GLU.HOH. | ✔ | 3 | 4 | 2 | ✔ |