| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 6DBQ-CA-3 | CA | Ca²⁺ | A1C1E1 | DA.DC.GLU. | DA.DC.GLU. | ✘ | 3 | 3 | 2 | ✔ |
| 6BCG-CA-1 | CA | Ca²⁺ | A1C1E1 | DA.DC.GLU. | DA.DC.GLU. | ✘ | 3 | 3 | 3 | ✔ |