| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 6BD0-CA-2 | CA | Ca²⁺ | A2C1E1 | ALA.DA.DC.GLU. | ALA.DA.DC.GLU.HOH. | ✘ | 4 | 6 | 3 | ✔ |
| 6BCI-CA-1 | CA | Ca²⁺ | A2C1E1 | ALA.DA.DC.GLU. | ALA.DA.DC.GLU.HOH. | ✘ | 4 | 5 | 3 | ✔ |
| 6BCE-CA-1 | CA | Ca²⁺ | A2C1E1 | ALA.DA.DC.GLU. | ALA.DA.DC.GLU.HOH. | ✘ | 4 | 6 | 3 | ✔ |
| 4YHX-CA-1 | CA | Ca²⁺ | A2C1E1 | ALA.DA.DC.GLU. | ALA.DA.DC.GLU.HOH. | ✘ | 4 | 6 | 3 | ✔ |
| 5T2H-CA-1 | CA | Ca²⁺ | A2C1E1 | ALA.DA.DC.GLU. | ALA.DA.DC.GLU.HOH. | ✘ | 4 | 5 | 3 | ✔ |
| 5T8D-CA-2 | CA | Ca²⁺ | A2C1E1 | ALA.DA.DC.GLU. | ALA.DA.DC.GLU.HOH. | ✘ | 4 | 6 | 3 | ✔ |
| 5V0Q-CA-2 | CA | Ca²⁺ | A2C1E1 | ALA.DA.DC.GLU. | ALA.DA.DC.GLU.HOH. | ✘ | 4 | 6 | 3 | ✔ |
| 6UVW-CA-1 | CA | Ca²⁺ | A2C1E1 | ALA.DA.DC.GLU. | ALA.DA.DC.GLU.HOH. | ✘ | 4 | 5 | 3 | ✘ |