| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 5T2N-CA-2 | CA | Ca²⁺ | A1C1E1G1 | ALA.DC.DG.GLU. | ALA.DC.DG.GLU.HOH. | ✘ | 4 | 6 | 3 | ✔ |
| 5ESP-CA-1 | CA | Ca²⁺ | A1C1E1G1 | DA.DC.GLU.GLY. | DA.DC.GLU.GLY. | ✘ | 4 | 4 | 3 | ✔ |
| 6UW0-CA-2 | CA | Ca²⁺ | A1C1E1G1 | ALA.DC.DG.GLU. | ALA.DC.DG.GLU.HOH. | ✘ | 4 | 5 | 3 | ✔ |