| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 6IWL-CA-1 | CA | Ca²⁺ | E2I2 | GLU.ILE. | GLU.HOH.ILE. | ✔ | 4 | 6 | 2 | ✘ |
| 6IWL-CA-2 | CA | Ca²⁺ | E2I2 | GLU.ILE. | GLU.HOH.ILE. | ✔ | 4 | 6 | 2 | ✘ |
| 7FCM-CA-1 | CA | Ca²⁺ | E2I2 | GLU.ILE. | GLU.HOH.ILE. | ✔ | 4 | 6 | 2 | ✘ |
| 7FCM-CA-2 | CA | Ca²⁺ | E2I2 | GLU.ILE. | GLU.HOH.ILE. | ✔ | 4 | 6 | 2 | ✔ |