| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 8EM7-CA-1 | CA | Ca²⁺ | D2E1P1 | ASP.GLU.PRO. | ASP.GLU.PRO. | ✔ | 4 | 4 | 2 | ✔ |
| 8EM7-CA-2 | CA | Ca²⁺ | D2E1P1 | ASP.GLU.PRO. | ASP.GLU.PRO. | ✔ | 4 | 4 | 2 | ✘ |