| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 6UWN-CA-6 | CA | Ca²⁺ | D1G1 | ASP.GLY. | ASP.GLY. | ✔ | 2 | 2 | 2 | ✘ |
| 6UWN-CA-14 | CA | Ca²⁺ | D1G1 | ASP.GLY. | ASP.GLY. | ✔ | 2 | 2 | 2 | ✘ |
| 6WXF-CA-19 | CA | Ca²⁺ | D1G1 | ASP.GLY. | ASP.GLY. | ✔ | 2 | 2 | 2 | ✔ |
| 6WXF-CA-33 | CA | Ca²⁺ | D1G1 | ASP.GLY. | ASP.GLY. | ✔ | 2 | 2 | 2 | ✘ |
| 7M3G-CA-1 | CA | Ca²⁺ | D1G1 | ASP.GLY. | ASP.GLY. | ✔ | 2 | 2 | 2 | ✔ |
| 7M3F-CA-1 | CA | Ca²⁺ | D1G1 | ASP.GLY. | ASP.GLY. | ✔ | 2 | 2 | 2 | ✘ |