| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 6MRM-CA-177 | CA | Ca²⁺ | D3 | ASP. | ASP. | ✔ | 3 | 3 | 2 | ✘ |
| 6MRM-CA-178 | CA | Ca²⁺ | D3 | ASP. | ASP. | ✔ | 3 | 3 | 2 | ✘ |
| 6MRM-CA-179 | CA | Ca²⁺ | D3 | ASP. | ASP. | ✔ | 3 | 3 | 2 | ✘ |
| 6MRM-CA-180 | CA | Ca²⁺ | D3 | ASP. | ASP. | ✔ | 3 | 3 | 2 | ✘ |
| 6TCB-CA-1 | CA | Ca²⁺ | D3 | ASP. | ASP.HOH. | ✔ | 3 | 5 | 2 | ✔ |
| 6UTT-CA-1 | CA | Ca²⁺ | D3 | ASP. | ASP.HOH. | ✔ | 3 | 4 | 3 | ✘ |
| 6UTT-CA-2 | CA | Ca²⁺ | D3 | ASP. | ASP.HOH. | ✔ | 3 | 4 | 3 | ✘ |
| 6WXF-CA-1 | CA | Ca²⁺ | D3 | ASP. | ASP. | ✔ | 3 | 3 | 2 | ✘ |
| 6WXF-CA-9 | CA | Ca²⁺ | D3 | ASP. | ASP. | ✔ | 3 | 3 | 2 | ✘ |
| 6WXF-CA-14 | CA | Ca²⁺ | D3 | ASP. | ASP. | ✔ | 3 | 3 | 2 | ✘ |
| 6WXF-CA-18 | CA | Ca²⁺ | D3 | ASP. | ASP. | ✔ | 3 | 3 | 2 | ✘ |
| 6WZ1-CA-4 | CA | Ca²⁺ | D3 | ASP. | ASP.HOH. | ✔ | 3 | 5 | 2 | ✔ |
| 6WYH-CA-19 | CA | Ca²⁺ | D3 | ASP. | ASP.HOH. | ✔ | 3 | 6 | 3 | ✘ |
| 6WYH-CA-20 | CA | Ca²⁺ | D3 | ASP. | ASP.HOH. | ✔ | 3 | 6 | 3 | ✘ |
| 6H6U-CA-1 | CA | Ca²⁺ | D3 | ASP. | ASP. | ✔ | 3 | 3 | 3 | ✔ |
| 6H6U-CA-2 | CA | Ca²⁺ | D3 | ASP. | ASP. | ✔ | 3 | 3 | 3 | ✘ |
| 6H6U-CA-3 | CA | Ca²⁺ | D3 | ASP. | ASP. | ✔ | 3 | 3 | 3 | ✘ |
| 6H6U-CA-4 | CA | Ca²⁺ | D3 | ASP. | ASP. | ✔ | 3 | 3 | 3 | ✘ |
| 6H6U-CA-13 | CA | Ca²⁺ | D3 | ASP. | ASP. | ✔ | 3 | 3 | 3 | ✘ |
| 6H6U-CA-14 | CA | Ca²⁺ | D3 | ASP. | ASP. | ✔ | 3 | 3 | 3 | ✘ |