| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 3VL6-CA-2 | CA | Ca²⁺ | D3 | ASP. | ASP.HOH.IPM. | ✔ | 3 | 6 | 2 | ✘ |
| 3VL7-CA-1 | CA | Ca²⁺ | D3 | ASP. | ASP.HOH.IPM. | ✔ | 3 | 6 | 2 | ✘ |
| 3VL7-CA-2 | CA | Ca²⁺ | D3 | ASP. | ASP.HOH.IPM. | ✔ | 3 | 6 | 2 | ✘ |
| 1XKD-CA-2 | CA | Ca²⁺ | D3 | ASP. | ASP.HOH.ICT. | ✔ | 3 | 7 | 2 | ✔ |
| 6AJ8-CA-1 | CA | Ca²⁺ | D3 | ASP. | ASP.HOH. | ✔ | 3 | 4 | 2 | ✘ |
| 6AJ8-CA-2 | CA | Ca²⁺ | D3 | ASP. | ASP.HOH. | ✔ | 3 | 4 | 2 | ✘ |
| 6AJC-CA-1 | CA | Ca²⁺ | D3 | ASP. | ASP.ICT. | ✔ | 3 | 4 | 2 | ✘ |
| 6AJC-CA-2 | CA | Ca²⁺ | D3 | ASP. | ASP.HOH.ICT. | ✔ | 3 | 5 | 2 | ✘ |
| 6BKX-CA-1 | CA | Ca²⁺ | D3 | ASP. | ASP.HOH.ICT. | ✔ | 3 | 6 | 2 | ✘ |
| 6BKX-CA-2 | CA | Ca²⁺ | D3 | ASP. | ASP.HOH.ICT. | ✔ | 3 | 6 | 2 | ✘ |
| 5CXF-CA-1 | CA | Ca²⁺ | D3 | ASP. | ASP. | ✔ | 3 | 3 | 3 | ✘ |
| 4FTS-CA-61 | CA | Ca²⁺ | D3 | ASP. | ASP. | ✔ | 3 | 3 | 3 | ✘ |
| 4FTS-CA-62 | CA | Ca²⁺ | D3 | ASP. | ASP. | ✔ | 3 | 3 | 3 | ✘ |
| 4FTS-CA-63 | CA | Ca²⁺ | D3 | ASP. | ASP. | ✔ | 3 | 3 | 3 | ✘ |
| 4FTS-CA-64 | CA | Ca²⁺ | D3 | ASP. | ASP. | ✔ | 3 | 3 | 3 | ✘ |
| 4FTS-CA-65 | CA | Ca²⁺ | D3 | ASP. | ASP. | ✔ | 3 | 3 | 3 | ✘ |
| 4FTS-CA-66 | CA | Ca²⁺ | D3 | ASP. | ASP. | ✔ | 3 | 3 | 3 | ✘ |
| 4FTS-CA-67 | CA | Ca²⁺ | D3 | ASP. | ASP. | ✔ | 3 | 3 | 3 | ✘ |
| 4FTS-CA-68 | CA | Ca²⁺ | D3 | ASP. | ASP. | ✔ | 3 | 3 | 3 | ✘ |
| 4FTS-CA-69 | CA | Ca²⁺ | D3 | ASP. | ASP. | ✔ | 3 | 3 | 3 | ✘ |