| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 6OET-CA-1 | CA | Ca²⁺ | C1D1G1 | ASP.DC.GLY. | ASP.DC.GLY. | ✘ | 3 | 3 | 2 | ✘ |
| 6OET-CA-2 | CA | Ca²⁺ | C1D1G1 | ASP.DC.GLY. | ASP.DC.GLY. | ✘ | 3 | 3 | 2 | ✔ |
| 6OES-CA-1 | CA | Ca²⁺ | C1D1G1 | ASP.DC.GLY. | ASP.DC.GLY. | ✘ | 3 | 3 | 2 | ✔ |
| 6OES-CA-2 | CA | Ca²⁺ | C1D1G1 | ASP.DC.GLY. | ASP.DC.GLY. | ✘ | 3 | 3 | 2 | ✔ |
| 3C0W-CA-2 | CA | Ca²⁺ | C1D1G1 | ASP.DC.GLY. | ASP.DC.GLY.HOH. | ✘ | 3 | 6 | 2 | ✔ |
| 2OA8-CA-1 | CA | Ca²⁺ | C1D1G1 | ASP.DC.DG. | ASP.DC.DG.HOH. | ✘ | 3 | 6 | 2 | ✔ |
| 2OA8-CA-2 | CA | Ca²⁺ | C1D1G1 | ASP.DC.DG. | ASP.DC.DG.HOH. | ✘ | 3 | 6 | 2 | ✘ |
| 2FKH-CA-1 | CA | Ca²⁺ | C1D1G1 | ASP.DC.DG. | ASP.DC.DG. | ✘ | 3 | 3 | 2 | ✔ |
| 3MXM-CA-3 | CA | Ca²⁺ | C1D1G1 | ASP.DC.DG. | ASP.DC.DG.HOH. | ✘ | 3 | 6 | 2 | ✔ |
| 3MXM-CA-4 | CA | Ca²⁺ | C1D1G1 | ASP.DC.DG. | ASP.DC.DG.HOH. | ✘ | 3 | 6 | 2 | ✘ |
| 3U3Y-CA-1 | CA | Ca²⁺ | C1D1G1 | ASP.DC.DG. | ASP.DC.DG.HOH. | ✘ | 3 | 5 | 2 | ✔ |
| 3U3Y-CA-2 | CA | Ca²⁺ | C1D1G1 | ASP.DC.DG. | ASP.DC.DG.HOH. | ✘ | 3 | 6 | 2 | ✔ |
| 1CLQ-CA-1 | CA | Ca²⁺ | C1D1G1 | ASP.DC.DG. | ASP.DC.DG.HOH. | ✘ | 3 | 4 | 2 | ✔ |
| 6UKI-CA-2 | CA | Ca²⁺ | C1D1G1 | ASP.DC.DG. | ASP.DC.DG.HOH. | ✘ | 3 | 4 | 2 | ✔ |
| 6UKH-CA-2 | CA | Ca²⁺ | C1D1G1 | ASP.DC.DG. | ASP.DC.DG.HOH. | ✘ | 3 | 4 | 2 | ✔ |