| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 3V7F-CA-5 | CA | Ca²⁺ | E2S1 | GLU.SER. | GLU.SER. | ✔ | 3 | 3 | 2 | ✘ |
| 3V7F-CA-6 | CA | Ca²⁺ | E2S1 | GLU.SER. | GLU.SER. | ✔ | 3 | 3 | 2 | ✘ |
| 5EQ2-CA-1 | CA | Ca²⁺ | E2 | GLU. | GLU.HOH. | ✔ | 2 | 6 | 2 | ✘ |
| 5EQ4-CA-1 | CA | Ca²⁺ | E2 | GLU. | GLU.HOH. | ✔ | 2 | 6 | 2 | ✘ |
| 5ER7-CA-1 | CA | Ca²⁺ | E2G1 | GLU.GLY. | GLU.GLY. | ✔ | 3 | 3 | 2 | ✔ |
| 5ER7-CA-2 | CA | Ca²⁺ | E2G1 | GLU.GLY. | GLU.GLY. | ✔ | 3 | 3 | 2 | ✘ |
| 5ER7-CA-3 | CA | Ca²⁺ | E2G1 | GLU.GLY. | GLU.GLY. | ✔ | 3 | 3 | 2 | ✘ |
| 5ER7-CA-4 | CA | Ca²⁺ | E2G1 | GLU.GLY. | GLU.GLY. | ✔ | 3 | 3 | 2 | ✘ |
| 5ER7-CA-5 | CA | Ca²⁺ | E2G1 | GLU.GLY. | GLU.GLY. | ✔ | 3 | 3 | 2 | ✘ |
| 5ER7-CA-6 | CA | Ca²⁺ | E2G1 | GLU.GLY. | GLU.GLY. | ✔ | 3 | 3 | 2 | ✘ |
| 5ER7-CA-7 | CA | Ca²⁺ | E2G1 | GLU.GLY. | GLU.GLY. | ✔ | 3 | 3 | 2 | ✘ |
| 5ER7-CA-8 | CA | Ca²⁺ | E2G1 | GLU.GLY. | GLU.GLY. | ✔ | 3 | 3 | 2 | ✘ |
| 5ER7-CA-9 | CA | Ca²⁺ | E2G1 | GLU.GLY. | GLU.GLY. | ✔ | 3 | 3 | 2 | ✘ |
| 5ER7-CA-10 | CA | Ca²⁺ | E2G1 | GLU.GLY. | GLU.GLY. | ✔ | 3 | 3 | 2 | ✔ |
| 5ER7-CA-11 | CA | Ca²⁺ | E2G1 | GLU.GLY. | GLU.GLY. | ✔ | 3 | 3 | 2 | ✘ |
| 5ER7-CA-12 | CA | Ca²⁺ | E2G1 | GLU.GLY. | GLU.GLY. | ✔ | 3 | 3 | 2 | ✘ |
| 5F47-CA-1 | CA | Ca²⁺ | E1F1 | GLU.PHE. | GLU.HOH.PHE. | ✔ | 2 | 7 | 2 | ✔ |
| 5F47-CA-2 | CA | Ca²⁺ | E1F1 | GLU.PHE. | GLU.HOH.PHE. | ✔ | 2 | 7 | 2 | ✘ |
| 5A9T-CA-1 | CA | Ca²⁺ | G1R1 | ARG.GLY. | ARG.GLY.HOH. | ✔ | 2 | 4 | 2 | ✔ |
| 5A9T-CA-2 | CA | Ca²⁺ | G1R1 | ARG.GLY. | ARG.GLY.HOH. | ✔ | 2 | 4 | 2 | ✘ |