| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 2RAQ-CA-5 | CA | Ca²⁺ | E1T1 | GLU.THR. | GLU.THR. | ✔ | 2 | 2 | 2 | ✘ |
| 2RAQ-CA-6 | CA | Ca²⁺ | E1T1 | GLU.THR. | GLU.THR. | ✔ | 2 | 2 | 2 | ✘ |
| 2RAQ-CA-11 | CA | Ca²⁺ | E1T1 | GLU.THR. | GLU.THR. | ✔ | 2 | 2 | 2 | ✔ |
| 2RAQ-CA-12 | CA | Ca²⁺ | E1T1 | GLU.THR. | GLU.THR. | ✔ | 2 | 2 | 2 | ✘ |
| 2RAQ-CA-13 | CA | Ca²⁺ | E1T1 | GLU.THR. | GLU.THR. | ✔ | 2 | 2 | 2 | ✘ |
| 2RAQ-CA-14 | CA | Ca²⁺ | E1T1 | GLU.THR. | GLU.THR. | ✔ | 2 | 2 | 2 | ✘ |
| 2RAQ-CA-15 | CA | Ca²⁺ | E1T1 | GLU.THR. | GLU.THR. | ✔ | 2 | 2 | 2 | ✔ |
| 2RAQ-CA-16 | CA | Ca²⁺ | E1T1 | GLU.THR. | GLU.THR. | ✔ | 2 | 2 | 2 | ✘ |
| 2RAQ-CA-21 | CA | Ca²⁺ | E1T1 | GLU.THR. | GLU.THR. | ✔ | 2 | 2 | 2 | ✘ |
| 2RAQ-CA-22 | CA | Ca²⁺ | E1T1 | GLU.THR. | GLU.THR. | ✔ | 2 | 2 | 2 | ✘ |
| 2RAQ-CA-25 | CA | Ca²⁺ | E1T1 | GLU.THR. | GLU.THR. | ✔ | 2 | 2 | 2 | ✘ |
| 2RAQ-CA-26 | CA | Ca²⁺ | E1T1 | GLU.THR. | GLU.THR. | ✔ | 2 | 2 | 2 | ✘ |
| 3NZE-CA-1 | CA | Ca²⁺ | E1T1 | GLU.THR. | GLU.HOH.THR. | ✔ | 2 | 3 | 2 | ✔ |
| 3NZE-CA-2 | CA | Ca²⁺ | E1T1 | GLU.THR. | GLU.THR. | ✔ | 2 | 2 | 2 | ✔ |
| 6JRF-CA-2 | CA | Ca²⁺ | E1T1 | DT.GLU. | DT.GLU.HOH. | ✘ | 2 | 4 | 2 | ✔ |