| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 2CHI-CA-25 | CA | Ca²⁺ | E3 | GLU. | GLU. | ✔ | 3 | 3 | 3 | ✘ |
| 2CHI-CA-26 | CA | Ca²⁺ | E3 | GLU. | GLU. | ✔ | 3 | 3 | 3 | ✘ |
| 2CHI-CA-27 | CA | Ca²⁺ | E3 | GLU. | GLU. | ✔ | 3 | 3 | 3 | ✘ |
| 2CHI-CA-28 | CA | Ca²⁺ | E3 | GLU. | GLU. | ✔ | 3 | 3 | 3 | ✘ |
| 2CHI-CA-29 | CA | Ca²⁺ | E3 | GLU. | GLU. | ✔ | 3 | 3 | 3 | ✘ |
| 2CHI-CA-30 | CA | Ca²⁺ | E3 | GLU. | GLU. | ✔ | 3 | 3 | 3 | ✘ |
| 2CHI-CA-31 | CA | Ca²⁺ | E3 | GLU. | GLU. | ✔ | 3 | 3 | 3 | ✘ |
| 2CHI-CA-32 | CA | Ca²⁺ | E3 | GLU. | GLU. | ✔ | 3 | 3 | 3 | ✘ |
| 2CHI-CA-33 | CA | Ca²⁺ | E3 | GLU. | GLU. | ✔ | 3 | 3 | 3 | ✘ |
| 2CHI-CA-34 | CA | Ca²⁺ | E3 | GLU. | GLU. | ✔ | 3 | 3 | 3 | ✘ |
| 2CN7-CA-25 | CA | Ca²⁺ | E3 | GLU. | GLU.HOH. | ✔ | 3 | 6 | 3 | ✘ |
| 2CN7-CA-26 | CA | Ca²⁺ | E3 | GLU. | GLU.HOH. | ✔ | 3 | 6 | 3 | ✘ |
| 2CN7-CA-27 | CA | Ca²⁺ | E3 | GLU. | GLU.HOH. | ✔ | 3 | 6 | 3 | ✘ |
| 2CN7-CA-28 | CA | Ca²⁺ | E3 | GLU. | GLU.HOH. | ✔ | 3 | 6 | 3 | ✘ |
| 2CN7-CA-29 | CA | Ca²⁺ | E3 | GLU. | GLU.HOH. | ✔ | 3 | 6 | 3 | ✘ |
| 2CN7-CA-30 | CA | Ca²⁺ | E3 | GLU. | GLU.HOH. | ✔ | 3 | 6 | 3 | ✘ |
| 2CN7-CA-31 | CA | Ca²⁺ | E3 | GLU. | GLU.HOH. | ✔ | 3 | 6 | 3 | ✘ |
| 2CN7-CA-32 | CA | Ca²⁺ | E3 | GLU. | GLU.HOH. | ✔ | 3 | 6 | 3 | ✘ |
| 3H36-CA-1 | CA | Ca²⁺ | E3 | GLU. | GLU.HOH. | ✔ | 3 | 6 | 2 | ✔ |
| 3H36-CA-2 | CA | Ca²⁺ | E3 | GLU. | GLU.HOH. | ✔ | 3 | 6 | 2 | ✘ |