| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 3U27-CA-1 | CA | Ca²⁺ | N3 | ASN. | ASN.HOH. | ✔ | 3 | 7 | 3 | ✘ |
| 4R42-CA-5 | CA | Ca²⁺ | N3 | ASN. | ASN.HOH. | ✔ | 3 | 6 | 3 | ✔ |
| 4R42-CA-6 | CA | Ca²⁺ | N3 | ASN. | ASN.HOH. | ✔ | 3 | 6 | 3 | ✘ |
| 4R36-CA-1 | CA | Ca²⁺ | N3 | ASN. | ASN.HOH. | ✔ | 3 | 6 | 3 | ✔ |
| 4R37-CA-1 | CA | Ca²⁺ | N3 | ASN. | ASN.HOH. | ✔ | 3 | 7 | 3 | ✘ |
| 1HM9-CA-1 | CA | Ca²⁺ | N3 | ASN. | ASN.HOH. | ✔ | 3 | 6 | 3 | ✔ |
| 6J42-CA-5 | CA | Ca²⁺ | N3 | ASN. | ASN.HOH. | ✔ | 3 | 4 | 3 | ✔ |
| 6J42-CA-6 | CA | Ca²⁺ | N3 | ASN. | ASN.HOH. | ✔ | 3 | 4 | 3 | ✘ |