| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 3FG1-CA-1 | CA | Ca²⁺ | E1N1 | ASN.GLU. | ASN.GLU.HOH. | ✔ | 2 | 7 | 2 | ✔ |
| 3FG1-CA-2 | CA | Ca²⁺ | E1N1 | ASN.GLU. | ASN.GLU.HOH. | ✔ | 2 | 7 | 2 | ✘ |
| 3FG1-CA-3 | CA | Ca²⁺ | E1N1 | ASN.GLU. | ASN.GLU.HOH. | ✔ | 2 | 7 | 2 | ✘ |
| 3FG1-CA-4 | CA | Ca²⁺ | E1N1 | ASN.GLU. | ASN.GLU.HOH. | ✔ | 2 | 7 | 2 | ✘ |
| 3FG3-CA-1 | CA | Ca²⁺ | E1N1 | ASN.GLU. | ASN.GLU.HOH. | ✔ | 2 | 7 | 2 | ✘ |
| 3FG3-CA-2 | CA | Ca²⁺ | E1N1 | ASN.GLU. | ASN.GLU.HOH. | ✔ | 2 | 7 | 2 | ✘ |
| 3FG3-CA-3 | CA | Ca²⁺ | E1N1 | ASN.GLU. | ASN.GLU.HOH. | ✔ | 2 | 7 | 2 | ✘ |
| 3FG3-CA-4 | CA | Ca²⁺ | E1N1 | ASN.GLU. | ASN.GLU.HOH. | ✔ | 2 | 7 | 2 | ✘ |
| 3FG4-CA-1 | CA | Ca²⁺ | E1N1 | ASN.GLU. | ASN.GLU.HOH. | ✔ | 2 | 7 | 2 | ✘ |
| 3FG4-CA-2 | CA | Ca²⁺ | E1N1 | ASN.GLU. | ASN.GLU.HOH. | ✔ | 2 | 7 | 2 | ✘ |
| 3FG4-CA-3 | CA | Ca²⁺ | E1N1 | ASN.GLU. | ASN.GLU.HOH. | ✔ | 2 | 7 | 2 | ✘ |
| 3FG4-CA-4 | CA | Ca²⁺ | E1N1 | ASN.GLU. | ASN.GLU.HOH. | ✔ | 2 | 7 | 2 | ✘ |
| 2H1I-CA-1 | CA | Ca²⁺ | E1N1 | ASN.GLU. | ASN.GLU. | ✔ | 2 | 2 | 2 | ✔ |
| 4ITX-CA-1 | CA | Ca²⁺ | E1N1 | ASN.GLU. | ASN.GLU.HOH. | ✔ | 2 | 6 | 2 | ✔ |
| 4ITX-CA-2 | CA | Ca²⁺ | E1N1 | ASN.GLU. | ASN.GLU.HOH. | ✔ | 2 | 6 | 2 | ✘ |
| 4ITX-CA-3 | CA | Ca²⁺ | E1N1 | ASN.GLU. | ASN.GLU.HOH. | ✔ | 2 | 6 | 2 | ✘ |
| 4ITX-CA-4 | CA | Ca²⁺ | E1N1 | ASN.GLU. | ASN.GLU.HOH. | ✔ | 2 | 6 | 2 | ✘ |
| 1ZCH-CA-1 | CA | Ca²⁺ | E1N1 | ASN.GLU. | ASN.GLU.HOH. | ✔ | 2 | 4 | 2 | ✔ |
| 1ZCH-CA-2 | CA | Ca²⁺ | E1N1 | ASN.GLU. | ASN.GLU.HOH. | ✔ | 2 | 4 | 2 | ✘ |
| 6TVR-CA-2 | CA | Ca²⁺ | E1N1 | ASN.GLU. | ASN.GLU.HOH.NAG. | ✔ | 2 | 5 | 2 | ✘ |