| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 5UBO-CA-1 | CA | Ca²⁺ | A1D1E1G1 | ALA.ASP.GLU.GLY. | ALA.ASP.GLU.GLY.HOH. | ✘ | 4 | 6 | 2 | ✘ |
| 5UG4-CA-1 | CA | Ca²⁺ | E3 | GLU. | GLU.HOH. | ✔ | 3 | 4 | 2 | ✔ |
| 5UG4-CA-2 | CA | Ca²⁺ | E3 | GLU. | GLU.HOH. | ✔ | 3 | 4 | 2 | ✘ |
| 5UG4-CA-3 | CA | Ca²⁺ | E3 | GLU. | GLU.HOH. | ✔ | 3 | 4 | 2 | ✘ |
| 5UG4-CA-4 | CA | Ca²⁺ | E3 | GLU. | GLU.HOH. | ✔ | 3 | 4 | 2 | ✘ |
| 5UG4-CA-5 | CA | Ca²⁺ | E2N1P1 | ASN.GLU.PRO. | ASN.GLU.HOH.PRO. | ✔ | 4 | 6 | 2 | ✘ |
| 5UG4-CA-6 | CA | Ca²⁺ | E2N1P1 | ASN.GLU.PRO. | ASN.GLU.HOH.PRO. | ✔ | 4 | 6 | 2 | ✘ |
| 5UG4-CA-7 | CA | Ca²⁺ | E2N1P1 | ASN.GLU.PRO. | ASN.GLU.HOH.PRO. | ✔ | 4 | 6 | 2 | ✘ |
| 5UG4-CA-8 | CA | Ca²⁺ | E2N1P1 | ASN.GLU.PRO. | ASN.GLU.HOH.PRO. | ✔ | 4 | 6 | 2 | ✘ |
| 5UG4-CA-9 | CA | Ca²⁺ | E4 | GLU. | GLU.HOH. | ✔ | 4 | 6 | 2 | ✘ |
| 5UG4-CA-10 | CA | Ca²⁺ | E4 | GLU. | GLU.HOH. | ✔ | 4 | 6 | 2 | ✘ |
| 5UG4-CA-11 | CA | Ca²⁺ | E2N1P1 | ASN.GLU.PRO. | ASN.GLU.HOH.PRO. | ✔ | 4 | 6 | 2 | ✔ |
| 5UG4-CA-12 | CA | Ca²⁺ | E2N1P1 | ASN.GLU.PRO. | ASN.GLU.HOH.PRO. | ✔ | 4 | 6 | 2 | ✘ |
| 5UG4-CA-13 | CA | Ca²⁺ | E2N1P1 | ASN.GLU.PRO. | ASN.GLU.HOH.PRO. | ✔ | 4 | 6 | 2 | ✘ |
| 5UG4-CA-14 | CA | Ca²⁺ | E2N1P1 | ASN.GLU.PRO. | ASN.GLU.HOH.PRO. | ✔ | 4 | 6 | 2 | ✘ |
| 5UG4-CA-15 | CA | Ca²⁺ | E4 | GLU. | GLU.HOH. | ✔ | 4 | 6 | 2 | ✘ |
| 5UG4-CA-16 | CA | Ca²⁺ | E4 | GLU. | GLU.HOH. | ✔ | 4 | 6 | 2 | ✘ |
| 5UG4-CA-17 | CA | Ca²⁺ | E4 | GLU. | GLU.HOH. | ✔ | 4 | 6 | 2 | ✘ |
| 5UG4-CA-18 | CA | Ca²⁺ | E4 | GLU. | GLU.HOH. | ✔ | 4 | 6 | 2 | ✘ |
| 5UG4-CA-19 | CA | Ca²⁺ | E3 | GLU. | GLU.HOH. | ✔ | 3 | 5 | 2 | ✘ |