| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1U5Q-CA-1 | CA | Ca²⁺ | E1N1X1 | ASN.GLU.SEP. | ASN.GLU.SEP. | ✔ | 3 | 3 | 2 | ✔ |
| 1U5Q-CA-2 | CA | Ca²⁺ | E1N1X1 | ASN.GLU.SEP. | ASN.GLU.SEP. | ✔ | 3 | 3 | 2 | ✘ |
| 6TVD-CA-2 | CA | Ca²⁺ | E1N1X1 | ASN.GLU.NAG. | ASN.GLU.NAG. | ✘ | 3 | 3 | 3 | ✔ |
| 6TVF-CA-1 | CA | Ca²⁺ | E1N1X1 | ASN.GLU.NAG. | ASN.GLU.NAG. | ✘ | 3 | 3 | 3 | ✔ |