| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 4QB6-CA-1 | CA | Ca²⁺ | E1F1N1X1 | ASN.GCU.GLU.PHE. | ASN.GCU.GLU.HOH.PHE. | ✘ | 4 | 6 | 2 | ✔ |