| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 7AZ1-CA-1 | CA | Ca²⁺ | E1K1Q1 | GLN.GLU.LYS. | GLN.GLU.HOH.LYS. | ✔ | 3 | 4 | 2 | ✘ |
| 7AZ1-CA-2 | CA | Ca²⁺ | E1K1Q1 | GLN.GLU.LYS. | GLN.GLU.HOH.LYS. | ✔ | 3 | 4 | 2 | ✘ |