| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 6H2B-CA-118 | CA | Ca²⁺ | D2Q1 | ASP.GLN. | ASP.GLN. | ✔ | 3 | 3 | 2 | ✘ |
| 6H2B-CA-119 | CA | Ca²⁺ | D2Q1 | ASP.GLN. | ASP.GLN. | ✔ | 3 | 3 | 2 | ✘ |
| 6H2B-CA-120 | CA | Ca²⁺ | D2Q1 | ASP.GLN. | ASP.GLN. | ✔ | 3 | 3 | 2 | ✘ |