| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 7LRB-CO-1 | CO | Co²⁺ | H5 | HIS. | HIS. | ✔ | 5 | 5 | 2 | ✘ |
| 7LRR-CO-1 | CO | Co²⁺ | H5 | HIS. | HIS. | ✔ | 5 | 5 | 2 | ✘ |
| 7LRR-CO-2 | CO | Co²⁺ | H5 | HIS. | HIS. | ✔ | 5 | 5 | 2 | ✘ |
| 7MK4-CO-1 | CO | Co²⁺ | H5 | HIS. | HIS. | ✔ | 5 | 5 | 2 | ✔ |