| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 2FL0-FE-1 | FE | Fe²⁺ | N4Q1 | ASN.GLN. | ASN.GLN.HOH. | ✔ | 5 | 6 | 4 | ✘ |
| 2FL0-FE-2 | FE | Fe²⁺ | N4Q1 | ASN.GLN. | ASN.GLN.HOH. | ✔ | 5 | 6 | 4 | ✘ |
| 2FL0-FE-3 | FE | Fe²⁺ | N4Q1 | ASN.GLN. | ASN.GLN.HOH. | ✔ | 5 | 6 | 4 | ✘ |