| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 3AH7-NA-1 | NA | Na⁺ | E1H1N1 | ASN.GLU.HIS. | ASN.GLU.HIS.HOH. | ✔ | 3 | 6 | 2 | ✔ |
| 3AH7-NA-2 | NA | Na⁺ | E1H1N1 | ASN.GLU.HIS. | ASN.GLU.HIS.HOH. | ✔ | 3 | 6 | 2 | ✔ |