| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 2CFV-NI-4 | NI | Ni²⁺ | H3K1 | HIS.LYS. | HIS.LYS. | ✔ | 4 | 4 | 2 | ✘ |
| 3INC-NI-1 | NI | Ni²⁺ | H3 | HIS. | HIS. | ✔ | 3 | 3 | 3 | ✘ |
| 3INC-NI-2 | NI | Ni²⁺ | H3 | HIS. | HIS. | ✔ | 3 | 3 | 3 | ✘ |
| 5KB1-ZN-1 | ZN | Zn²⁺ | H3 | HIS. | HIS. | ✔ | 3 | 3 | 3 | ✔ |
| 7TCS-K-1 | K | K⁺ | E1G1N1 | ASN.GLU.GLY. | ASN.GLU.GLY.HOH. | ✔ | 3 | 5 | 2 | ✔ |
| 7TCS-K-2 | K | K⁺ | E1G1N1 | ASN.GLU.GLY. | ASN.GLU.GLY.HOH. | ✔ | 3 | 5 | 2 | ✘ |
| 7TCS-K-3 | K | K⁺ | E1G1N1 | ASN.GLU.GLY. | ASN.GLU.GLY.HOH. | ✔ | 3 | 5 | 2 | ✘ |
| 7TCS-K-4 | K | K⁺ | E1G1N1 | ASN.GLU.GLY. | ASN.GLU.GLY.HOH. | ✔ | 3 | 5 | 2 | ✘ |
| 6IZ0-CA-1 | CA | Ca²⁺ | G3 | GLY. | GLY.HOH. | ✔ | 3 | 7 | 3 | ✔ |
| 7RF0-MG-1 | MG | Mg²⁺ | A1V1 | ALA.VAL. | ALA.VAL. | ✔ | 2 | 2 | 2 | ✔ |
| 7PGI-NA-1 | NA | Na⁺ | Y2 | TYR. | TYR. | ✔ | 2 | 2 | 2 | ✔ |
| 7OYN-ZN-1 | ZN | Zn²⁺ | H3X1 | 65T.HIS. | 65T.HIS. | ✘ | 4 | 4 | 2 | ✔ |
| 7OYM-ZN-1 | ZN | Zn²⁺ | H3X1 | 65T.HIS. | 65T.HIS. | ✘ | 4 | 4 | 2 | ✔ |
| 7OYR-ZN-1 | ZN | Zn²⁺ | H3X1 | 65T.HIS. | 65T.HIS. | ✘ | 4 | 4 | 2 | ✔ |
| 7OYQ-ZN-1 | ZN | Zn²⁺ | H3X1 | 65T.HIS. | 65T.HIS. | ✘ | 4 | 4 | 2 | ✔ |
| 7XEE-NA-1 | NA | Na⁺ | S3 | SER. | HOH.SER. | ✔ | 3 | 5 | 2 | ✘ |
| 7XEE-NA-2 | NA | Na⁺ | A3I1N1 | ALA.ASN.ILE. | ALA.ASN.HOH.ILE. | ✔ | 5 | 6 | 2 | ✔ |
| 7XEE-NA-3 | NA | Na⁺ | A3I1N1 | ALA.ASN.ILE. | ALA.ASN.HOH.ILE. | ✔ | 5 | 6 | 2 | ✘ |
| 7XEF-NA-1 | NA | Na⁺ | S3 | SER. | HOH.SER. | ✔ | 3 | 6 | 2 | ✔ |
| 7XEF-NA-2 | NA | Na⁺ | A3I1N1 | ALA.ASN.ILE. | ALA.ASN.HOH.ILE. | ✔ | 5 | 6 | 2 | ✔ |