| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 5UM9-SM-1 | SM | Sm³⁺ | D2T1 | ASP.DT. | ASP.DT.HOH. | ✘ | 3 | 5 | 2 | ✔ |
| 1EXZ-CA-1 | CA | Ca²⁺ | E1S1 | GLU.SER. | GLU.HOH.SER. | ✔ | 2 | 4 | 2 | ✔ |
| 1DT6-SM-1 | SM | Sm³⁺ | E4 | GLU. | GLU. | ✔ | 4 | 4 | 2 | ✔ |
| 1DT6-SM-2 | SM | Sm³⁺ | E4 | GLU. | GLU. | ✔ | 4 | 4 | 2 | ✔ |
| 5K97-SM-1 | SM | Sm³⁺ | D1E1T1 | ASP.DT.GLU. | ASP.DT.GLU.HOH. | ✘ | 3 | 4 | 2 | ✔ |
| 5K97-SM-2 | SM | Sm³⁺ | D2E1T1 | ASP.DT.GLU. | GLU.HOH. | ✘ | 4 | 3 | 2 | ✔ |
| 5K97-SM-3 | SM | Sm³⁺ | E1T1 | DT.GLU. | ASP.DT.GLU. | ✘ | 2 | 4 | 2 | ✔ |
| 3PZA-FE-1 | FE | Fe²⁺ | E3 | GLU. | GLU.PEO. | ✔ | 3 | 4 | 2 | ✔ |
| 3QVD-FE-1 | FE | Fe²⁺ | E3 | GLU. | GLU. | ✔ | 3 | 3 | 2 | ✔ |
| 3QVD-FE-2 | FE | Fe²⁺ | E3 | GLU. | GLU. | ✔ | 3 | 3 | 2 | ✔ |
| 2XGF-FE-1 | FE | Fe²⁺ | H6 | HIS. | HIS. | ✔ | 6 | 6 | 3 | ✔ |
| 2XGF-FE-2 | FE | Fe²⁺ | H6 | HIS. | HIS. | ✔ | 6 | 6 | 3 | ✘ |
| 2XGF-FE-3 | FE | Fe²⁺ | H6 | HIS. | HIS. | ✔ | 6 | 6 | 3 | ✘ |
| 2XGF-FE-4 | FE | Fe²⁺ | H6 | HIS. | HIS. | ✔ | 6 | 6 | 3 | ✘ |
| 2XGF-FE-5 | FE | Fe²⁺ | H6 | HIS. | HIS. | ✔ | 6 | 6 | 3 | ✘ |
| 2XGF-FE-6 | FE | Fe²⁺ | H6 | HIS. | HIS. | ✔ | 6 | 6 | 3 | ✘ |
| 2XGF-FE-7 | FE | Fe²⁺ | H6 | HIS. | HIS. | ✔ | 6 | 6 | 3 | ✘ |
| 4CI0-ZN-1 | ZN | Zn²⁺ | C4 | CYS. | CYS. | ✔ | 4 | 4 | 2 | ✔ |
| 4CI0-ZN-2 | ZN | Zn²⁺ | C4 | CYS. | CYS. | ✔ | 4 | 4 | 2 | ✘ |
| 4CI0-ZN-3 | ZN | Zn²⁺ | C4 | CYS. | CYS. | ✔ | 4 | 4 | 2 | ✔ |