| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 3IS8-K-6 | K | K⁺ | Q4 | GLN. | GLN. | ✔ | 4 | 4 | 4 | ✘ |
| 3AQJ-CA-1 | CA | Ca²⁺ | D3S3 | ASP.SER. | ASP.SER. | ✔ | 6 | 6 | 3 | ✘ |
| 1VZI-CA-1 | CA | Ca²⁺ | C2T2 | CYS.THR. | CYS.HOH.THR. | ✔ | 4 | 6 | 2 | ✔ |
| 1WA6-FE-1 | FE | Fe²⁺ | D1E1 | ASP.GLU. | ASP.GLU.PO4. | ✔ | 2 | 3 | 2 | ✔ |
| 3EN1-FE-1 | FE | Fe²⁺ | H3 | HIS. | HIS. | ✔ | 3 | 3 | 3 | ✔ |
| 3EQQ-FE-1 | FE | Fe²⁺ | H3 | HIS. | HIS. | ✔ | 3 | 3 | 3 | ✘ |
| 6EX0-FE-1 | FE | Fe²⁺ | E2 | GLU. | GLU.HOH. | ✔ | 2 | 6 | 2 | ✔ |
| 6EX0-FE-2 | FE | Fe²⁺ | E2 | GLU. | GLU.HOH. | ✔ | 2 | 6 | 2 | ✘ |
| 4ZTT-FE-1 | FE | Fe²⁺ | E4 | GLU. | GLU. | ✔ | 4 | 4 | 4 | ✔ |
| 5D8Y-K-1 | K | K⁺ | Q4 | GLN. | GLN. | ✔ | 4 | 4 | 4 | ✘ |
| 5D8Y-K-2 | K | K⁺ | N1Q4 | ASN.GLN. | ASN.GLN. | ✔ | 5 | 5 | 4 | ✘ |
| 5D8Y-K-3 | K | K⁺ | N1Q4 | ASN.GLN. | ASN.GLN. | ✔ | 5 | 5 | 4 | ✘ |
| 5D8Y-K-4 | K | K⁺ | N2Q4 | ASN.GLN. | ASN.GLN. | ✔ | 6 | 6 | 4 | ✘ |
| 5D8Y-K-5 | K | K⁺ | N1Q4 | ASN.GLN. | ASN.GLN. | ✔ | 5 | 5 | 4 | ✘ |
| 5D8Y-K-6 | K | K⁺ | N1Q4 | ASN.GLN. | ASN.GLN. | ✔ | 5 | 5 | 4 | ✘ |
| 5D8P-K-1 | K | K⁺ | N4Q4 | ASN.GLN. | ASN.GLN. | ✔ | 8 | 8 | 4 | ✘ |
| 5D8P-K-2 | K | K⁺ | N4Q4 | ASN.GLN. | ASN.GLN. | ✔ | 8 | 8 | 4 | ✘ |
| 5D8P-K-3 | K | K⁺ | N3Q4 | ASN.GLN. | ASN.GLN. | ✔ | 7 | 7 | 4 | ✘ |
| 5D8P-K-4 | K | K⁺ | N3Q4 | ASN.GLN. | ASN.GLN. | ✔ | 7 | 7 | 4 | ✘ |
| 5D8P-K-5 | K | K⁺ | N4Q4 | ASN.GLN. | ASN.GLN. | ✔ | 8 | 8 | 4 | ✘ |