| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1NSD-CA-1 | CA | Ca²⁺ | E4 | GLU. | GLU.HOH. | ✔ | 4 | 5 | 4 | ✘ |
| 1NSC-CA-1 | CA | Ca²⁺ | E4 | GLU. | GLU.HOH. | ✔ | 4 | 5 | 4 | ✔ |
| 1NSB-CA-1 | CA | Ca²⁺ | E4 | GLU. | GLU.HOH. | ✔ | 4 | 5 | 4 | ✘ |
| 6CX8-MN-1 | MN | Mn²⁺ | E4 | GLU. | GLU. | ✔ | 4 | 4 | 2 | ✘ |
| 6CX8-MN-2 | MN | Mn²⁺ | E4 | GLU. | GLU. | ✔ | 4 | 4 | 2 | ✘ |
| 6CX8-MN-3 | MN | Mn²⁺ | E4 | GLU. | GLU. | ✔ | 4 | 4 | 2 | ✘ |
| 6CX8-MN-4 | MN | Mn²⁺ | E4 | GLU. | GLU. | ✔ | 4 | 4 | 2 | ✘ |
| 6CX8-MN-5 | MN | Mn²⁺ | E4 | GLU. | GLU. | ✔ | 4 | 4 | 2 | ✘ |
| 6CX8-MN-6 | MN | Mn²⁺ | E4 | GLU. | GLU. | ✔ | 4 | 4 | 2 | ✘ |
| 1M4Z-MN-1 | MN | Mn²⁺ | E4 | GLU. | GLU. | ✔ | 4 | 4 | 4 | ✔ |
| 3MPS-FE-5 | FE | Fe³⁺ | E4 | GLU. | GLU.HOH. | ✔ | 4 | 5 | 2 | ✘ |
| 3MPS-FE-7 | FE | Fe³⁺ | E4 | GLU. | GLU. | ✔ | 4 | 4 | 2 | ✘ |
| 4D5V-CO-1 | CO | Co²⁺ | E4 | GLU. | GLU.HOH. | ✔ | 4 | 5 | 2 | ✘ |
| 4D5O-CO-1 | CO | Co²⁺ | E4 | GLU. | GLU. | ✔ | 4 | 4 | 2 | ✘ |
| 4D5Q-CO-1 | CO | Co²⁺ | E4 | GLU. | GLU. | ✔ | 4 | 4 | 2 | ✘ |
| 4D5I-CO-1 | CO | Co²⁺ | E4 | GLU. | GLU. | ✔ | 4 | 4 | 2 | ✔ |
| 4D5J-CO-1 | CO | Co²⁺ | E4 | GLU. | GLU. | ✔ | 4 | 4 | 2 | ✘ |
| 2E0M-CD-1 | CD | Cd²⁺ | E4 | GLU. | GLU. | ✔ | 4 | 4 | 4 | ✘ |
| 2E0L-CD-1 | CD | Cd²⁺ | E4 | GLU. | GLU. | ✔ | 4 | 4 | 4 | ✔ |
| 8B1N-MG-1 | MG | Mg²⁺ | E4 | GLU. | GLU.HOH. | ✔ | 4 | 6 | 2 | ✔ |