| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 4KNS-CU-1 | CU | Cu²⁺ | H3 | HIS. | HIS. | ✔ | 3 | 3 | 2 | ✔ |
| 4KNS-CU-2 | CU | Cu²⁺ | H3 | HIS. | HIS. | ✔ | 3 | 3 | 2 | ✘ |
| 4KNS-CU-3 | CU | Cu²⁺ | H3 | HIS. | HIS. | ✔ | 3 | 3 | 2 | ✘ |
| 4NB7-CU-1 | CU | Cu²⁺ | H2 | HIS. | AZI.HIS. | ✔ | 2 | 3 | 2 | ✘ |
| 4NB7-CU-2 | CU | Cu²⁺ | H2 | HIS. | AZI.HIS. | ✔ | 2 | 3 | 2 | ✘ |
| 4NB7-CU-3 | CU | Cu²⁺ | H2 | HIS. | AZI.HIS. | ✔ | 2 | 3 | 2 | ✘ |
| 4MNT-CU-1 | CU | Cu²⁺ | C2 | CYS. | CYS. | ✔ | 2 | 2 | 2 | ✘ |
| 4N12-CU-1 | CU | Cu²⁺ | C2 | CYS. | CYS. | ✔ | 2 | 2 | 2 | ✔ |
| 4N8U-CU-1 | CU | Cu²⁺ | H3 | HIS. | HIS. | ✔ | 3 | 3 | 2 | ✘ |
| 4N8U-CU-2 | CU | Cu²⁺ | H3 | HIS. | HIS. | ✔ | 3 | 3 | 2 | ✘ |
| 4N8U-CU-3 | CU | Cu²⁺ | H3 | HIS. | HIS. | ✔ | 3 | 3 | 2 | ✘ |
| 4N8U-CU-4 | CU | Cu²⁺ | H3 | HIS. | HIS. | ✔ | 3 | 3 | 2 | ✘ |
| 4M3H-CU-1 | CU | Cu²⁺ | H3 | HIS. | HIS. | ✔ | 3 | 3 | 2 | ✔ |
| 4M3H-CU-2 | CU | Cu²⁺ | H3 | HIS. | HIS. | ✔ | 3 | 3 | 2 | ✘ |
| 4M3H-CU-3 | CU | Cu²⁺ | H3 | HIS. | HIS. | ✔ | 3 | 3 | 2 | ✘ |
| 3FSV-CU-1 | CU | Cu²⁺ | M2 | MET. | MET. | ✔ | 2 | 2 | 2 | ✔ |
| 3X1F-CU-1 | CU | Cu²⁺ | M3 | MET. | MET. | ✔ | 3 | 3 | 3 | ✔ |
| 3SB8-CU-1 | CU | Cu²⁺ | G1H1Q1 | GLN.GLY.HIS. | GLN.GLY.HIS. | ✔ | 3 | 3 | 2 | ✔ |
| 3SES-CU-1 | CU | Cu²⁺ | E1H1 | GLU.HIS. | GLU.HIS.HOH. | ✔ | 2 | 4 | 2 | ✔ |
| 3SES-CU-2 | CU | Cu²⁺ | E1H1 | GLU.HIS. | GLU.HIS.HOH. | ✔ | 2 | 4 | 2 | ✘ |