| PDB release date | 2021-04-07 |
| Number of PDB entries | 154705 |
| Number of biological assemblies | 238177 |
| Number of proteins | 546952 |
| Number of peptides | 16841 |
| Number of nucleic acids | 12658 |
| Number of SCOPe domains | 188184 |
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| Number of protein-protein interaction interfaces | 557670 |
| Clusters at sequence similarity > 95% | 64570 |
| Clusters at sequence similarity > 95% and interface residue contacts similarity > 50% | 101308 |
| Clusters at sequence similarity > 40% | 41272 |
| Clusters at sequence similarity > 40% and interface residue contacts similarity > 50% | 79787 |
| Clusters at sequence similarity > 40% and interface area similarity > 50% | 65189 |
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| Number of domain-domain interaction interfaces | 198159 |
| Clusters at sequence similarity > 95% | 22478 |
| Clusters at sequence similarity > 95% and interface residue contacts similarity > 50% | 36455 |
| Clusters at sequence similarity > 40% | 13638 |
| Clusters at sequence similarity > 40% and interface residue contacts similarity > 50% | 27352 |
| Clusters at sequence similarity > 40% and interface area similarity > 50% | 23036 |
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| Number of all binding sites | 1220381 |
| Clusters at sequence similarity > 95% | 51605 |
| Clusters at sequence similarity > 95% and residue interface areas similarity > 50% | 154146 |
| Clusters at sequence similarity > 40% | 29863 |
| Clusters at sequence similarity > 40% and residue interface areas similarity > 50% | 113059 |
| Clusters at sequence similarity > 40% and binding site area similarity > 50% | 94972 |
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| Number of protein-protein binding sites | 1115340 |
| Clusters at sequence similarity > 95% | 50040 |
| Clusters at sequence similarity > 95% and residue interface areas similarity > 50% | 142886 |
| Clusters at sequence similarity > 40% | 28910 |
| Clusters at sequence similarity > 40% and residue interface areas similarity > 50% | 104615 |
| Clusters at sequence similarity > 40% and binding site area similarity > 50% | 88289 |
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| Number of protein-peptide binding sites | 21222 |
| Clusters at sequence similarity > 95% | 3248 |
| Clusters at sequence similarity > 95% and residue interface areas similarity > 50% | 4375 |
| Clusters at sequence similarity > 40% | 1955 |
| Clusters at sequence similarity > 40% and residue interface areas similarity > 50% | 3423 |
| Clusters at sequence similarity > 40% and binding site area similarity > 50% | 2870 |
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| Number of protein-nucleic acid binding sites | 83819 |
| Clusters at sequence similarity > 95% | 5115 |
| Clusters at sequence similarity > 95% and residue interface areas similarity > 50% | 7396 |
| Clusters at sequence similarity > 40% | 3372 |
| Clusters at sequence similarity > 40% and residue interface areas similarity > 50% | 5623 |
| Clusters at sequence similarity > 40% and binding site area similarity > 50% | 4766 |
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| Number of domain-domain binding sites | 396247 |
| Clusters at sequence similarity > 95% | 18901 |
| Clusters at sequence similarity > 95% and residue interface areas similarity > 50% | 51863 |
| Clusters at sequence similarity > 40% | 10731 |
| Clusters at sequence similarity > 40% and residue interface areas similarity > 50% | 36290 |
| Clusters at sequence similarity > 40% and binding site area similarity > 50% | 31486 |
