| PDB release date | 2021-11-24 |
| Number of PDB entries | 163810 |
| Number of biological assemblies | 250125 |
| Number of proteins | 605236 |
| Number of peptides | 17919 |
| Number of nucleic acids | 14231 |
| Number of SCOPe domains | 188370 |
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| Number of protein-protein interaction interfaces | 647799 |
| Clusters at sequence similarity > 95% | 72244 |
| Clusters at sequence similarity > 95% and interface residue contacts similarity > 50% | 114358 |
| Clusters at sequence similarity > 40% | 45572 |
| Clusters at sequence similarity > 40% and interface residue contacts similarity > 50% | 90043 |
| Clusters at sequence similarity > 40% and interface area similarity > 50% | 71730 |
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| Number of domain-domain interaction interfaces | 198414 |
| Clusters at sequence similarity > 95% | 22501 |
| Clusters at sequence similarity > 95% and interface residue contacts similarity > 50% | 36494 |
| Clusters at sequence similarity > 40% | 13657 |
| Clusters at sequence similarity > 40% and interface residue contacts similarity > 50% | 27392 |
| Clusters at sequence similarity > 40% and interface area similarity > 50% | 23057 |
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| Number of all binding sites | 1420130 |
| Clusters at sequence similarity > 95% | 55499 |
| Clusters at sequence similarity > 95% and residue interface areas similarity > 50% | 174895 |
| Clusters at sequence similarity > 40% | 31688 |
| Clusters at sequence similarity > 40% and residue interface areas similarity > 50% | 126656 |
| Clusters at sequence similarity > 40% and binding site area similarity > 50% | 104665 |
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| Number of protein-protein binding sites | 1295598 |
| Clusters at sequence similarity > 95% | 53825 |
| Clusters at sequence similarity > 95% and residue interface areas similarity > 50% | 161635 |
| Clusters at sequence similarity > 40% | 30696 |
| Clusters at sequence similarity > 40% and residue interface areas similarity > 50% | 116846 |
| Clusters at sequence similarity > 40% and binding site area similarity > 50% | 97073 |
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| Number of protein-peptide binding sites | 22663 |
| Clusters at sequence similarity > 95% | 3458 |
| Clusters at sequence similarity > 95% and residue interface areas similarity > 50% | 4671 |
| Clusters at sequence similarity > 40% | 2069 |
| Clusters at sequence similarity > 40% and residue interface areas similarity > 50% | 3629 |
| Clusters at sequence similarity > 40% and binding site area similarity > 50% | 3027 |
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| Number of protein-nucleic acid binding sites | 101869 |
| Clusters at sequence similarity > 95% | 6115 |
| Clusters at sequence similarity > 95% and residue interface areas similarity > 50% | 9180 |
| Clusters at sequence similarity > 40% | 3858 |
| Clusters at sequence similarity > 40% and residue interface areas similarity > 50% | 6871 |
| Clusters at sequence similarity > 40% and binding site area similarity > 50% | 5661 |
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| Number of domain-domain binding sites | 396756 |
| Clusters at sequence similarity > 95% | 18915 |
| Clusters at sequence similarity > 95% and residue interface areas similarity > 50% | 51912 |
| Clusters at sequence similarity > 40% | 10740 |
| Clusters at sequence similarity > 40% and residue interface areas similarity > 50% | 36315 |
| Clusters at sequence similarity > 40% and binding site area similarity > 50% | 31499 |
