| PDB release date | 2021-09-08 |
| Number of PDB entries | 161585 |
| Number of biological assemblies | 247044 |
| Number of proteins | 593072 |
| Number of peptides | 17699 |
| Number of nucleic acids | 13903 |
| Number of SCOPe domains | 188370 |
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| Number of protein-protein interaction interfaces | 629506 |
| Clusters at sequence similarity > 95% | 70857 |
| Clusters at sequence similarity > 95% and interface residue contacts similarity > 50% | 111768 |
| Clusters at sequence similarity > 40% | 44759 |
| Clusters at sequence similarity > 40% and interface residue contacts similarity > 50% | 87953 |
| Clusters at sequence similarity > 40% and interface area similarity > 50% | 70371 |
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| Number of domain-domain interaction interfaces | 198415 |
| Clusters at sequence similarity > 95% | 22501 |
| Clusters at sequence similarity > 95% and interface residue contacts similarity > 50% | 36495 |
| Clusters at sequence similarity > 40% | 13657 |
| Clusters at sequence similarity > 40% and interface residue contacts similarity > 50% | 27393 |
| Clusters at sequence similarity > 40% and interface area similarity > 50% | 23057 |
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| Number of all binding sites | 1380502 |
| Clusters at sequence similarity > 95% | 54798 |
| Clusters at sequence similarity > 95% and residue interface areas similarity > 50% | 170555 |
| Clusters at sequence similarity > 40% | 31353 |
| Clusters at sequence similarity > 40% and residue interface areas similarity > 50% | 123306 |
| Clusters at sequence similarity > 40% and binding site area similarity > 50% | 102142 |
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| Number of protein-protein binding sites | 1259012 |
| Clusters at sequence similarity > 95% | 53141 |
| Clusters at sequence similarity > 95% and residue interface areas similarity > 50% | 157610 |
| Clusters at sequence similarity > 40% | 30369 |
| Clusters at sequence similarity > 40% and residue interface areas similarity > 50% | 113766 |
| Clusters at sequence similarity > 40% and binding site area similarity > 50% | 94737 |
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| Number of protein-peptide binding sites | 22330 |
| Clusters at sequence similarity > 95% | 3408 |
| Clusters at sequence similarity > 95% and residue interface areas similarity > 50% | 4605 |
| Clusters at sequence similarity > 40% | 2039 |
| Clusters at sequence similarity > 40% and residue interface areas similarity > 50% | 3578 |
| Clusters at sequence similarity > 40% and binding site area similarity > 50% | 2984 |
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| Number of protein-nucleic acid binding sites | 99160 |
| Clusters at sequence similarity > 95% | 6031 |
| Clusters at sequence similarity > 95% and residue interface areas similarity > 50% | 8922 |
| Clusters at sequence similarity > 40% | 3793 |
| Clusters at sequence similarity > 40% and residue interface areas similarity > 50% | 6639 |
| Clusters at sequence similarity > 40% and binding site area similarity > 50% | 5495 |
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| Number of domain-domain binding sites | 396758 |
| Clusters at sequence similarity > 95% | 18915 |
| Clusters at sequence similarity > 95% and residue interface areas similarity > 50% | 51913 |
| Clusters at sequence similarity > 40% | 10740 |
| Clusters at sequence similarity > 40% and residue interface areas similarity > 50% | 36316 |
| Clusters at sequence similarity > 40% and binding site area similarity > 50% | 31499 |
