| PDB release date | 2021-05-19 |
| Number of PDB entries | 155955 |
| Number of biological assemblies | 239963 |
| Number of proteins | 553715 |
| Number of peptides | 16994 |
| Number of nucleic acids | 12795 |
| Number of SCOPe domains | 188184 |
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| Number of protein-protein interaction interfaces | 568164 |
| Clusters at sequence similarity > 95% | 66094 |
| Clusters at sequence similarity > 95% and interface residue contacts similarity > 50% | 103494 |
| Clusters at sequence similarity > 40% | 41995 |
| Clusters at sequence similarity > 40% and interface residue contacts similarity > 50% | 81316 |
| Clusters at sequence similarity > 40% and interface area similarity > 50% | 66211 |
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| Number of domain-domain interaction interfaces | 198123 |
| Clusters at sequence similarity > 95% | 22473 |
| Clusters at sequence similarity > 95% and interface residue contacts similarity > 50% | 36449 |
| Clusters at sequence similarity > 40% | 13634 |
| Clusters at sequence similarity > 40% and interface residue contacts similarity > 50% | 27346 |
| Clusters at sequence similarity > 40% and interface area similarity > 50% | 23032 |
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| Number of all binding sites | 1243345 |
| Clusters at sequence similarity > 95% | 52313 |
| Clusters at sequence similarity > 95% and residue interface areas similarity > 50% | 158264 |
| Clusters at sequence similarity > 40% | 30117 |
| Clusters at sequence similarity > 40% and residue interface areas similarity > 50% | 115941 |
| Clusters at sequence similarity > 40% and binding site area similarity > 50% | 97271 |
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| Number of protein-protein binding sites | 1136328 |
| Clusters at sequence similarity > 95% | 50715 |
| Clusters at sequence similarity > 95% and residue interface areas similarity > 50% | 146567 |
| Clusters at sequence similarity > 40% | 29161 |
| Clusters at sequence similarity > 40% and residue interface areas similarity > 50% | 107284 |
| Clusters at sequence similarity > 40% and binding site area similarity > 50% | 90423 |
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| Number of protein-peptide binding sites | 21444 |
| Clusters at sequence similarity > 95% | 3279 |
| Clusters at sequence similarity > 95% and residue interface areas similarity > 50% | 4420 |
| Clusters at sequence similarity > 40% | 1975 |
| Clusters at sequence similarity > 40% and residue interface areas similarity > 50% | 3461 |
| Clusters at sequence similarity > 40% and binding site area similarity > 50% | 2900 |
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| Number of protein-nucleic acid binding sites | 85573 |
| Clusters at sequence similarity > 95% | 5415 |
| Clusters at sequence similarity > 95% and residue interface areas similarity > 50% | 7795 |
| Clusters at sequence similarity > 40% | 3451 |
| Clusters at sequence similarity > 40% and residue interface areas similarity > 50% | 5808 |
| Clusters at sequence similarity > 40% and binding site area similarity > 50% | 4914 |
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| Number of domain-domain binding sites | 396175 |
| Clusters at sequence similarity > 95% | 18898 |
| Clusters at sequence similarity > 95% and residue interface areas similarity > 50% | 51853 |
| Clusters at sequence similarity > 40% | 10729 |
| Clusters at sequence similarity > 40% and residue interface areas similarity > 50% | 36282 |
| Clusters at sequence similarity > 40% and binding site area similarity > 50% | 31479 |
