PDB Statistics: Number of Unique Protein Sequence Clusters within Released PDB Structures (Annual) at identity 95%

This chart shows the total number of unique protein sequence clusters in PDB structures released within each year. Unique sequence clusters are defined using the sequence identity (SI). A value of 95% SI is used by default, since for practical purposes this identifies proteins with few differences, and thus can be considered to be the same sequence. The chart can also be redrawn with a more stringent 100% SI criterion, or with lower SI values that identify unique protein families (70% SI) or unique protein folds (30% SI).
The annual numbers of protein sequences may be displayed by specific levels of SI, either separately in different charts or simultaneously in the same chart.

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Sequence cluster level:

YearNumber of Unique Protein Sequence Clusters within Released PDB Structures (Annual)
197613
197715
19783
19797
19808
198111
198223
198319
198414
198518
198615
198717
198835
198958
199075
199186
199299
1993325
1994659
1995556
1996635
1997910
19981212
19991546
20001680
20011806
20021978
20032664
20043366
20053706
20064188
20074687
20084590
20094779
20104881
20114783
20125117
20135544
20146750
20156341
20166923
20177679
20187665
20198434
20209756
20217192