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
1995554
1996634
1997909
19981204
19991545
20001677
20011805
20021977
20032659
20043366
20053702
20064188
20074682
20084589
20094774
20104883
20114788
20125119
20135548
20146749
20156337
20166925
20177674
20187671
20198431
20209763
20214845