PDB Statistics: Number of Unique Protein Sequence Clusters within Released PDB Structures (Annual) at identity 90%

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
198110
198223
198319
198414
198518
198615
198717
198835
198956
199075
199185
199299
1993314
1994636
1995542
1996623
1997896
19981174
19991510
20001643
20011776
20021934
20032608
20043310
20053652
20064110
20074616
20084498
20094666
20104775
20114666
20124979
20135363
20146522
20156104
20166656
20177350
20187344
20198069
20209287
20216676