PDB Statistics: Number of Unique Protein Sequence Clusters within Released PDB Structures (Annual) at identity 70%

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
19795
19808
198110
198223
198316
198414
198518
198615
198717
198834
198953
199073
199183
199294
1993279
1994574
1995505
1996585
1997843
19981071
19991400
20001545
20011673
20021837
20032489
20043155
20053485
20063944
20074354
20084267
20094421
20104512
20114399
20124655
20134954
20145931
20155522
20166054
20176578
20186633
20197187
20208169
20215713