PDB Statistics: Number of Unique Protein Sequence Clusters within Released PDB Structures (Annual) at identity 100%

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
198415
198518
198615
198717
198850
198958
1990103
1991137
1992125
1993481
1994896
1995701
1996779
19971130
19981557
19991899
20002049
20012192
20022330
20033143
20043991
20054247
20064930
20075559
20085384
20095618
20105836
20115790
20126284
20136871
20148141
20157659
20168489
20179122
20189305
201910239
202011728
20218492