PDB Statistics: Number of Unique Protein Sequence Clusters within Released PDB Structures (Annual) at identity 30%

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)
197611
197714
19783
19794
19808
198110
198221
198314
198413
198516
198614
198717
198828
198946
199063
199175
199286
1993243
1994471
1995433
1996505
1997710
1998895
19991184
20001332
20011448
20021609
20032132
20042710
20052888
20063317
20073639
20083648
20093737
20103826
20113740
20123905
20134082
20144735
20154532
20164965
20175308
20185465
20195853
20206639
20214780