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
199187
199299
1993326
1994658
1995556
1996635
1997910
19981205
19991545
20001677
20011806
20021977
20032666
20043369
20053704
20064195
20074685
20084591
20094776
20104883
20114787
20125118
20135548
20146753
20156340
20166926
20177683
20187663
20198433
20209759
20217055