PDB Statistics: Growth in Number of Unique Protein Sequences in Released PDB Structures (Cumulative) at Identity 90%

This chart shows the annual and cumulative numbers of protein sequences in released PDB structures. The chart can be viewed for a few different levels of sequence identity since the beginning of the PDB archive. The cumulative bars represent the growth in unique protein sequences (number of polymeric entities) across history. The yearly bars (dark blue) tell how many new protein sequences were added in a certain year.

Note: The total number of sequence clusters in the statistics table is linked to the sequence cluster group search result page. There is a default precision threshold in calculating the numbers for performance balance. So the statistics count may have a slight discrepancy compared to the actual non-redundant group search result when the result count approaches or goes above 10,000. The group search result page provides an accurate count. The statistics page provides the trend.

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Sequence cluster level:

YearNumber of New Protein SequencesTotal Number of Protein Sequences
19761313
19771225
1978328
1979533
1980336
1981844
19821862
19831072
19841183
19851093
19869102
198710112
198823135
198945180
199044224
199151275
199264339
1993225564
19944451,009
19953461,355
19963911,746
19975502,296
19987293,025
19999143,939
200010254,964
200110596,023
200211177,140
200315958,735
2004219010,925
2005246013,385
2006276816,153
2007313619,289
2008289422,183
2009299025,173
2010301328,186
2011282331,009
2012296433,973
2013324437,217
2014397241,189
2015334044,529
2016376448,293
2017410652,399
2018387656,275
2019427560,550
2020520965,759
2021487170,630
2022581176,441
2023556782,008
2024559287,600