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.

Chart is currently loading

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
19944461,010
19953461,356
19963911,747
19975512,298
19987303,028
19999143,942
200010244,966
200110606,026
200211187,144
200315958,739
2004219010,929
2005246313,392
2006276916,161
2007313719,298
2008289622,194
2009299125,185
2010301328,198
2011282031,018
2012296933,987
2013325137,238
2014397041,208
2015334544,553
2016378348,336
2017416352,499
2018393956,438
2019432060,758
2020533666,094
2021488770,981
2022580376,784
2023556882,352
2024576288,114
2025352391,637