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
1993224563
19944451,008
19953481,356
19963931,749
19975502,299
19987283,027
19999143,941
200010244,965
200110586,023
200211177,140
200315978,737
2004219210,929
2005246013,389
2006276916,158
2007313719,295
2008289422,189
2009299425,183
2010300828,191
2011282631,017
2012296633,983
2013324637,229
2014397241,201
2015334344,544
2016376648,310
2017419352,503
2018385356,356
2019427560,631
2020521765,848
2021482570,673
2022583576,508
2023561082,118
2024250384,621