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
19963971,753
19975502,303
19987273,030
19999143,944
200010244,968
200110586,026
200211177,143
200315968,739
2004218910,928
2005246113,389
2006276916,158
2007313719,295
2008289722,192
2009299225,184
2010301228,196
2011282431,020
2012296633,986
2013324137,227
2014396541,192
2015334444,536
2016377048,306
2017414352,449
2018391356,362
2019433760,699
2020524065,939
2021480070,739
2022568576,424
2023555381,977
202489182,868