PDB Statistics: Growth in Number of Unique Protein Sequences in Released PDB Structures (Cumulative) at Identity 100%

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
19771427
1978330
1979636
1980440
19811050
19821969
19831483
19841295
198510105
19869114
198710124
198842166
198948214
199077291
1991103394
199288482
1993377859
19947091,568
19955232,091
19965842,675
19978053,480
199811674,647
199913586,005
200014967,501
200115779,078
2002163910,717
2003229513,012
2004305016,062
2005324219,304
2006377723,081
2007436427,445
2008406831,513
2009427235,785
2010446440,249
2011437644,625
2012477749,402
2013510854,510
2014600460,514
2015529465,808
2016597171,779
2017641978,198
2018613884,336
2019692591,261
2020796199,222
20217499106,721
20228809115,530
20233744119,274