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
199043223
199149272
199265337
1993216553
1994434987
19953461,333
19963841,717
19975512,268
19987323,000
19999173,917
200010254,942
200110726,014
200211347,148
200315968,744
2004220210,946
2005249613,442
2006281516,257
2007317919,436
2008291222,348
2009303125,379
2010304228,421
2011286531,286
2012299934,285
2013323837,523
2014402441,547
2015336044,907
2016377048,677
2017415652,833
2018388056,713
2019427460,987
2020521966,206
2021456470,770
2022514975,919