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
19978043,479
199811674,646
199913586,004
200014987,502
200115779,079
2002164010,719
2003229313,012
2004305116,063
2005324119,304
2006377923,083
2007436127,444
2008406831,512
2009427335,785
2010446040,245
2011437444,619
2012474149,360
2013513954,499
2014598560,484
2015530865,792
2016599371,785
2017635178,136
2018618584,321
2019696491,285
2020796299,247
20217475106,722
20228741115,463
20233544119,007