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
1993376858
19947101,568
19955222,090
19965832,673
19978043,477
199811674,644
199913586,002
200014987,500
200115779,077
2002164010,717
2003229613,013
2004305216,065
2005324019,305
2006377523,080
2007436727,447
2008406531,512
2009427335,785
2010445740,242
2011437044,612
2012465049,262
2013520654,468
2014598260,450
2015531665,766
2016605471,820
2017624278,062
2018614284,204
2019695191,155
2020800099,155
20217421106,576
20228765115,341
20238515123,856
20244057127,913