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
19965852,675
19978063,481
199811684,649
199913616,010
200015027,512
200115789,090
2002163910,729
2003229513,024
2004305416,078
2005324719,325
2006378023,105
2007436627,471
2008406931,540
2009426735,807
2010446140,268
2011437344,641
2012464349,284
2013513854,422
2014608860,510
2015531865,828
2016599271,820
2017637078,190
2018620484,394
2019696391,357
2020816699,523
20217515107,038
20228892115,930
20238563124,493
20248725133,218
2025873134,091