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
19965842,674
19978063,480
199811674,647
199913606,007
200014997,506
200115779,083
2002163810,721
2003229413,015
2004305316,068
2005324219,310
2006377623,086
2007437027,456
2008406931,525
2009427435,799
2010446340,262
2011437044,632
2012454949,181
2013522554,406
2014600160,407
2015528265,689
2016608671,775
2017632378,098
2018607884,176
2019697791,153
2020808499,237
20217440106,677
20228911115,588
20238592124,180
20248077132,257