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
19947111,570
19955222,092
19965852,677
19978053,482
199811664,648
199913596,007
200014987,505
200115769,081
2002163910,720
2003229313,013
2004305216,065
2005323919,304
2006377623,080
2007436727,447
2008406731,514
2009427635,790
2010446440,254
2011437344,627
2012463849,265
2013515554,420
2014605060,470
2015527865,748
2016606071,808
2017630778,115
2018613284,247
2019691691,163
2020812899,291
20217515106,806
20228873115,679
20238525124,204
20241316125,520