PDB Statistics: Growth in Number of Unique Protein Sequences in Released PDB Structures (Cumulative) at Identity 30%

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
19761111
19771122
1978325
1979126
1980228
1981735
19821651
1983455
1984964
1985670
1986777
1987784
19881498
198923121
199026147
199132179
199241220
1993124344
1994251595
1995205800
19962381,038
19973351,373
19983911,764
19995292,293
20006312,924
20016243,548
20026534,201
20038605,061
200412696,330
200512777,607
200614409,047
2007158010,627
2008151312,140
2009151213,652
2010146515,117
2011125916,376
2012138817,764
2013142919,193
2014170120,894
2015151222,406
2016164924,055
2017176825,823
2018178527,608
2019186129,469
2020226431,733
2021183133,564
2022229535,859
2023222638,085
202495039,035