PDB Statistics: Growth in Number of Unique Protein Sequences in Released PDB Structures (Cumulative) at Identity 95%

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
19771326
1978329
1979635
1980338
1981947
19821865
19831176
19841187
19851097
19869106
198710116
198823139
198946185
199047232
199151283
199265348
1993229577
19944721,049
19953701,419
19964021,821
19975742,395
19987803,175
19999744,149
200010715,220
200111186,338
200211857,523
200316769,199
2004229311,492
2005257114,063
2006291316,976
2007329320,269
2008305323,322
2009316426,486
2010320129,687
2011302032,707
2012316635,873
2013346839,341
2014429443,635
2015360547,240
2016399451,234
2017452855,762
2018424860,010
2019470464,714
2020574270,456
2021519675,652
2022582981,481