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
19987793,174
19999734,147
200010695,216
200111176,333
200211857,518
200316769,194
2004229111,485
2005257114,056
2006291116,967
2007329320,260
2008305323,313
2009316326,476
2010320129,677
2011302032,697
2012316835,865
2013346239,327
2014429543,622
2015360747,229
2016391151,140
2017454655,686
2018424159,927
2019474064,667
2020565670,323
2021515275,475
2022623381,708
202341582,123