PDB Statistics: Growth in Number of Unique Protein Sequences in Released PDB Structures (Cumulative) at Identity 70%

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
19771124
1978327
1979229
1980332
1981739
19821857
1983865
19841176
19851086
1986995
198710105
198822127
198940167
199040207
199146253
199256309
1993184493
1994373866
19953071,173
19963421,515
19974982,013
19986242,637
19997933,430
20009114,341
20019585,299
200210126,311
200314407,751
200419949,745
2005226112,006
2006250014,506
2007275817,264
2008258119,845
2009265722,502
2010265325,155
2011242027,575
2012256030,135
2013275132,886
2014327036,156
2015280538,961
2016304742,008
2017329745,305
2018316348,468
2019347851,946
2020406356,009
2021360259,611
2022440564,016
2023438668,402
2024432272,724
2025110873,832