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
1994376869
19953071,176
19963441,520
19974972,017
19986202,637
19997913,428
20009074,335
20019595,294
200210116,305
200314437,748
200419909,738
2005226412,002
2006249914,501
2007275517,256
2008258219,838
2009265922,497
2010265025,147
2011242227,569
2012256330,132
2013274832,880
2014326036,140
2015279738,937
2016305341,990
2017329345,283
2018315948,442
2019354851,990
2020418356,173
2021350159,674
2022445164,125
2023437868,503
202450269,005