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
1994375868
19953071,175
19963441,519
19974982,017
19986212,638
19997913,429
20009074,336
20019615,297
200210116,308
200314427,750
200419909,740
2005226312,003
2006250014,503
2007275417,257
2008258019,837
2009265722,494
2010265425,148
2011241827,566
2012256330,129
2013275132,880
2014325536,135
2015279738,932
2016305641,988
2017329245,280
2018316248,442
2019344251,884
2020418356,067
2021357559,642
2022440764,049
2023435368,402
2024122469,626