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
1994374867
19953071,174
19963421,516
19974952,011
19986242,635
19997933,428
20009094,337
20019595,296
200210136,309
200314427,751
200419949,745
2005226212,007
2006250114,508
2007275817,266
2008258219,848
2009265622,504
2010265325,157
2011241827,575
2012255730,132
2013275032,882
2014327136,153
2015279638,949
2016305342,002
2017330045,302
2018317248,474
2019341551,889
2020417556,064
2021353359,597
2022441764,014
2023439668,410
2024429272,702