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
199255308
1993183491
1994377868
19953071,175
19963431,518
19974972,015
19986202,635
19997883,423
20009084,331
20019605,291
200210126,303
200314437,746
200419919,737
2005226111,998
2006249714,495
2007274717,242
2008258119,823
2009265822,481
2010265025,131
2011241927,550
2012256130,111
2013274532,856
2014325836,114
2015279838,912
2016305641,968
2017327545,243
2018315848,401
2019359051,991
2020415356,144
2021357059,714
2022440164,115
2023342367,538