PDB Statistics: Growth in Number of Unique Protein Sequences in Released PDB Structures (Cumulative) at Identity 95%

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
19771427
1978330
1979636
1980339
1981948
19821866
19831076
19841187
19851097
19869106
198710116
198824140
198945185
199047232
199155287
199266353
1993238591
19944851,076
19953721,448
19964161,864
19975782,442
19987683,210
19999664,176
200010795,255
200111126,367
200211807,547
200316739,220
2004228111,501
2005254214,043
2006288516,928
2007327420,202
2008303823,240
2009316226,402
2010316529,567
2011298332,550
2012315935,709
2013346739,176
2014424743,423
2015357646,999
2016399750,996
2017454955,545
2018422359,768
2019477064,538
2020571570,253
2021522875,481
2022630281,783
2023610287,885
202498788,872