PDB Statistics: Growth in Number of Unique Protein Sequences in Released PDB Structures (Cumulative) at Identity 100%

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
1980440
19811050
19821969
19831382
19841294
198512106
19869115
198710125
198843168
198949217
199080297
1991108405
1992104509
1993406915
19947511,666
19955542,220
19965972,817
19978593,676
199812304,906
199914256,331
200015847,915
200116589,573
2002166611,239
2003234513,584
2004310216,686
2005329919,985
2006384823,833
2007439028,223
2008411532,338
2009423336,571
2010443141,002
2011432545,327
2012460549,932
2013516155,093
2014608361,176
2015523266,408
2016600372,411
2017619278,603
2018609884,701
2019681891,519
2020784299,361
20217384106,745
20228692115,437
20231858117,295