PDB Statistics: Growth in Number of Unique Protein Sequences in Released PDB Structures (Cumulative) at Identity 30%

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
19761111
19771122
1978325
1979126
1980228
1981634
19821650
1983454
1984963
1985568
1986775
1987782
19881597
198923120
199026146
199132178
199241219
1993124343
1994251594
1995205799
19962381,037
19973351,372
19983911,763
19995302,293
20006312,924
20016243,548
20026524,200
20038605,060
200412706,330
200512787,608
200614409,048
2007158110,629
2008151412,143
2009151213,655
2010146415,119
2011126116,380
2012138717,767
2013142719,194
2014169720,891
2015151322,404
2016164724,051
2017177125,822
2018178427,606
2019186029,466
2020226031,726
2021183233,558
2022229235,850
2023223038,080
202485238,932