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
1981735
19821651
1983455
1984964
1985670
1986777
1987784
19881498
198923121
199026147
199132179
199241220
1993124344
1994251595
1995205800
19962371,037
19973371,374
19983911,765
19995282,293
20006312,924
20016263,550
20026524,202
20038635,065
200412726,337
200512777,614
200614389,052
2007158110,633
2008151512,148
2009151113,659
2010146315,122
2011125916,381
2012138717,768
2013142819,196
2014169920,895
2015151422,409
2016165024,059
2017177025,829
2018178527,614
2019186029,474
2020226431,738
2021183533,573
2022229335,866
2023222038,086
2024116239,248