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
1985669
1986776
1987783
19881497
198923120
199026146
199132178
199241219
1993124343
1994251594
1995205799
19962381,037
19973351,372
19983911,763
19995302,293
20006322,925
20016243,549
20026534,202
20038605,062
200412706,332
200512787,610
200614409,050
2007158010,630
2008151312,143
2009151213,655
2010146215,117
2011126116,378
2012138717,765
2013142919,194
2014169820,892
2015151322,405
2016165024,055
2017177225,827
2018178527,612
2019186029,472
2020226131,733
2021183533,568
2022229235,860
2023222938,089
202477138,860