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
1985771
1986778
1987785
198815100
198924124
199026150
199132182
199241223
1993122345
1994254599
1995205804
19962371,041
19973361,377
19983921,769
19995342,303
20006312,934
20016233,557
20026524,209
20038625,071
200412656,336
200512757,611
200614459,056
2007158410,640
2008151012,150
2009151113,661
2010146715,128
2011126316,391
2012138517,776
2013142319,199
2014170520,904
2015151222,416
2016164824,064
2017176825,832
2018178627,618
2019186229,480
2020226731,747
2021184333,590
2022229835,888
202397236,860