PDB Statistics: Growth in Number of Unique Protein Sequences in Released PDB Structures (Cumulative) at Identity 90%

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.

Chart is currently loading

Sequence cluster level:

YearNumber of New Protein SequencesTotal Number of Protein Sequences
19761313
19771225
1978328
1979533
1980336
1981844
19821862
19831072
19841183
19851093
19869102
198710112
198823135
198945180
199044224
199151275
199264339
1993224563
19944451,008
19953481,356
19963971,753
19975502,303
19987283,031
19999143,945
200010234,968
200110586,026
200211177,143
200315948,737
2004218910,926
2005245913,385
2006276716,152
2007313919,291
2008289522,186
2009299125,177
2010301028,187
2011282331,010
2012296633,976
2013324637,222
2014396841,190
2015334644,536
2016376548,301
2017416152,462
2018384956,311
2019435660,667
2020517165,838
2021481770,655
2022572576,380
2023562082,000
2024161983,619