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.

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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
19963931,749
19975502,299
19987283,027
19999143,941
200010244,965
200110586,023
200211177,140
200315978,737
2004219210,929
2005245913,388
2006276716,155
2007313619,291
2008289322,184
2009299225,176
2010301128,187
2011282231,009
2012296533,974
2013324537,219
2014396841,187
2015334844,535
2016376448,299
2017421052,509
2018392556,434
2019433660,770
2020522565,995
2021481470,809
2022575276,561
2023555782,118
2024238484,502