PDB Statistics: Growth in Number of Unique Protein Sequences in Released PDB Structures (Cumulative) at Identity 95%

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
19771326
1978329
1979635
1980338
19811048
19821866
19831177
19841188
19851098
19869107
198710117
198823140
198946186
199047233
199151284
199265349
1993229578
19944661044
19953681412
19963981810
19975712381
19987723153
19999764129
200010705199
200111186317
200211817498
200316759173
2004229011463
2005257014033
2006291316946
2007329020236
2008305023286
2009316726453
2010319429647
2011302032667
2012315735824
2013347139295
2014429143586
2015360847194
2016412251316
2017447555791
2018423460025
2019480264827
2020567770504
2021514875652
2022303478686