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
19771427
1978330
1979636
1980339
1981948
19821866
19831076
19841187
19851097
19869106
198710116
198824140
198945185
199047232
199155287
199266353
1993238591
19944851,076
19953721,448
19964161,864
19975762,440
19987683,208
19999664,174
200010795,253
200111126,365
200211817,546
200316749,220
2004228411,504
2005253914,043
2006288416,927
2007327220,199
2008303923,238
2009316026,398
2010316729,565
2011298332,548
2012316235,710
2013346839,178
2014425343,431
2015357847,009
2016425451,263
2017447855,741
2018426960,010
2019478964,799
2020564570,444
2021527475,718
2022635182,069
2023617388,242
2024277191,013