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
200211807,545
200316749,219
2004228111,500
2005254114,041
2006288716,928
2007327320,201
2008303723,238
2009315926,397
2010316829,565
2011298632,551
2012316135,712
2013346839,180
2014424543,425
2015357547,000
2016420351,203
2017449155,694
2018428259,976
2019469064,666
2020567270,338
2021522775,565
2022633581,900
2023613088,030
2024228990,319