PDB Statistics: Growth in Number of Unique Protein Sequences in Released PDB Structures (Cumulative) at Identity 100%

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
1980440
19811050
19821969
19831483
19841295
198510105
19869114
198710124
198842166
198948214
199077291
1991103394
199288482
1993377859
19947111,570
19955232,093
19965852,678
19978043,482
199811654,647
199913576,004
200014987,502
200115779,079
2002163710,716
2003229313,009
2004305316,062
2005324119,303
2006377823,081
2007436627,447
2008407231,519
2009427435,793
2010446640,259
2011437544,634
2012465249,286
2013512354,409
2014603760,446
2015530865,754
2016616271,916
2017629778,213
2018616584,378
2019677891,156
2020808899,244
20217544106,788
20228779115,567
20238055123,622