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
1993376858
19947101,568
19955212,089
19965852,674
19978063,480
199811684,648
199913636,011
200015027,513
200115789,091
2002163910,730
2003229313,023
2004305416,077
2005324719,324
2006378123,105
2007436627,471
2008406731,538
2009427235,810
2010446840,278
2011436444,642
2012466049,302
2013516854,470
2014602160,491
2015532665,817
2016604071,857
2017636378,220
2018624284,462
2019694591,407
2020803499,441
20217490106,931
20228741115,672
20238720124,392
20249157133,549
20255262138,811