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.

Chart is currently loading

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
19947111,569
19955222,091
19965842,675
19978053,480
199811664,646
199913596,005
200014987,503
200115789,081
2002163910,720
2003229313,013
2004305216,065
2005324119,306
2006377623,082
2007436627,448
2008406731,515
2009427535,790
2010445840,248
2011437944,627
2012472449,351
2013523154,582
2014602460,606
2015527765,883
2016594471,827
2017628878,115
2018618884,303
2019687491,177
2020805199,228
20217460106,688
20228710115,398
20238641124,039
20242475126,514