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
19831382
19841294
198512106
19869115
198710125
198843168
198949217
199080297
1991108405
1992104509
1993406915
19947511,666
19955542,220
19965972,817
19978593,676
199812324,908
199914246,332
200015867,918
200116609,578
2002166511,243
2003234613,589
2004310316,692
2005330019,992
2006385123,843
2007439928,242
2008411432,356
2009422936,585
2010443241,017
2011432845,345
2012467250,017
2013515655,173
2014604361,216
2015528166,497
2016595472,451
2017628578,736
2018606084,796
2019695891,754
2020792299,676
20217347107,023
20227886114,909