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
200015857,917
200116609,577
2002166511,242
2003234513,587
2004310416,691
2005330319,994
2006385123,845
2007439828,243
2008411732,360
2009423436,594
2010443241,026
2011433245,358
2012468650,044
2013508755,131
2014602861,159
2015530466,463
2016598472,447
2017622578,672
2018613284,804
2019680391,607
2020798699,593
20217344106,937
20228103115,040