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
19955222,090
19965852,675
19978063,481
199811684,649
199913636,012
200015007,512
200115789,090
2002163810,728
2003229313,021
2004305416,075
2005324719,322
2006377823,100
2007436927,469
2008406931,538
2009427335,811
2010446640,277
2011436444,641
2012455449,195
2013518754,382
2014594560,327
2015528165,608
2016606871,676
2017632678,002
2018621484,216
2019692691,142
2020815199,293
20217428106,721
20228848115,569
20238585124,154
20248850133,004
20253835136,839