PDB Statistics: Growth in Number of Unique Protein Sequences in Released PDB Structures (Cumulative) at Identity 70%

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
19771124
1978327
1979229
1980332
1981739
19821857
1983865
19841176
19851086
1986995
198710105
198822127
198940167
199040207
199146253
199256309
1993184493
1994373866
19953071,173
19963421,515
19974982,013
19986242,637
19997933,430
20009114,341
20019585,299
200210126,311
200314407,751
200419959,746
2005226112,007
2006249714,504
2007275917,263
2008258119,844
2009265722,501
2010265425,155
2011242127,576
2012255830,134
2013275032,884
2014326836,152
2015280738,959
2016304542,004
2017329945,303
2018316548,468
2019353452,002
2020414256,144
2021361659,760
2022450864,268
2023433368,601
2024428972,890
202574773,637