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.

Chart is currently loading

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
198939166
199040206
199146252
199256308
1993184492
1994373865
19953071,172
19963421,514
19974962,010
19986252,635
19997933,428
20009114,339
20019595,298
200210126,310
200314427,752
200419969,748
2005226412,012
2006249714,509
2007275617,265
2008258019,845
2009265622,501
2010265225,153
2011241627,569
2012255830,127
2013274332,870
2014327036,140
2015280138,941
2016306442,005
2017329945,304
2018317948,483
2019354152,024
2020420756,231
2021360359,834
2022436664,200
2023438468,584
2024441172,995
2025276175,756