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
1994375868
19953071,175
19963431,518
19974982,016
19986222,638
19997903,428
20009084,336
20019605,296
200210116,307
200314437,750
200419929,742
2005226112,003
2006249914,502
2007275717,259
2008258119,840
2009265722,497
2010265125,148
2011241727,565
2012256030,125
2013274732,872
2014326136,133
2015279938,932
2016305241,984
2017329845,282
2018316548,447
2019352951,976
2020410056,076
2021355759,633
2022442264,055
2023432468,379
2024186070,239