PDB Statistics: Growth in Number of Unique Protein Sequences in Released PDB Structures (Cumulative) at Identity 30%

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
19761111
19771122
1978325
1979126
1980228
1981634
19821650
1983454
1984963
1985568
1986775
1987782
19881496
198923119
199026145
199132177
199241218
1993124342
1994251593
1995205798
19962381,036
19973351,371
19983921,763
19995302,293
20006322,925
20016243,549
20026534,202
20038615,063
200412696,332
200512787,610
200614399,049
2007158010,629
2008151412,143
2009151213,655
2010146415,119
2011126016,379
2012138917,768
2013142819,196
2014169820,894
2015151622,410
2016164924,059
2017176525,824
2018178427,608
2019186029,468
2020226931,737
2021183533,572
2022229435,866
2023223038,096
202456238,658