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.

Chart is currently loading

Sequence cluster level:

YearNumber of New Protein SequencesTotal Number of Protein Sequences
19761111
19771122
1978325
1979126
1980228
1981634
19821650
1983454
1984963
1985669
1986776
1987783
19881497
198923120
199026146
199132178
199241219
1993124343
1994252595
1995205800
19962381,038
19973361,374
19983921,766
19995302,296
20006322,928
20016243,552
20026534,205
20038615,066
200412676,333
200512787,611
200614449,055
2007158010,635
2008151012,145
2009151113,656
2010146515,121
2011126116,382
2012138817,770
2013142619,196
2014170020,896
2015151422,410
2016164624,056
2017176725,823
2018178527,608
2019185929,467
2020226131,728
2021183833,566
2022229535,861
2023214238,003