PDB Statistics: PDB Data Distribution by Atom Count

Distribution of released structures by the number of observed atoms excluding atoms in water molecules.

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Atom Count RangeNumber of Entries
< 100020,075
1000 - 200034,590
2000 - 300040,514
3000 - 400030,835
4000 - 500021,538
5000 - 600015,432
6000 - 700013,156
7000 - 800010,529
8000 - 90008,570
9000 - 100006,284
10000 - 110005,250
11000 - 120004,444
12000 - 130003,796
13000 - 140003,235
14000 - 150002,830
15000 - 160002,301
16000 - 170002,090
17000 - 180001,797
18000 - 190001,442
>= 1900021,154