PDB Statistics: PDB Data Distribution by Molecular Weight (Structure)

All macromolecules, small molecules, and ions are included, except for water molecules. Molecular weight is calculated for all atoms, including those not observed in the experiment. Molecular weight of all non-water atoms in the asymmetric unit.

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Molecular Weight (Daltons)Number of Entries
< 20K29427
20K - 40K41272
40K - 60K30270
60K - 80K18359
80K - 100K12793
100K - 120K9239
120K - 140K6048
140K - 160K4493
160K - 180K3760
180K - 200K2760
200K - 220K2151
220K - 240K1782
240K - 260K1261
260K - 280K1031
280K - 300K833
300K - 320K694
320K - 340K643
340K - 360K597
360K - 380K509
>= 380K7072