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
0 - 20K25754
20K - 40K33577
40K - 60K24317
60K - 80K14759
80K - 100K10189
100K - 120K7368
120K - 140K4619
140K - 160K3382
160K - 180K2799
180K - 200K2055
200K - 220K1514
220K - 240K1328
240K - 260K908
260K - 280K700
280K - 300K548
300K - 320K467
320K - 340K415
340K - 360K404
360K - 380K319
> 380K4295