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 - 20K26351
20K - 40K35107
40K - 60K25187
60K - 80K15305
80K - 100K10589
100K - 120K7668
120K - 140K4792
140K - 160K3517
160K - 180K2965
180K - 200K2165
200K - 220K1611
220K - 240K1385
240K - 260K955
260K - 280K752
280K - 300K565
300K - 320K495
320K - 340K432
340K - 360K421
360K - 380K342
> 380K4615