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 - 20K25868
20K - 40K33763
40K - 60K24484
60K - 80K14848
80K - 100K10269
100K - 120K7406
120K - 140K4633
140K - 160K3408
160K - 180K2840
180K - 200K2080
200K - 220K1533
220K - 240K1337
240K - 260K916
260K - 280K706
280K - 300K552
300K - 320K471
320K - 340K421
340K - 360K405
360K - 380K320
> 380K4331