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 - 20K27726
20K - 40K37579
40K - 60K27259
60K - 80K16570
80K - 100K11503
100K - 120K8346
120K - 140K5303
140K - 160K3898
160K - 180K3303
180K - 200K2423
200K - 220K1861
220K - 240K1551
240K - 260K1047
260K - 280K876
280K - 300K682
300K - 320K563
320K - 340K531
340K - 360K473
360K - 380K414
> 380K5622