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 - 20K26562
20K - 40K35477
40K - 60K25451
60K - 80K15540
80K - 100K10746
100K - 120K7754
120K - 140K4884
140K - 160K3568
160K - 180K3011
180K - 200K2200
200K - 220K1656
220K - 240K1397
240K - 260K968
260K - 280K777
280K - 300K594
300K - 320K503
320K - 340K441
340K - 360K425
360K - 380K353
> 380K4766