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 - 20K27125
20K - 40K36548
40K - 60K26333
60K - 80K16057
80K - 100K11182
100K - 120K8011
120K - 140K5087
140K - 160K3723
160K - 180K3149
180K - 200K2312
200K - 220K1757
220K - 240K1457
240K - 260K1005
260K - 280K819
280K - 300K643
300K - 320K527
320K - 340K497
340K - 360K440
360K - 380K372
> 380K5107