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.

Molecular Weight (Daltons)Number of Entries
0 - 20K25421
20K - 40K33027
40K - 60K23800
60K - 80K14478
80K - 100K9983
100K - 120K7221
120K - 140K4559
140K - 160K3288
160K - 180K2732
180K - 200K2011
200K - 220K1478
220K - 240K1287
240K - 260K885
260K - 280K678
280K - 300K535
300K - 320K444
320K - 340K396
340K - 360K397
360K - 380K304
> 380K4119