PDB Statistics: 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.

Chart is currently loading
Molecular Weight (Daltons)Number of Entries
< 20K33,425
20K - 40K48,538
40K - 60K35,694
60K - 80K22,514
80K - 100K15,529
100K - 120K11,189
120K - 140K7,586
140K - 160K6,257
160K - 180K5,055
180K - 200K3,681
200K - 220K3,072
220K - 240K2,455
240K - 260K1,904
260K - 280K1,640
280K - 300K1,317
300K - 320K1,057
320K - 340K995
340K - 360K991
360K - 380K823
>= 380K12,503