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
< 20K30029
20K - 40K42371
40K - 60K31018
60K - 80K18924
80K - 100K13170
100K - 120K9458
120K - 140K6262
140K - 160K4701
160K - 180K3908
180K - 200K2840
200K - 220K2233
220K - 240K1855
240K - 260K1362
260K - 280K1157
280K - 300K872
300K - 320K731
320K - 340K687
340K - 360K626
360K - 380K543
>= 380K7672