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 - 20K27105
20K - 40K36500
40K - 60K26305
60K - 80K16031
80K - 100K11169
100K - 120K8003
120K - 140K5079
140K - 160K3719
160K - 180K3146
180K - 200K2308
200K - 220K1753
220K - 240K1455
240K - 260K1004
260K - 280K816
280K - 300K641
300K - 320K527
320K - 340K495
340K - 360K439
360K - 380K371
> 380K5089