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 - 20K27923
20K - 40K37995
40K - 60K27599
60K - 80K16847
80K - 100K11672
100K - 120K8455
120K - 140K5392
140K - 160K3973
160K - 180K3358
180K - 200K2467
200K - 220K1904
220K - 240K1584
240K - 260K1075
260K - 280K893
280K - 300K695
300K - 320K576
320K - 340K544
340K - 360K492
360K - 380K422
> 380K5804