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 - 20K27633
20K - 40K37468
40K - 60K27111
60K - 80K16500
80K - 100K11455
100K - 120K8303
120K - 140K5272
140K - 160K3872
160K - 180K3278
180K - 200K2405
200K - 220K1847
220K - 240K1539
240K - 260K1035
260K - 280K869
280K - 300K682
300K - 320K559
320K - 340K523
340K - 360K462
360K - 380K397
> 380K5557