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 - 20K27318
20K - 40K36894
40K - 60K26698
60K - 80K16227
80K - 100K11305
100K - 120K8101
120K - 140K5159
140K - 160K3768
160K - 180K3216
180K - 200K2337
200K - 220K1793
220K - 240K1491
240K - 260K1014
260K - 280K841
280K - 300K655
300K - 320K533
320K - 340K509
340K - 360K449
360K - 380K382
> 380K5325