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.

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Molecular Weight (Daltons)Number of Entries
< 20K28581
20K - 40K39291
40K - 60K28914
60K - 80K17488
80K - 100K12222
100K - 120K8766
120K - 140K5652
140K - 160K4203
160K - 180K3521
180K - 200K2578
200K - 220K2012
220K - 240K1660
240K - 260K1160
260K - 280K937
280K - 300K759
300K - 320K614
320K - 340K581
340K - 360K536
360K - 380K452
>= 380K6030