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
< 20K28857
20K - 40K39870
40K - 60K29386
60K - 80K17773
80K - 100K12408
100K - 120K8923
120K - 140K5755
140K - 160K4283
160K - 180K3597
180K - 200K2633
200K - 220K2045
220K - 240K1691
240K - 260K1191
260K - 280K968
280K - 300K787
300K - 320K639
320K - 340K606
340K - 360K549
360K - 380K477
>= 380K6451