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
< 20K29788
20K - 40K42045
40K - 60K30780
60K - 80K18763
80K - 100K13069
100K - 120K9385
120K - 140K6215
140K - 160K4661
160K - 180K3863
180K - 200K2806
200K - 220K2201
220K - 240K1834
240K - 260K1335
260K - 280K1076
280K - 300K859
300K - 320K715
320K - 340K678
340K - 360K620
360K - 380K535
>= 380K7519