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
< 20K29094
20K - 40K40471
40K - 60K29907
60K - 80K18066
80K - 100K12604
100K - 120K9073
120K - 140K5922
140K - 160K4372
160K - 180K3690
180K - 200K2701
200K - 220K2097
220K - 240K1727
240K - 260K1220
260K - 280K987
280K - 300K803
300K - 320K674
320K - 340K627
340K - 360K571
360K - 380K492
>= 380K6818