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
< 20K33,773
20K - 40K49,236
40K - 60K36,158
60K - 80K22,981
80K - 100K15,762
100K - 120K11,380
120K - 140K7,768
140K - 160K6,466
160K - 180K5,206
180K - 200K3,785
200K - 220K3,185
220K - 240K2,538
240K - 260K1,981
260K - 280K1,718
280K - 300K1,381
300K - 320K1,120
320K - 340K1,038
340K - 360K1,032
360K - 380K860
>= 380K13,104