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
0 - 20K25632
20K - 40K33347
40K - 60K24128
60K - 80K14637
80K - 100K10117
100K - 120K7324
120K - 140K4592
140K - 160K3351
160K - 180K2769
180K - 200K2034
200K - 220K1503
220K - 240K1316
240K - 260K898
260K - 280K688
280K - 300K543
300K - 320K457
320K - 340K408
340K - 360K402
360K - 380K312
> 380K4220