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
< 20K28639
20K - 40K39338
40K - 60K28980
60K - 80K17529
80K - 100K12230
100K - 120K8795
120K - 140K5665
140K - 160K4213
160K - 180K3524
180K - 200K2586
200K - 220K2018
220K - 240K1660
240K - 260K1161
260K - 280K940
280K - 300K761
300K - 320K617
320K - 340K587
340K - 360K537
360K - 380K457
>= 380K6064