PDB Statistics: PDB Data Distribution by Molecular Weight (Entity)

Molecular weight is calculated for each chemically distinct component of a PDB structure, e.g. protein, nucleic acid.

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Molecular Weight (Daltons)Number of Entities
< 5K36,144
5K - 10K37,458
10K - 15K60,603
15K - 20K46,273
20K - 25K46,204
25K - 30K37,754
30K - 35K27,023
35K - 40K24,253
40K - 45K17,890
45K - 50K13,178
50K - 55K10,527
55K - 60K7,744
60K - 65K5,531
65K - 70K3,920
70K - 75K2,785
>= 75K21,374