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
< 5K38,831
5K - 10K41,931
10K - 15K68,382
15K - 20K52,308
20K - 25K52,019
25K - 30K41,486
30K - 35K30,159
35K - 40K26,656
40K - 45K19,758
45K - 50K14,787
50K - 55K12,055
55K - 60K8,927
60K - 65K6,216
65K - 70K4,512
70K - 75K3,179
>= 75K25,450