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
< 5K40,850
5K - 10K45,780
10K - 15K74,545
15K - 20K57,302
20K - 25K56,220
25K - 30K44,466
30K - 35K32,206
35K - 40K28,784
40K - 45K21,273
45K - 50K15,978
50K - 55K13,185
55K - 60K9,714
60K - 65K6,752
65K - 70K5,020
70K - 75K3,553
>= 75K28,845