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
< 5K44,865
5K - 10K53,615
10K - 15K87,598
15K - 20K67,538
20K - 25K65,134
25K - 30K50,905
30K - 35K36,926
35K - 40K32,538
40K - 45K24,296
45K - 50K18,822
50K - 55K15,397
55K - 60K11,578
60K - 65K7,910
65K - 70K6,053
70K - 75K4,265
>= 75K36,554