PDB Statistics: PDB Data Distribution by Residue Count

Distribution of released structures by the number of residues in macromolecules. All residues specified in macromolecular chains (i.e. full sequence) are counted even if not all of them are observed in the structure.

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Residue Count Range	Number of Entries
< 100	15,373
100 - 200	28,670
200 - 300	29,805
300 - 400	32,099
400 - 500	20,520
500 - 600	16,974
600 - 700	13,715
700 - 800	10,284
800 - 900	9,961
900 - 1000	7,509
1000 - 1100	6,067
1100 - 1200	4,994
1200 - 1300	4,723
1300 - 1400	4,442
1400 - 1500	4,049
1500 - 1600	3,448
1600 - 1700	2,633
1700 - 1800	2,344
1800 - 1900	2,263
>= 1900	33,609

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