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	15,374
100 - 200	28,682
200 - 300	29,816
300 - 400	32,116
400 - 500	20,594
500 - 600	17,013
600 - 700	13,719
700 - 800	10,293
800 - 900	9,970
900 - 1000	7,519
1000 - 1100	6,069
1100 - 1200	5,005
1200 - 1300	4,734
1300 - 1400	4,446
1400 - 1500	4,053
1500 - 1600	3,449
1600 - 1700	2,639
1700 - 1800	2,349
1800 - 1900	2,265
>= 1900	33,675

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