# Protei size for haddock

**URL:** <https://ask.bioexcel.eu/t/protei-size-for-haddock/420>\
**Category:** HADDOCK\
**Created:** [July 27, 2017, 8:10am UTC](https://ask.bioexcel.eu/t/protei-size-for-haddock/420 "2017-07-27T08:10:45Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![gtatar](https://avatars.discourse-cdn.com/v4/letter/g/edb3f5/32.png) [@gtatar](https://ask.bioexcel.eu/u/gtatar)\
**Post date:** [July 27, 2017, 8:10am UTC](https://ask.bioexcel.eu/t/protei-size-for-haddock/420/1 "2017-07-27T08:10:45Z")

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Is there a limit to aminoacid length size for protein-protein docking?How much amino acid should it contain? Thank you.

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**Author:** ![mtrellet](https://dub1.discourse-cdn.com/flex013/user_avatar/ask.bioexcel.eu/mtrellet/32/42_2.png) [@mtrellet](https://ask.bioexcel.eu/u/mtrellet)\
**Post date:** [July 27, 2017, 9:22am UTC](https://ask.bioexcel.eu/t/protei-size-for-haddock/420/2 "2017-07-27T09:22:51Z")

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Currently, there is a limit of the number of atoms for the web server version set at **50.000** atoms per PDB file.