# HADDOCK docking

**URL:** <https://ask.bioexcel.eu/t/haddock-docking/6285>\
**Category:** HADDOCK\
**Created:** [October 6, 2026, 2:09pm UTC](https://ask.bioexcel.eu/t/haddock-docking/6285 "2026-10-06T14:09:42Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Eugeneng991031](https://avatars.discourse-cdn.com/v4/letter/e/8dc957/32.png) [@Eugeneng991031](https://ask.bioexcel.eu/u/Eugeneng991031)\
**Post date:** [October 6, 2026, 2:09pm UTC](https://ask.bioexcel.eu/t/haddock-docking/6285/1 "2026-10-06T14:09:42Z")

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Good evening , I was wondering something strange, let say i downloaded a protein structure containing a receptor protein and a ligand protein from PDB , then i attempt to split the protein and use HADDOCK to redock it . When I compare with the docked structure on BIOVIA discovery, there seems to be additional interacting site as compared to the native protein from PDB. Is it expected ?