# PDB residues renumbering?

**URL:** <https://ask.bioexcel.eu/t/pdb-residues-renumbering/1334>\
**Category:** HADDOCK\
**Created:** [December 18, 2018, 10:39pm UTC](https://ask.bioexcel.eu/t/pdb-residues-renumbering/1334 "2018-12-18T22:39:27Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![salvatta](https://avatars.discourse-cdn.com/v4/letter/s/9f8e36/32.png) [@salvatta](https://ask.bioexcel.eu/u/salvatta)\
**Post date:** [December 18, 2018, 10:39pm UTC](https://ask.bioexcel.eu/t/pdb-residues-renumbering/1334/1 "2018-12-18T22:39:28Z")

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The HADDOCK category is meant to discuss any HADDOCK-related issue. For general information about HADDOCK refer to [http://www.bonvinlab.org/software/haddock2.2](http://www.bonvinlab.org/software/haddock2.2)

Hi, I am using a PDB file (one of the protein chains) in my docking process which has residues numbered 5 to 75. When I specify active and passive residues, should I use the numbering that is in the PDB (5-75) or does HADDOCK automatically renumber the residues, therefore I should use 1-70?

Thanks!!!  
Salva

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**Author:** ![Adrimel](https://dub1.discourse-cdn.com/flex013/user_avatar/ask.bioexcel.eu/adrimel/32/40_2.png) [@Adrimel](https://ask.bioexcel.eu/u/Adrimel)\
**Post date:** [December 19, 2018, 11:46am UTC](https://ask.bioexcel.eu/t/pdb-residues-renumbering/1334/2 "2018-12-19T11:46:10Z")

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Dear Salva,

Keep the numbering of your original PDB file

Cheers,  
Adrien