# Missing residues on a protein

**URL:** <https://ask.bioexcel.eu/t/missing-residues-on-a-protein/6071>\
**Category:** General Topics in Molecular Dynamics\
**Created:** [April 13, 2026, 9:40am UTC](https://ask.bioexcel.eu/t/missing-residues-on-a-protein/6071 "2026-04-13T09:40:27Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Pietro](https://avatars.discourse-cdn.com/v4/letter/p/47e85d/32.png) [@Pietro](https://ask.bioexcel.eu/u/Pietro)\
**Post date:** [April 13, 2026, 9:40am UTC](https://ask.bioexcel.eu/t/missing-residues-on-a-protein/6071/1 "2026-04-13T09:40:27Z")

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Hello!

Prior to use GROMACS to simply perform a quick energy minimization on my protein, I used MODELLER to reconstruct some missing loops. Is that correct or i shouldn’t have spent that much time modelling the missing structural part?