# Fixing periodic boundary conditions distance artefacts **URL:** \ **Category:** User discussions\ **Created:** [November 16, 2020, 2:34pm UTC](https://gromacs.bioexcel.eu/t/fixing-periodic-boundary-conditions-distance-artefacts/1096 "2020-11-16T14:34:25Z")\ **Posts on this page:** 1\ **Showing post:** 2
**Author:** ![alevilla](https://dub1.discourse-cdn.com/flex017/user_avatar/gromacs.bioexcel.eu/alevilla/32/439_2.png) [@alevilla](https://gromacs.bioexcel.eu/u/alevilla)\ **Post date:** [November 17, 2020, 8:46am UTC](https://gromacs.bioexcel.eu/t/fixing-periodic-boundary-conditions-distance-artefacts/1096/2 "2020-11-17T08:46:58Z")
Maybe this post can help you > [@Seemingly unresolvable PBC problem on protein complex](https://gromacs.bioexcel.eu/t/seemingly-unresolvable-pbc-problem-on-protein-complex/786): > > GROMACS version: 2019.4 GROMACS modification: No Dear All, I have a protein complex on which I ran some REMD and I want to solve PBC issues before analysis. However, no matter what I tried, one of the proteins still jumps out of the box. Firstly I make the system whole with: $gmx trjconv -f md.xtc -s nvt\_298.15.tpr -pbc whole -o whole -n index.ndx This makes the molecules whole, although both proteins in the complex “jump around”. I have then centered the system on an interfacial residue… Kind regards --- _[View the full topic](https://gromacs.bioexcel.eu/t/fixing-periodic-boundary-conditions-distance-artefacts/1096)._