# Gromacs and charmm-gui

**URL:** <https://gromacs.bioexcel.eu/t/gromacs-and-charmm-gui/504>\
**Category:** User discussions\
**Created:** [July 15, 2020, 5:58pm UTC](https://gromacs.bioexcel.eu/t/gromacs-and-charmm-gui/504 "2020-07-15T17:58:39Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![newbie](https://dub1.discourse-cdn.com/flex017/user_avatar/gromacs.bioexcel.eu/newbie/32/283_2.png) [@newbie](https://gromacs.bioexcel.eu/u/newbie)\
**Post date:** [July 15, 2020, 5:58pm UTC](https://gromacs.bioexcel.eu/t/gromacs-and-charmm-gui/504/1 "2020-07-15T17:58:40Z")

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GROMACS version:2020  
GROMACS modification: Yes/No  
hello.  
I used Charmm-gui to build my initial structure of complex micelle and protein and I downloaded charmm-gui files. But now, because I don’t have any .tpr file I don’t know how should I analyze?

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**Author:** ![jalemkul](https://dub1.discourse-cdn.com/flex017/user_avatar/gromacs.bioexcel.eu/jalemkul/32/18_2.png) [@jalemkul](https://gromacs.bioexcel.eu/u/jalemkul)\
**Post date:** [July 15, 2020, 6:48pm UTC](https://gromacs.bioexcel.eu/t/gromacs-and-charmm-gui/504/2 "2020-07-15T18:48:10Z")

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CHARMM-GUI provides you all the inputs for running the simulations. The README tells you all the steps. There’s nothing to analyze until you’ve actually run the simulations, anyway :)

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**Author:** ![newbie](https://dub1.discourse-cdn.com/flex017/user_avatar/gromacs.bioexcel.eu/newbie/32/283_2.png) [@newbie](https://gromacs.bioexcel.eu/u/newbie)\
**Post date:** [July 15, 2020, 6:58pm UTC](https://gromacs.bioexcel.eu/t/gromacs-and-charmm-gui/504/3 "2020-07-15T18:58:13Z")

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thank you.