# Which version of the gromacs trajectory files can be used for g\_mmpbsa?

**URL:** <https://gromacs.bioexcel.eu/t/which-version-of-the-gromacs-trajectory-files-can-be-used-for-g-mmpbsa/3762>\
**Category:** User discussions\
**Created:** [March 2, 2022, 5:06pm UTC](https://gromacs.bioexcel.eu/t/which-version-of-the-gromacs-trajectory-files-can-be-used-for-g-mmpbsa/3762 "2022-03-02T17:06:31Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![merry](https://avatars.discourse-cdn.com/v4/letter/m/e480ec/32.png) [@merry](https://gromacs.bioexcel.eu/u/merry)\
**Post date:** [March 2, 2022, 5:06pm UTC](https://gromacs.bioexcel.eu/t/which-version-of-the-gromacs-trajectory-files-can-be-used-for-g-mmpbsa/3762/1 "2022-03-02T17:06:31Z")

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GROMACS version: 2019.5  
GROMACS modification: Yes/No

Is it possible to calculate the binding free energy using the g\_mmpbsa for the trajectory files of Gromacs version 2019.5?

Best

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**Author:** ![scinikhil](https://dub1.discourse-cdn.com/flex017/user_avatar/gromacs.bioexcel.eu/scinikhil/32/3483_2.png) [@scinikhil](https://gromacs.bioexcel.eu/u/scinikhil)\
**Post date:** [March 2, 2022, 6:47pm UTC](https://gromacs.bioexcel.eu/t/which-version-of-the-gromacs-trajectory-files-can-be-used-for-g-mmpbsa/3762/2 "2022-03-02T18:47:52Z")

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Please check previous post. The latest g\_mmpbsa i found to be supporting for gromacs is gmx 5.1.0