# Hydrophobic SASA for a surface

**URL:** <https://gromacs.bioexcel.eu/t/hydrophobic-sasa-for-a-surface/6104>\
**Category:** User discussions\
**Tags:** gmx-sasa\
**Created:** [April 4, 2023, 8:55am UTC](https://gromacs.bioexcel.eu/t/hydrophobic-sasa-for-a-surface/6104 "2023-04-04T08:55:40Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![SerenaGiberti](https://avatars.discourse-cdn.com/v4/letter/s/f05b48/32.png) [@SerenaGiberti](https://gromacs.bioexcel.eu/u/SerenaGiberti)\
**Post date:** [April 4, 2023, 8:55am UTC](https://gromacs.bioexcel.eu/t/hydrophobic-sasa-for-a-surface/6104/1 "2023-04-04T08:55:40Z")

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Hi, I’m trying to get SASA information from a gold surface covered with ligands MD simulation. With gmx sasa i can only get the total SASA but I want the hydrophobic one. What should I do?  
Thanks  
Serena