[Chimera-users] Finding SASA for individual residues

[Elaine Meng]

Hi Prathvi,
Yes, either one.  

In Chimera, they are automatically calculated when you show a molecular surface.  It creates an attribute named areaSAS, as explained here:
<https://www.rbvi.ucsf.edu/chimera/docs/UsersGuide/representation.html#surfaces>

See also this previous chimera-user post on using Chimera to get a list of residue SASA values
<http://www.cgl.ucsf.edu/pipermail/chimera-users/2018-June/014729.html>

(If you use this page <https://www.rbvi.ucsf.edu/chimera/docs/feedback.html> to search chimera-users by "sasa", that was the top hit)

In ChimeraX, you would use the command "measure sasa" 
<https://rbvi.ucsf.edu/chimerax/docs/user/commands/measure.html#sasa>
... then save attribute "area" to file
<https://rbvi.ucsf.edu/chimerax/docs/user/commands/save.html#attributes>

I hope this helps,
Elaine
-----
Elaine C. Meng, Ph.D.                       
UCSF Chimera(X) team
Department of Pharmaceutical Chemistry
University of California, San Francisco

> On Nov 14, 2022, at 6:29 AM, Prathvi Singh via Chimera-users <chimera-users at cgl.ucsf.edu> wrote:
> 
> Hi Elaine,
> Can I use chimera or chimeraX to know the solvent accessible surface area (SASA) for selected residues?