Of course you can save a PDB file and name it whatever you want. 

Menu: File... Save (choose file type PDB, set file name/location)  or "save" command.

<https://rbvi.ucsf.edu/chimerax/docs/user/commands/save.html#pdb>

It would not automatically figure out the name for you, if that's what you mean.  That would require you to write your own python script which might be complicated, and I cannot advise on how to do that.

Elaine

> On Oct 9, 2024, at 9:57 AM, Prathvi Singh via ChimeraX-users <chimerax-users@cgl.ucsf.edu> wrote:
>
> Thank you so much for your prompt response Elaine. I was able to rotate using the torsion command.
>
> I just have one more follow-up question. Once I have made the rotation, I want to save the pdb file with its name containing the new dihedral angle value e.g., 1GWO_73.pdb. Is it possible?
>
> Thanks once again.
>
> On Wed, Oct 9, 2024 at 9:21 PM Elaine Meng <meng@cgl.ucsf.edu> wrote:
> Hi Prathvi,
> Yes in both, but I'll answer for ChimeraX:  see the "torsion" command
> <https://rbvi.ucsf.edu/chimerax/docs/user/commands/torsion.html>
>
> Regards,
> Elaine
> -----
> Elaine C. Meng, Ph.D.                       
> UCSF Chimera(X) team
> Resource for Biocomputing, Visualization, and Informatics
> Department of Pharmaceutical Chemistry
> University of California, San Francisco
>
> > On Oct 9, 2024, at 8:37 AM, Prathvi Singh via ChimeraX-users <chimerax-users@cgl.ucsf.edu> wrote:
> >
> > Hi Elaine,
> >
> > Is it possible to change the dihedral angle between any given four sets of atoms, say CA,CB,CG, HG2 of a Lysine residue using command line in either chimera/chmeraX?
> >
> > Thanks in advance,
> > Prathvi Singh,
> > Research Fellow,
> > Department of Biological Sciences & Bioengineering,
> > Indian Institute of Technology, Kanpur-208016
>
>
>
> --
> Prathvi Singh,
> Research Fellow,
> Department of Biological Sciences & Bioengineering,
> Indian Institute of Technology, Kanpur-208016
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