Hi Dmitry, Our expert is away this week, but I will try to answer. There is a "volume unroll" command but as far as I know it only applies to cylindrical unrolling, no special treatment of helicity. So I don't know if that is what you want or not. For details, see: <https://rbvi.ucsf.edu/chimerax/docs/user/commands/volume.html#unroll> It makes a new map model, which you could save like any other map: <https://rbvi.ucsf.edu/chimerax/docs/user/commands/save.html#map> I hope this helps, 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 Sep 24, 2024, at 3:18 AM, Dmitry Semchonok via ChimeraX-users <chimerax-users@cgl.ucsf.edu> wrote:

Dear colleagues, When one has a helical structure, can it be unrolled, and can the new unrolled map be saved? Thank you. Kind regards, Dmitry