You want sym #3 H,8,120,10,-5 as indicated in the documentation https://www.cgl.ucsf.edu/chimerax/docs/user/commands/sym.html Tom
On Oct 9, 2024, at 2:50 PM, Hernando J Sosa <hernando.sosa@einsteinmed.edu> wrote:
Also when tryng to give the symetry explicitly I get an error. Perhaps I am using the wrong syntax (??)
sym #3 sym-type H,8,120,10,-5 Expected a keyword
Thanks
H.
___________________________________ Hernando Sosa, PhD. Dept. of Biochemistry Albert Einstein College of Medicine 1300 Morris Park Av. Bronx NY 10461 phone (718) 430-3456 emai: hernando.sosa@einsteinmed. <mailto:hernando.sosa@einsteinmed.org>edu ___________________________________
From: Hernando J Sosa <hernando.sosa@einsteinmed.edu> Sent: Wednesday, October 9, 2024 5:41 PM To: Tom Goddard <goddard@sonic.net> Subject: Re: [Chimera-users] Center and Orient
I need to explicitly give the symmetry (helical) because the command
measure symmetry #1 set true (#1 is my map)
reports:
No symmetry found for my_map.mrc
H.
From: Tom Goddard <goddard@sonic.net> Sent: Wednesday, October 9, 2024 12:32 PM To: Hernando J Sosa <hernando.sosa@einsteinmed.edu> Cc: chimera-users@cgl.ucsf.edu List <chimera-users@cgl.ucsf.edu> Subject: Re: [Chimera-users] Center and Orient
CAUTION: This email comes from an external source; the attachments and/or links may compromise our secure environment. Do not open or click on suspicious emails. Please click on the “Phish Alert” button on the top right of the Outlook dashboard to report any suspicious emails. Hi Hernando,
Here is how to apply symmetry to one copy of an atomic model in a symmetric cryoEM map in ChimeraX. First use the "measure symmetry" command to determine the map symmetry, then use the "sym" command to make the symmetric copies of the atomic model. Here is an example
open 8ofx open 16862 from emdb measure symmetry #2 set true sym #1 symmetry #2
Tom

On Oct 9, 2024, at 7:52 AM, Hernando J Sosa via Chimera-users <chimera-users@cgl.ucsf.edu> wrote:
Thanks Elaine,
I will try to do this with ChimeraX. What I am trying to to do is to generate symetry related copies of a model fitted into a density map using the sym command. I noticed that the only way to define the center of symetry to be centered on the density volume was using the option center #n (where n is the id of the voume density) but only after doing center and orient by pressing the buttons in the volume viewer.
Although chimeraX is much more prowerful I still find hard to find the the equivalent in ChimeraX of some operations that I use often in Chimera. 😉
Thanks again,
Best
H.
_ From: Elaine Meng <meng@cgl.ucsf.edu <mailto:meng@cgl.ucsf.edu>> Sent: Tuesday, October 8, 2024 5:04 PM To: Hernando J Sosa <hernando.sosa@einsteinmed.edu <mailto:hernando.sosa@einsteinmed.edu>> Cc: chimera-users <chimera-users@cgl.ucsf.edu <mailto:chimera-users@cgl.ucsf.edu>> Subject: Re: [Chimera-users] Center and Orient
CAUTION: This email comes from an external source; the attachments and/or links may compromise our secure environment. Do not open or click on suspicious emails. Please click on the “Phish Alert” button on the top right of the Outlook dashboard to report any suspicious emails.
In Chimera, there may not be commands that do exactly the same thing as some button. You might look at "focus <model-number>" and "reset" (maybe only if one model is open, or they haven't been moved relative to one another?) but in my tests, they did not do exactly the same thing as those buttons.
That's one reason ChimeraX is way better than Chimera! You can use the GUI and it shows the command that it used in the Log.
Best, 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 8, 2024, at 1:38 PM, Hernando J Sosa via Chimera-users <chimera-users@cgl.ucsf.edu <mailto:chimera-users@cgl.ucsf.edu>> wrote:
Dear Chimera,
What would be the equivalent commands to the Center and Orient buttons at the bottom of the Volume Viewer menu tab?
Thanks
H.
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