Hi Sam, I don't think those are tethers (which only connect sidechains to ribbon, not atoms to atoms), but instead long bonds from autochaining CA atoms of adjacent residues. Some people like to show a CA-only chain, which is why this autochaining exists, but you can turn it off as described below. Also "sidechain" includes CA since most people don't want them detached from the ribbon -- you would instead use "sideonly" to exclude CA. These selectors are explained here: <https://rbvi.ucsf.edu/chimerax/docs/user/commands/atomspec.html#builtin> I can't remember if autochaining will also connect other atoms, but If you try sideonly and still see those long bonds, you could also try the following command to turn off autochaining: setattr m autochain false The "setattr" command changes attribute values, "m" means attribute of models, "autochain" is the name of the specific attribute. <https://rbvi.ucsf.edu/chimerax/docs/user/commands/setattr.html> <https://rbvi.ucsf.edu/chimerax/docs/user/attributes.html> 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 Jan 25, 2024, at 6:12 AM, Samuel Haysom via ChimeraX-users <chimerax-users@cgl.ucsf.edu> wrote:
Hello,
I am trying to show only sidechains in one model, so I can compare rotamers with another model where I am displaying cartoon and sidechains. However, when I display sidechains using the sidechain selector (e.g. “show #1 & sidechain”) the CA atoms become linked by tethers.
<image001.png>
How can I suppress this display? I can see its possible to suppress tethers between cartoon helices and a sidechain in the same model but that doesn’t seem to apply here as I’m not showing the cartoon at all in the models where the CA tethers are present.
KR, Sam