Hi Kevin, This is how it looks when they are both "helix" but assigned to two different helices, so an intervening thinner segment is used to indicate they are not in the *same* helix. However, you can mark them as being in the same helix as one another -- that is another residue attribute, ss_id. How to control it is covered in more detail in the User Guide and various previous posts. See for example the following and links therein: <https://mail.cgl.ucsf.edu/mailman/archives/list/chimerax-users@cgl.ucsf.edu/...> 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 Mar 24, 2025, at 3:41 PM, Kevin M Jude via ChimeraX-users <chimerax-users@cgl.ucsf.edu> wrote:
For some reason the selected residues in this image are not displayed as a helix in ChimeraX. I think the command to force it woud be ‘setattr sel res ss_type 1’, but nothing changes (the log says “Assigning ss_type attribute to 2 items”). Same result if I try ‘setattr sel res is_helix 1’. Can anybody please set me straight (and my cartoons helical)? Using ChimeraX 1.9 for OS X. Thanks for any help. <image001.png> --