Hi Jabari, The command in ChimeraX is “dssp”: <http://rbvi.ucsf.edu/chimerax/docs/user/commands/dssp.html> You may already know this, but what is shown initially when you open PDB/mmCIF is usually from the contents of that structure file. Only if there is no secondary structure information in the file is “dssp” used automatically. I hope this helps, Elaine ----- Elaine C. Meng, Ph.D. UCSF Chimera(X) team Department of Pharmaceutical Chemistry University of California, San Francisco

On Jan 6, 2020, at 4:16 PM, Elliott, Jabari <jielliott@wustl.edu> wrote:

Dear users, I was wondering if there was a way to adjust the preset thresholds for betasheet and helix depictions in chimerax. Essentially, I am looking for a “ksdssp” command equivalent.

- “Ksdssp –s 2”

Best, Jabari