Hi Saverio, You can use the atom attribute named serial_number to specify the atom in the command lind. The symbol for atom attribute is @@ as mentioned in the specification help page: <https://rbvi.ucsf.edu/chimerax/docs/user/commands/atomspec.html#attributes> For example, to select atom number 2823 in model 1: select #1@@serial_number=2823 I don't think you need the chain ID since the serial number should be unique per model, but it should be OK if you also include it. 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 May 12, 2025, at 1:26 PM, saverio via ChimeraX-users <chimerax-users@cgl.ucsf.edu> wrote:
Hi, I would like to use pbond with a pair of atoms. For one of these it is available the model number , the chain ID and the atom serial number. How it is possible to give the atom specification ,having the previous three information, for using it in pbond?
Thanks.
Saverio