Hello, That makes no sense to me. As far as I can tell, your command should work equally well regardless of which chain IDs are present. If it really doesn't work, I don't know what other command would work without having an example of the dimer situation to try myself. Best, Elaine ----- Elaine C. Meng, Ph.D. UCSF Chimera(X) team Department of Pharmaceutical Chemistry University of California, San Francisco

On Jul 22, 2022, at 3:03 AM, Enrico Martinez via ChimeraX-users <chimerax-users@cgl.ucsf.edu> wrote:

Dear ChimeraX users!

I am working on the visualization of protein-ligand interactions obtained from docking.

In the ChimeraX session I have a loaded session with 88 docking poses (consisting of each frame receptor and ligand) corresponded to the separate objects (1.1 .. to 1.88) From this ensemble I need to keep only the X object from these multiple states. I have tried to use the following command: close #1 & ~ #1.x

which works perfectly for the monomeric protein. But when I am dealing with the analysis of the dimer (with A and B chains) it does not work. Only close #1 still can be used to close ALL objects.

Which command could be used to keep the selected state from the ensemble for both monomer and dimer in the same way? Many thanks in advance Cheers Enrico