Hello, Actually it IS currrently in ChimeraX but deprecated for possible removal and not documented because the cellPACK website had few entries (maybe doesn't exist any more? I couldn't reach it today) and as far as we knew people weren't actively creating new ones. Because I'd cached a many-years-ago downloaded cellpack model in ~/Downloads/ChimeraX/cellPACK/, I'm able to use a ChimeraX command to "fetch" from the cellPACK database, which actually reopens that old, locally cached stuff: open HIV-1_0.1.6 from cellpack Maybe if you have previously downloaded cellPACK models you would be able to open them in the same way. 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 21, 2026, at 8:53 PM, huybk81--- via ChimeraX-users <chimerax-users@cgl.ucsf.edu> wrote:

Hi, In Chimera, there is a cellpack plugin to open a cellpack file. Is there any particular reason that ChimeraX doesn't have an equivalent function? _______________________________________________ ChimeraX-users mailing list -- chimerax-users@cgl.ucsf.edu To unsubscribe send an email to chimerax-users-leave@cgl.ucsf.edu Archives: https://mail.cgl.ucsf.edu/mailman/archives/list/chimerax-users@cgl.ucsf.edu/