Hi Enrico,

  I'd expect your command to rotate about the center of your dimer.  But apparently "center #1,2" is not the center of the dimer.  Why?  I'd guess it is not actually an exact homodimer.  You can place a marker (fake atom) at where this center is using

marker #3 position #1,2

and then you can try to figure out why that is not the center of the dimer.

https://www.cgl.ucsf.edu/chimerax/docs/user/commands/marker.html

  Tom

On May 31, 2024, at 9:13 AM, Enrico Martinez via ChimeraX-users <chimerax-users@cgl.ucsf.edu> wrote:

Dear Chimera-X users!

I am dealing with the visualisation of a complex dimer where each monomer is defined as a separate model like #1 and #2. For visualisation purposes I need to rotate the input construct by 180 degrees with the axis of rotation in the middle between the two monomers to avoid the shift of the complex in the x-plane at the end. That's what I have tried:

# turn on 180 deg during 10 sec

roll y 0.72 250 center #1,2 protein

wait 250

but the construct still shifted a bit towards one of the monomers. How could I do ii using the rotation axis, which would be in the center between them ?

Many thanks in advance

Enrico

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