Hi,
I am attempting to reconstruct my highly symmetric protein. While 2D classification yielded nice results, I encountered an issue with unaligned initial ab-initio reconstruction. Any advice on how to address this?
(P.S. I usually enforce symmetry in the refinement process and obtain high-quality particles.)
Yes - try disabling both real space recentering and enforcement of non-negativity. That pair of changes often helps mitigate this phenomenon in highly symmetric cases. If that doesn’t work, you can always enforce symmetry during ab initio.