I am working on the visualization of a trajectory containing only back-bone atoms of the protein obtained from the PCA. When I load this multi-pdb ensemble to Chimera-X I can see only back-bone traces without any secondary structure information. I've tried to use dssp command to re-assign the secondary structure but it did not change the visualization state. Would it be possible to do it in some automatic fashion via some built-in command?

Many thanks in advance

Cheers

Enrico