Dear Chimera-X users!

I try to use the morph command to model the conformational change of GPCR related to its activation.

Having two superimposed conformations of the receptor, which are different in the position of the internal part of the transmembrane helix VI, I try to visualize the displacement of this helix using

morph #2,1 frames 250

Unfortunately the produced trajectory looks very unnatural (one helix overlaps with another one).

Would it be possible to improve the accuracy of such morphing e.g. providing some restraints?

Many thanks in advance !

Enrico