Hello,
Can PyMOL give me the direction of an helix ?
Let's say I have two pdb files of 2 conformations of the same
protein, and some helices are moving between the two. I want to
measure the angle between their axes in conformation #1 and #2.
I could go for assuming the helix is an ellipsoid, calculate the
first eigen vector of the helix inertia matrix... but I guess
extracting the axis of the cylindrical helices as displayed by PyMOL
would do as well.
I've tried to look up in documentation but did not manage to find out
how to do this.
Thanks a lot,
Hugues
