[PyMOL] force cartoons through ca

How can we force cartoons through the alpha-carbon?  I apologize if 
this question was posted earlier.


Wataru Kagawa, Ph. D.
Special Postdoctoral Researcher
Protein Research Group
RIKEN (Physical and Chemical Research Institute)

W221, West Research Bldg.
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Yokohama, Japan 230-0045

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