Hi, 

I know there is a tool and command "build". But it is not that interactive. I wonder if there is a feature in ChimeraX (or any other tools) that can allow the user to draw in 3D space (or 2D) lines and then specify some segments as alpha-helices and some other segments as beta-sheets. I imagine the generated structure can be a backbone populated with G (glycine). 

Thanks,
Roden


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