[Chimera-users] Chimera: doubt on axes measurement

[Giovanni Cardone]

Hi everybody,
I have a doubt about my proper using the tool Axes for measuring  
angle between helices.
After aligning two model and generating the axes corresponding to the  
helices of interest, I select them in the 'Structure Measurements'  
dialog windows.
As you can see from a snapshot, they look properly selected. They are  
almost overlapping, but in the Reply Log I get the following info:

col_best_001.pdb helix 10/col_best_005.pdb helix 2 crossing angle:  
36.9 degrees, distance: 15.3 angstroms

Beside the value of the angle seeming to me too high, shouldn't the  
distance between the helices be within few angs (at least according  
to how I interpret the documentation)?
Probably I am missing something.

Thanks in advance,
Giovanni Cardone


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