[Chimera-users] Chimera: doubt on axes measurement
pett at cgl.ucsf.edu
Thu Aug 7 17:37:56 PDT 2008
Oops. The measurement isn't honoring the relative motion of the
models -- the values you see are for the original coordinates of the
models. I've just committed a fix so that it does consider the
relative positioning of the models when computing the angle/distance
values. It will be in tonight's build and you should be able to get
it tomorrow (www.cgl.ucsf.edu/chimera -- follow the "Daily Builds"
UCSF Computer Graphics Lab
On Aug 7, 2008, at 2:49 PM, Giovanni Cardone wrote:
> 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
> <Picture 9.png>
> Chimera-users mailing list
> Chimera-users at cgl.ucsf.edu
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