That might be a sign of pseudo-translational symmetry. Check your native
patterson. phenix.xtriage will also tell you. In the presence of
pseudo-translational symmetry, twinning stats will be hard to interpret.
Engin
On 9/22/09 12:31 PM, Ben Flath wrote:
>
> Hi all
>
> when subjecting my data to the perfect twin test <I*2>/<I>*2 I get
> values very close to 3 which is far off the theoretical values of 1.5
> and 2 for twinned and untwinned data.
>
> can anyone shed some light on what might be going on with my data.
> Could tetartohedral twinning have anything to do with it?
>
> Thanks
>
>
>
> ---------------------------------
>
> Benjamin Flath
> College of Pharmacy and Nutrition
> University of Saskatchewan
> 320 Thorvaldson Building
> 110 Science Place
> Saskatoon, SK
> S7N 5C9
--
Engin Özkan
Post-doctoral Scholar
Howard Hughes Medical Institute
Dept of Molecular and Cellular Physiology
279 Campus Drive, Beckman Center B173
Stanford School of Medicine
Stanford, CA 94305
ph: (650)-498-7111
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