X-dVal: X-ray Data Validation
phenix.xtriage / Matthew's Coefficient / Twinning Detection / CRYST Record analysis
This server uses software developed by the Phenix project, specifically the
phenix.xtriage program, and
software developed in our lab.
Job 53 (Mar 25th, 2013 [02:09 PM]) → twinning detected
Your X-dVal Results
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Largest Patterson peak with length larger than 15 Angstrom
Frac. coord. : 0.000 0.021 0.143
Distance to origin : 21.737
Height (origin=100) : 2.329
p_value(height) : 1.000e+00
The reported p_value has the following meaning:
The probability that a peak of the specified height
or larger is found in a Patterson function of a
macro molecule that does not have any translational
pseudo symmetry is equal to 1.000e+00.
p_values smaller than 0.05 might indicate
weak translational pseudo symmetry, or the self vector of
a large anomalous scatterer such as Hg, whereas values
smaller than 1e-3 are a very strong indication for
the presence of translational pseudo symmetry.