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.

SAVES | [XdVal] | MTZdump | Ramachandran Plot | pdbU | pdbSNAFU (Check for ADIT compliance) | PROCHECK | Verify3D | ERRAT

Job 53 (Mar 25th, 2013 [02:09 PM])   → twinning detected

Your X-dVal Results

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Completeness Plot
CRYST1 Record Search
Twin Detection Plot
Anisotropicity analyses
Twinning Analyses
Patterson analyses
Systematic absences
Wilson ratio and moments
L test for acentric data
Twinning and intensity statistics summary

Merohedral Twin Detector: Padilla-Yeates Algorithm

   • the Twin Detection Server

The twin statistic calculated here is based on local intensity differences making it less sensitive to phenomena that tend to confound traditional intensity statistics, such as anisotropic diffraction and pseudo-centering.

Reference: J. Padilla & T. O. Yeates. A statistic for local intensity differences: robustness to anisotropy and pseudo-centering and utility for detecting twinning. Acta Crystallogr. D59, 1124-30, 2003.

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