Reference : Toward a Definition of X-ray Crystal Quality
Scientific journals : Article
Life sciences : Biochemistry, biophysics & molecular biology
http://hdl.handle.net/2268/25646
Toward a Definition of X-ray Crystal Quality
English
Maes, Dominique [Vrije Universiteit Brussel - VUB > > > >]
Evrard, Christine mailto [Université de Liège - ULg > Département des sciences de la vie > GIGA-R : Biologie et génétique moléculaire >]
Gavira, Jose [Laboratorio de Estudios Cristalograficos IACT > > > >]
Sleutel, Mike [Vrije Universiteit Brussel - VUB > > > >]
Van de Weerdt, Cécile mailto [Université de Liège - ULg > Département des sciences de la vie > GIGA-R : Biologie et génétique moléculaire >]
Otalora, Fermin [Laboratorio de Estudios Cristalograficos, IACT > > > >]
Garcia-Ruiz, Juan Ma [Laboratorio de Estudios Cristalograficos, IACT > > > >]
Nicolis, Grégoire [Université Libre de Bruxelles - ULB > > > >]
Martial, Joseph mailto [Université de Liège - ULg > Département des sciences de la vie > GIGA-R : Biologie et génétique moléculaire >]
Decanniere, Klaas [Vrije Universiteit Brussel - VUB > > > >]
2008
Crystal Growth & Design
American Chemical Society
8
12
4284-4290
Yes (verified by ORBi)
1528-7483
Washington
DC
[en] X-ray ; Crystal
[en] Crystal X-ray quality is usually evaluated by looking at data quality parameters such as (relative) Wilson B-factor,
resolution, R-factors, signal-to-noise ratio, and others. As these parameters are correlated, most studies focus on one or two of them.
As part of a study of the effects of microgravity on X-ray quality, full data sets of 35 ferritin crystals (17 PromISS-4 “space”
crystals and 18 from the ground control) were collected. Sixty-three parameters commonly used as indicative of X-ray data quality
taken from the output of the processing, scaling, and merging software packages were analyzed. This highly dimensional “quality
parameter dataset” was reduced using a principal component analysis. About 78% of the variability in the data set could be explained
with the first four principal components. A score-plot in this four-dimensional space clearly showed two tendencies, one for the
crystals grown in space and one for the ground crystals. The differences between the two groups are observed irrespective of the
software package. They can be attributed to the first principal component and reflect the superior quality of the space crystals.
Giga-Systems Biology and Chemical Biology
http://hdl.handle.net/2268/25646
10.1021/cg800699e

File(s) associated to this reference

Fulltext file(s):

FileCommentaryVersionSizeAccess
Restricted access
cg800699e.pdfPublisher postprint764.11 kBRequest copy

Bookmark and Share SFX Query

All documents in ORBi are protected by a user license.