1Y13: Difference between revisions

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354 bytes added ,  16 March 2011
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The data for this project were provided by Jürgen Bosch (SGPP). The structure is [http://www.rcsb.org/pdb/explore/explore.do?structureId=1Y13 deposited] in the PDB, with a resolution of 2.2 A in spacegroup P4(3)2(1)2 (#96), solved with SAD.
The data for this project were provided by Jürgen Bosch (SGPP) and are linked to [http://bl831.als.lbl.gov/example_data_sets/ACA2011/DPWTP-website/index.html the ACA 2011 workshop website]. The structure is [http://www.rcsb.org/pdb/explore/explore.do?structureId=1Y13 deposited] in the PDB, solved with SAD at a resolution of 2.2 A in spacegroup P4(3)2(1)2 (#96).


== dataset E1 ==
== dataset E1 ==


Use generate_XDS.INP and run xds once. Based on R-factors and an inspection of BKGPIX.cbf, I modified the resulting XDS.INP to have
Use [[generate_XDS.INP]] and run xds once. Based on R-factors and an inspection of BKGPIX.cbf, I modified the resulting XDS.INP to have
  INCLUDE_RESOLUTION_RANGE=50 2.1
  INCLUDE_RESOLUTION_RANGE=50 2.1
  VALUE_RANGE_FOR_TRUSTED_DETECTOR_PIXELS=8000. 30000.  
  VALUE_RANGE_FOR_TRUSTED_DETECTOR_PIXELS=8000. 30000.  
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Some comments:
Some comments:
* CORRECT obviously indicates an orthorhombic spacegroup.  
* CORRECT obviously indicates an orthorhombic spacegroup.  
* the number of MISFITS is higher than 1%. Running "xdsstat > XDSSTAT.LP" we obtain, among other files, the file "misfits.pck" which can be visualized using VIEW or XDS-Viewer. This clearly shows that many misfits are due to faint high-resolution ice rings - so nothing to worry about.
* the number of MISFITS is higher than 1%. From the first long table (fine-grained in resolution) table in CORRECT.LP we learn that the misfits are due to faint high-resolution ice rings - so nothing to worry about.  


To my surprise, pointless does not agree with CORRECT's standpoint:
To my surprise, pointless does not agree with CORRECT's standpoint:
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  NUMBER OF ACCEPTED OBSERVATIONS                    474307
  NUMBER OF ACCEPTED OBSERVATIONS                    474307
  NUMBER OF UNIQUE ACCEPTED REFLECTIONS                79022
  NUMBER OF UNIQUE ACCEPTED REFLECTIONS                79022
so there may be something wrong with the data processing.
The easiest thing one can do is to inspect INTEGRATE.LP - this lists scale factor, beam divergence and mosaicity for every reflection. There's a [[jiffies|jiffy]] called "scalefactors" which grep's the relevant lines from INTEGRATE.LP
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