[phenixbb] native Patterson peak
David Garboczi
dgarboczi at niaid.nih.gov
Thu May 1 10:23:23 PDT 2008
Data was integrated with XDS, indexed on all the
frames. No other choice but primitive
orthorhombic, I think. I was interpreting it as
two mols along the y-axis were two fold related,
which made a translation between them and the
next au along y.
Dave
>How certain are you regarding your space group ?
>The native peak at almost 0 -0.5 0 is suspicious. If you used HKL for
>indexing try something else with multiple images separated by e.g. 15
>degrees and see if you can process your dataset in a different space group.
>
>Juergen
>
>David Garboczi wrote:
>
>>We have datasets measured on crystals of a 19 kD protein that are
>>P212121, with cell constants of 66, 75, 136.
>>
>>Matthew's considerations say 3, 4, or 5 copies per au are probable.
>>
>>xtriage finds a native peak at (0.0, -0.5, 0.036) that is 31 in
>>height (origin=100)
>>
>>No self-rotation function peaks in xprep, that I can understand.
>>
>>Is this clearly translational symmetry that is making MR difficult?
>>
>>Hints as to how to go forward are welcome.
>>
>>thanks,
>>
>>Dave
>>
>>
>>
>>
>
>
>--
>Jürgen Bosch
>University of Washington
>Dept. of Biochemistry, K-426
>1705 NE Pacific Street
>Seattle, WA 98195
>Box 357742
>Phone: +1-206-616-4510
>FAX: +1-206-685-7002
>Web: http://faculty.washington.edu/jbosch
>
>
>
>
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--
David N. Garboczi, PhD
Phone: 301-496-4773
Investigator, Structural Biology Section (SBS)
Laboratory of Immunogenetics (LIG)
National Institute of Allergy and Infectious Diseases (NIAID)
National Institutes of Health (NIH)
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