I distinctly remember reading a paper where B factors were predicted based on the location of the atoms (core vs exposed, main chain vs side chain) and the predicted values were not that far off. I wonder if B factors could actually be restrained at low resolution towards values reasonable/expected/similar to model values, just as how we put in model restraints for coordinate refinement these days, since many of us working at low resolution have at some point or another experienced catastrophe with B factor refinement. I wonder if this has been tested...

Engin

On 8/23/11 10:30 AM, Francis E Reyes wrote:
Hi all

What's a way to determining a B-factor to set for all residues of a model at 
low resolution (4A)? How valid is the wilson B at this resolution? (better than 
nothing?)

I'm in the process of fitting whole domains into some rasty experimental 
density maps and was thinking of doing a rigid body or very restrained  ( 
secondary structure | reference structure | etc ) refinement of the coordinates 
for helping the fit.

Thanks!

F



---------------------------------------------
Francis E. Reyes M.Sc.
215 UCB
University of Colorado at Boulder


--
Engin Özkan
Post-doctoral Scholar
Howard Hughes Medical Institute
Dept of Molecular and Cellular Physiology
279 Campus Drive, Beckman Center B173
Stanford School of Medicine
Stanford, CA 94305
ph: (650)-498-7111

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