Dear Bei,
Pavel's statistic can be completed by the analysis of the most frequent
values (modes) versus resolution.
When the resolution is plotted in the LOG-scale, these most
frequent values are practically linear functions giving their easy
interpolation / extrapolation as
mode(R) = 0.091*ln(resolution) + 0.134
mode(Rfree-R) = 0.024*ln(resolution) + 0.020
More detail can be found in Urzhumtsev, Afonine & Adams (2009) Acta Cryst.,
D65, 1283-1291.
Best regards,
Sacha
phenix.r_factor_statistics
gives:
Histogram of Rwork for models in PDB at resolution 0.6-99.0 A:
On 8/2/10 9:24 PM, joybeiyang wrote:
Dear all,
I remember that there used to be a post about the R-Rfree statistics vs
different resolution, but can not find it now, could anybody shed a light
on me?
Thank you very much in advance!
Best,
Bei
2010-08-03
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joybeiyang
