[phenixbb] Different R-free values

Pavel Afonine pafonine at lbl.gov
Mon May 9 13:19:35 PDT 2011

Hi Jerome,

can you send a log file? What's the PDB code?

Differences in R between published and recomputed values are expected 
but in this case it is strange that Polygon and phenix.refine report 
different values since they use the same routines to compute them.


On 5/9/11 1:12 PM, Jerome Nwachukwu wrote:
> Dear all:
> I find that phenix.refine reports a higher starting R-free than those 
> stated for structures downloaded from the PDB. For instance, the 
> R-free stated in the
> PDB = 0.287, using Polygon = 0.2880, but the Start R-free from 
> phenix.refine = 0.3114
> Is this usual, or is something seriously wrong?
> Thank you,
> -Jerome

More information about the phenixbb mailing list