[phenixbb] The individual site refinement for Low resolution data (~3.8A)
Pavel Afonine
pafonine at lbl.gov
Sat Mar 19 00:30:03 PDT 2011
Hi Yu,
> I set 'wxc_scale = 0.1', and also included secondary structure
> restraints, reference model.
Using Ramachandran restraints may be a good idea to use at this
resolution too.
> The 'individual site' still give me higher Rfree and bigger gap
> between Rfree and Rwork of my dataset (~3.8A).
"Higher" and "bigger" than what? Your statement above does not contain
any information for me to comment on.
> Is the 'wxc_scale = 0.1' not tight enough?
If the default setting does not work for you, then you have two options:
1) let phenix.refine find optimal values for you automatically, using
optimize_wxc=true
and
optimize_wxu=true
or if this doesn't work for you too, then
2) keep trying different values for wxc_scale and wxu_scale until you
hit the one that produces the results you like.
Pavel.
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