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Dear Md. Munan Shaik,
a couple of aspects you might check:
- - first build the model AS MUCH AS POSSIBLE before running the first
refinement cycle
- - switch off automatic weight determination in refmac and use a low
weight (e.g. 0.005) and many cy
Are you sure of the space group? P622 is much rarer than P6(x)22 where x > 0
Phil
On 14 Sep 2011, at 15:34, Md Shaik wrote:
> Dear ccp4,
>
> I am refining one structure at low resolution (3.5 A). I solved the structure
> in space group P622 by molecular replacement. The Rw/Rf after some cycle o
Hi,
did you use refinement strategy suitable for low (3.5A) resolution
(secondary structure restraints, Ramachandran plot restraints, proper ADP
parameterization, SA, etc etc...)?
If you send me the data and model files off-list I will have a look.
Pavel
On Wed, Sep 14, 2011 at 7:34 AM, Md
Dear ccp4,
I am refining one structure at low resolution (3.5 A). I solved the structure
in space group P622 by molecular replacement. The Rw/Rf after some cycle of
rigid body refinement in Refmac5 is 34/37. But when I am trying to refine with
Restrain refinement in Refmac the Rw is going down
