[phenixbb] Reducing R/R-free

Pavel Afonine pafonine at lbl.gov
Mon Jan 12 13:01:41 PST 2015


Hi Tim,

it is a shame that I can't remember that particular paper where I think 
Randy Read or Axel Brunger have demonstrated that phase error and Rfree 
are well correlated. So if you get best Rwork and Rfree chances are you 
also get best map too.

All the best,
Pavel

On 1/12/15 3:54 AM, Tim Gruene wrote:
> Dear George,
>
> what are the reasons why are you trying to reduce the R/Rfree instead of
> producing the best possible map?
>
> Best,
> Tim
>
> On 01/11/2015 11:24 PM, George D wrote:
>> Hi Phenix users,
>>
>> I was looking at the phenix-refine manual and it mentions running
>>
>> optimize_mask=true
>>
>> optimize_xyz_weight=true
>>
>> optimize_adp_weight=true
>>
>>
>> I was wondering what else I could try to bring the Rw/Rf down by 1-2%
>> if possible, just wondering if there are any other strategies I could
>> try.
>>
>>
>> Thank you,
>>
>> George
>>
>>
>>
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>>
>
>
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