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Re: [ccp4bb] Why there are difference density when occupancy is 1.00
 

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CCP4bb <-- 2008 <-- January 2008 <-- 22 January 2008
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Subject: Why there are difference density when occupancy is 1.00
From: Sun Tang suntang2222 {- at -} YAHOO {- dot -} COM
Date: 2008-01-22 		Next message:
Subject: Re: salt sensitive complex
From: CCP4 ccp4hnaalas {- at -} GMAIL {- dot -} COM
Date: 2008-01-23


Subject: Re: Why there are difference density when occupancy is 1.00
From: James Irving irving {- dot -} james {- at -} GMAIL {- dot -} COM
Date: 2008-01-22
Hi Sun,
I suggest checking that the b-factors for those residues aren't
unexpectedly high compared to those in the flankinh regions.
Cheers,
James


On 1/23/08, Sun Tang wrote:
> Hello Everyone,
>
> When I refined a structure, I found strong difference density Fo-Fc at 3
> sigma contour for the for five residues which already have occupancy of 1.
> The density is continuous and so strong as if I did not put the residues
> there. Why was that? Can I put greater than 1 occupancy for those residues?
>
> Thank you very much for your opinions and suggestions!
>
> Best wishes,
>
> Sun Tang
>
>
> ---------------------------------
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Dr. James Irving
NH&MRC C.J. Martin Fellow
School of Biomedical Sciences
Building 13D
Monash University
Wellington Road
Melbourne 3800
Australia
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