Thanks judit, well one problem here would be that if you cant feed in 
operators, that you got say from the map correlations with
something like GETAX, and you only have two sites (one per monomer) thats not 
enough to define a two-fold... same goes
of course if you dont have a model (because you would need to get the averaging 
to work first... )

Tommi Kajander, Ph.D., Docent
Structural Biology and Biophysics
Institute of Biotechnology
University of Helsinki
Viikinkaari 1
(P.O. Box 65)
00014 Helsinki
Finland
p. +358-9-19158903
tommi.kajan...@helsinki.fi

On Dec 21, 2011, at 12:56 PM, Debreczeni, Judit wrote:

> 
> DM is kind of past tense (unless you are dealing with multicrystal averaging) 
> -- I'd use parrot or shelxe instead (both pretty fast and automated). NCS 
> operators as input do not seem to be in fashion these days, so you might have 
> to put up with heavy atoms or partial MR models…
>  
> I would not necessarily expect NCS related bits of the density to be fully 
> identical.
>  
> JED.
>  
>  
>  
> 
> 
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> From: CCP4 bulletin board [mailto:CCP4BB@JISCMAIL.AC.UK] On Behalf Of Tommi 
> Kajander
> Sent: 20 December 2011 16:19
> To: CCP4BB@JISCMAIL.AC.UK
> Subject: [ccp4bb] density mod., NSC and software..
>  
> Dear all, 
>  
> Stupid question: if i do density modification (flattening and extension say 
> from 6 to  4Å)
> w/o averaging on a symmetrical, say dimer, would you expect the thing stays 
> symmetric nevertheless?
> (in particular if there is a strong peak in the NCS??) (seems to me it doenst 
> necessarily...)
>  
> favorite programs for NCS averiging?? DM obviously, and solomon doesnt do it. 
>  Others that do it
> (with out a PDB or atoms to derive it from, but rather operators)
>  
> Thanks,
> Tommi
>  
> Tommi Kajander, Ph.D., Docent
> Structural Biology and Biophysics
> Institute of Biotechnology
> University of Helsinki
> Viikinkaari 1
> (P.O. Box 65)
> 00014 Helsinki
> Finland
> p. +358-9-19158903
> tommi.kajan...@helsinki.fi
>  
> 
> 
>  
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 

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