Re: [ccp4bb] external phases in sharp

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CCP4bb <-- 1999 <-- November 1999 <-- 30 November 1999

Previous message:
Subject: Position at deCODE biostructures
From: Scott Lovell SLovell {- at -} DECODE {- dot -} COM
Date: 2007-11-20

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Subject: Re: external phases in sharp
From: Eleanor Dodson ccp4 {- at -} YSBL {- dot -} YORK {- dot -} AC {- dot -} UK
Date: 2007-11-21

Subject: Re: external phases in sharp
From: Clemens Vonrhein vonrhein {- at -} GLOBALPHASING {- dot -} COM
Date: 2007-11-21

Hi Jan,

On Tue, Nov 20, 2007 at 11:19:24AM -0800, Jan Abendroth wrote:
> Hi all,
> I am trying to include exteral phase information in a sharp refinement. The
> phases come from dmmulti.
> Steps this far:
> - convert PHI and FOM to HLA and HLB in sftools,
> - rename PA and PB to HLA and HLB in cad
> - copy file (xx.extern.mtz) with all F, DANOs and HLA HLB into my datafiles
> directory
> - make sure that I am an "expert user" in Sharp
> ... now, how can I tell Sharp to use the external phases? Is it happy with
> HLA/HLB only?

No - SHARP needs all (HLA, HLB, HLC and HLD). Unfortunately (as you
discovered), DMMULTI doesn't write them as opposed to DM. To convert
those into HLA-D I woudl recommend using chltofom (from Kevin Cowtans
Clipper tools): it is available through the CCP4i.

> Once we are at it - how can one define in Sharp for a MIRAS case a native
> reference data set for which no anomalous data were collected. Sharp seems
> to need a DANO column.

You don't need to give it the DANO/SANO/ISYM columns - just leave them
at default 'None'.

Cheers

Clemens

>
> Thanks a lot
> Jan

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*
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CCP4bb navigation

CCP4bb <-- 1999 <-- November 1999 <-- 30 November 1999

Previous message:
Subject: Position at deCODE biostructures
From: Scott Lovell SLovell {- at -} DECODE {- dot -} COM
Date: 2007-11-20

Next message:
Subject: Re: external phases in sharp
From: Eleanor Dodson ccp4 {- at -} YSBL {- dot -} YORK {- dot -} AC {- dot -} UK
Date: 2007-11-21