[sharp-discuss] How to do heavy atom detection on lower reolution through Autosharp

[Clemens Vonrhein]

Hi,

from what you write it seems you have

  - a Se dataset (peak ?) to 3.5A

  - some other dataset (native?) to higher resolution

If these two datasets (Se-SAD and native) are isomorphous: just run a
SIRAS job in autoSHARP! It will automatically use only 3.5A data for
the HA detection (obviously, since the HA dataset only has 3.5A data)
but then use all data for the density modifcation in SOLOMON and
automatic model building in ARP/wARP.

Your input datafiles (*.sca or *.mtz) should obviously only contain
data to a sensible resolution limit (i.e. where I/sig(I) drops below X
and Rmerge stayes below Y ... use X/Y as you please).

Also: give it the sequence and the number of Se atoms _per monomer_:
autoSHARP will figure out the number of molecules per asu for you.

If you give a bit more info about the actual data I might be able to
give more help ...

Cheers

Clemens

On Tue, Aug 22, 2006 at 11:21:11AM -0700, pramod at cdfd.org.in wrote:
> 
> Hi all
> I am a new user of the SHARP. My SAD data is of 3.5 Angstrom and i want 
> to run this through SHARP/AUTOSHARP at lower resolution to detect the Se 
> sites and the phase extension upto higher resolution. How should I detect 
> Se site for lower resolution through autosharp, becouse no any resolution 
> limit option(pull down option) is given in autosharp? Is i have to scale 
> and truncate my data at lower resolution and then use this file to detect 
> heavy atom site through AUTOSHARP and then these sites will be used to 
> get the elctron density map upto 3.5 Angstrom ,with the input as 3.5 Angstrom 
> scaled and truncated data ? please any one help me? 
> Thanks in advance
> With regards   
> Pramod Kumar
> Junior Research Fellow
> c/o-Dr.Shekher C Mande
> Center for DNA Fingerprinting and Diognostics
> ECIL road
> Nacharam
> Hyderabad-76
> 
> 
> 
> 
> 
> -
> 
> 
> _______________________________________________
> sharp-discuss mailing list
> sharp-discuss at globalphasing.com
> http://www.globalphasing.com/mailman/listinfo/sharp-discuss
> 

-- 

***************************************************************
* Clemens Vonrhein, Ph.D.     vonrhein AT GlobalPhasing DOT com
*
*  Global Phasing Ltd.
*  Sheraton House, Castle Park 
*  Cambridge CB3 0AX, UK
*--------------------------------------------------------------
* BUSTER Development Group      (http://www.globalphasing.com)
***************************************************************