[Chimera-users] visualizing density map

Walter R.P. Novak wnovak at brandeis.edu
Sun Jan 20 12:33:25 PST 2008

Hi Francesco,

I am not sure if this is also an issue in how the map was generated.  
Using FFT in the CCP4 suite, you should generate the 2Fo-Fc map in  
CCP4 format and format the map to cover "all atoms in PDB file." If  
your PDB file contains the region you want to view, you should be all  
set. You can also extend the map a certain number of Angstroms in  
FFT, the default is a 5 A border.


On Jan 17, 2008, at 10:49 AM, francesco zonta wrote:

> Dear Tom and Elaine, it seems my problem is not the one you both  
> recognized.
> I do not see a single plan, but a volume, the problem is that this  
> volume is too small to see the whole map.
> I am appending the map in ccp4 format to this reply. If you can  
> open it with another program (coot for example) you will notice  
> that the volume is much smaller than the one I need
> Thank you very much for your help
> best regards
> <cx26.map>
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Walter R.P. Novak, Ph.D.
Postdoctoral Fellow
Rosenstiel Basic Medical Research Center
Brandeis University
415 South St. MS 029
Waltham, MA 02454-9110
Phone: (781) 736-4944
Fax: (781) 736-2405

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