Hello James,

You can try the map2map from the SITUS package (
http://situs.biomachina.org/fguide.html) or em2em (
http://www.imagescience.de/em2em/)

Cheers

Filip Van Petegem



On Tue, Jul 13, 2010 at 5:32 AM, James Whittle
<whit...@crystal.harvard.edu>wrote:

> Hi all-
>
> I'm trying to convert a cryoEM map from FREALIGN for use with various CCP4
> programs, or with MAPMAN. Even though the MRC format is derived from the
> CCP4 map file format, every program I've tried fails to open it, (except for
> Chimera which displays the map but cannot save it to another format for lack
> of memory).
>
> For example, in MAPMASK I get the error:
>
> >>>>>> CCP4 library signal ccp4_map:No associated header (Error)
>          raised in ccp4_cmap_open <<<<<<
> >>>>>> CCP4 library signal ccp4_map:Cannot open file (Error)
>          raised in MRDHDS <<<<<<
>
> or with MAPMAN:
>
>  **CCPOPN ERROR**  FORMATTED      OLD     file open failure on unit   1
>  Logical name: DLP_100.map, File name: DLP_100.map
>  Cannot send after transport endpoint shutdown
>
>  ERROR --- While reading map header. Sorry !
>  ERROR --- While opening map file
>
>
>
> Is there a way to re-write the header to be compatible with CCP4?
>
> --James
>



-- 
Filip Van Petegem, PhD
Assistant Professor
The University of British Columbia
Dept. of Biochemistry and Molecular Biology
2350 Health Sciences Mall - Rm 2.356
Vancouver, V6T 1Z3

phone: +1 604 827 4267
email: filip.vanpete...@gmail.com
http://crg.ubc.ca/VanPetegem/

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