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Dear Zhongli,

The MTZ format is not an electron density map format, but a format for intensity and structure factor data.

By using the 'Run FFT - Create Map' task in ccp4i, you can calculate a map file in the CCP4 map format, using your MTZ file as input.

If you name this map file with the suffix .ccp4 (e.g. mymap.ccp4), you can load it straight into pymol (you need to then render it with the isomesh or isosurface commands to see it).

If for some reason you need to convert it to XPLOR format, mapman (from USF) is very useful.

Cheers,
Charlie

PS: for those who (apologise for | complain about) off-topic posting:
From http://www.ccp4.ac.uk/ccp4bb.php:
> CCP4bb is an electronic mailing list intended to host discussions
> about topics of general interest to macromolecular crystallographers.
> Any crystallographic-related item is acceptable, and doesn't have to
> be directly related to CCP4.

--
NEW ADDRESS as of 1st Sep 2006
Charlie Bond
[EMAIL PROTECTED]
Professorial Fellow
University of Western Australia
School of Biomedical, Biomolecular and Chemical Sciences
M310
35 Stirling Highway
Crawley WA 6009
Australia

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