Hi Wei,

cutting out a box with model and map around it may be a solution for your case. A tool for this is phenix.map_box or its GUI equivalent.

Pavel

P.S.: phenix.real_space_refine does this internally so 'irrelevant' box size never affects runtime of refinement.

On 12/28/18 23:14, dancingdream@163.com wrote:

Dear all,

The cell parameter of the EM map is always too large, which will make the model building program running very slow.

But in factor, the structure is a smal part of cell. So can I smaller the cell parameter when I use phenix.map_to_structure_factors to convert the EM map to mtz file.

Thank a lot!

Wei
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