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Thanks Elaine, <br>
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As you indicated chimera does read the dsn6 format. It does not recognize the extension .dsn6 (the one given in the PDB  files) but in the Open->Type selection dialogue there is the option 'BRIX or DSN6 density map' that works.
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Thanks again,<br>
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Hernando</div>
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<div><font size="2" face="Arial"><a><span style="font-size:9pt; font-family:Arial,Helvetica,sans-serif">Hernando Sosa</span></a><span><span style="font-size:9pt; font-family:Arial,Helvetica,sans-serif">                                                           
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<font size="2" face="Arial"><span><span style="font-size:9pt; font-family:Arial,Helvetica,sans-serif">Dept. of Physiology and Biophysics
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<div><font size="2" face="Arial"><span><span></span></span><span><span style="font-size:9pt; font-family:Arial,Helvetica,sans-serif">emai: 
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<div id="divRplyFwdMsg" dir="ltr"><font style="font-size:11pt" face="Calibri, sans-serif" color="#000000"><b>From:</b> Elaine Meng <meng@cgl.ucsf.edu><br>
<b>Sent:</b> Thursday, August 20, 2020 12:33 PM<br>
<b>To:</b> Hernando J Sosa <hernando.sosa@einsteinmed.org><br>
<b>Cc:</b> Chimera User Help <chimera-users@cgl.ucsf.edu><br>
<b>Subject:</b> Re: [Chimera-users] Open MTZ file</font>
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Hi Hernando,<br>
Chimera does not convert MTZ to density maps, sorry, as discussed in various older posts.<br>
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<br>
I don't really understand the part about dsn6: that is already a density map format, so if you have that, you could try opening it as dsn6 (e.g. by using filename ending with .omap or .brix).<br>
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<br>
ChimeraX can read mtz files if you both:<br>
(1) already have an atomic structure that goes with the mtz<br>
(2) download and install the Clipper bundle from the ChimeraX Tool Shed<br>
(start ChimeraX, then use menu Tools... More Tools to get to the Tool Shed)<br>
<br>
More details on opening MTZ in ChimeraX:<br>
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<br>
I hope this helps,<br>
Elaine<br>
-----<br>
Elaine C. Meng, Ph.D.<br>
UCSF Chimera(X) team<br>
Department of Pharmaceutical Chemistry<br>
University of California, San Francisco<br>
<br>
> On Aug 20, 2020, at 8:35 AM, Hernando J Sosa <hernando.sosa@einsteinmed.org> wrote:<br>
><br>
> Is there a way to read/convert MTZ or dsn6 (?)  crystallography electron density as provided by the Protein Data Bank files in chimera?<br>
><br>
> I know that Phenix has a routine to convert mrc density fles (readable by Chimera) into   MTZ  files (readable in Coot but not Chimera) but  not the other way around.<br>
><br>
> Thanks<br>
><br>
> Hernando<br>
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