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</o:shapelayout></xml><![endif]--></head><body lang=ZH-TW link="#0563C1" vlink="#954F72" style='text-justify-trim:punctuation'><div class=WordSection1><p class=MsoNormal><span lang=EN-US>Hi,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>I am trying to inspect electron density of X-ray data.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>I have the PDB-formatted coordinate file a.pdb (not been submitted to PDB yet) and a mtz file (a.mtz).<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>I have downloaded Clipper to Chimera X (1.2.5) running on Window 10. <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>I have opened my a.pdb, and I then tried to open my a.mtz file from the File-Open and I specified the file type with “*.mtz”, and opened the a.mtz file, but I then got the error message: “Must specify a structure model to associate with crystallographic data”.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>I know that I was not doing it correctly (e.g. not typing proper commands with correct syntax.). I looked into the description in the URL below. However, I just could not get it work. Any help will be appreciated. Thanks!<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US><a href="http://rbvi.ucsf.edu/chimerax/docs/user/commands/open.html#clipper">http://rbvi.ucsf.edu/chimerax/docs/user/commands/open.html#clipper</a><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Best wishes,</span><span lang=EN-US><br><br>Winston<br><br></span><span lang=EN-US><o:p></o:p></span></p></div></body></html>