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    Hi Henry,<br>
    <br>
    first off you don't need to use insertion codes to do what you are
    trying to do.<br>
    <br>
    Second, it looks like this scenario is described in section 5 here
    (page 42):<br>
    <br>
    "13 typical occupancy refinement scenarios and available options in
    phenix.refine"<br>
    <a class="moz-txt-link-freetext" href="https://www.phenix-online.org/newsletter/CCN_2015_07.pdf">https://www.phenix-online.org/newsletter/CCN_2015_07.pdf</a><br>
    <br>
    Please let me know if this is not your case, or it is still not
    clear, or you need help with this anyway..<br>
    <br>
    Good luck,<br>
    Pavel<br>
    <br>
    <div class="moz-cite-prefix">On 10/17/16 11:05, Christian Roth
      wrote:<br>
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      <p><font face="Arial">Hi Henry,</font></p>
      <p><font face="Arial">have you created a proper constraint group
          including both compounds as described in the manual under
          special cases for occupancy refingement? That should work, I
          presume. <br>
        </font></p>
      <p><font face="Arial"><br>
          Cheers</font></p>
      <p><font face="Arial">Christian</font></p>
      <p><font face="Arial"><br>
        </font></p>
      <div class="moz-cite-prefix">Am 15.10.2016 um 22:15 schrieb van
        den Bedem, Henry:<br>
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          <p class="MsoNormal"><span style="font-size:11.0pt">Hi:<o:p></o:p></span></p>
          <p class="MsoNormal"><span style="font-size:11.0pt"><o:p>�</o:p></span></p>
          <p class="MsoNormal"><span style="font-size:11.0pt">I�m
              refining a site where there�s two compounds, each at
              partial occupancy. I modeled that using alt codes and
              insertion codes combined, like this<o:p></o:p></span></p>
          <p class="MsoNormal"><span style="font-size:11.0pt"><o:p>�</o:p></span></p>
          <p class="MsoNormal"><span style="font-size:11.0pt">ATOM��
              6500� CA ACYS B 101B<o:p></o:p></span></p>
          <p class="MsoNormal"><span style="font-size:11.0pt">ATOM��
              6490� CA BXXX B 101A<o:p></o:p></span></p>
          <p class="MsoNormal"><span style="font-size:11.0pt"><o:p>�</o:p></span></p>
          <p class="MsoNormal"><span style="font-size:11.0pt">How can I
              constrain the occupancies so that they sum to unity? I
              tried several option, but the distinct insertions seem to
              refine independently. Sorry if a similar question has been
              posted before, but I could not find a solution searching
              phenixbb.<o:p></o:p></span></p>
          <p class="MsoNormal"><span style="font-size:11.0pt"><o:p>�</o:p></span></p>
          <p class="MsoNormal"><span style="font-size:11.0pt">Thanks!<o:p></o:p></span></p>
          <p class="MsoNormal"><span style="font-size:11.0pt"><o:p>�</o:p></span></p>
          <p class="MsoNormal"><span style="font-size:11.0pt">Henry</span><br>
          </p>
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