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    Hi,<br>
    <br>
    I would like to see this example too. <br>
    <br>
    You can define a bond between any pair of atoms, any number of
    bonds, including bonds between symmetry related atoms. This is
    explained in details here:<br>
    <br>
<a class="moz-txt-link-freetext" href="http://phenix-online.org/documentation/reference/refinement.html#definition-of-custom-bonds-and-angles">http://phenix-online.org/documentation/reference/refinement.html#definition-of-custom-bonds-and-angles</a><br>
    <br>
    Example:<br>
    <br>
    refinement.geometry_restraints.edits {<br>
    � bond {<br>
    ��� action = *add<br>
    ��� atom_selection_1 = chain A and resseq 123 and name O<br>
    ��� atom_selection_2 = chain Z and resseq 321 and name N<br>
    ��� symmetry_operation = -x-1/2,y-1/2,-z+1/2<br>
    ��� distance_ideal = 1.55<br>
    ��� sigma = 0.02<br>
    � }<br>
    }<br>
    <br>
    The best way to check that the bond you defined was actually used in
    refinement is to find it in .geo file that lists all restrains used
    in refinement.<br>
    <br>
    Pavel<br>
    <br>
    <div class="moz-cite-prefix">On 12/4/14 10:47 AM, Nigel Moriarty
      wrote:<br>
    </div>
    <blockquote
cite="mid:CANkP=2eVA+wbZef9Sew9HZWN_Yf+cWPBUQtVHMtnjGkpsgbALg@mail.gmail.com"
      type="cite">
      <div dir="ltr">Jens
        <div><br>
        </div>
        <div>You should try�</div>
        <div><br>
        </div>
        <div>phenix.ligand_linking model.pdb</div>
        <div><br>
        </div>
        <div>to see if that is helpful. I think, though, that you should
          send me an example so I can check the best method.</div>
      </div>
      <div class="gmail_extra"><br clear="all">
        <div>
          <div class="gmail_signature">
            <div dir="ltr">Cheers
              <div><br>
              </div>
              <div>Nigel
                <div><br>
                </div>
                <div>---</div>
                <div>Nigel W. Moriarty<br>
                  Building 64R0246B, Physical Biosciences Division<br>
                  Lawrence Berkeley National Laboratory<br>
                  Berkeley, CA 94720-8235<br>
                  Phone : 510-486-5709� �� Email : <a class="moz-txt-link-abbreviated" href="mailto:NWMoriarty@LBL.gov">NWMoriarty@LBL.gov</a><br>
                  Fax�� : 510-486-5909� � �� Web� : <a
                    moz-do-not-send="true" href="http://CCI.LBL.gov"
                    target="_blank">CCI.LBL.gov</a></div>
              </div>
            </div>
          </div>
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        <br>
        <div class="gmail_quote">On Thu, Dec 4, 2014 at 9:47 AM, jens j
          birktoft <span dir="ltr">&lt;<a moz-do-not-send="true"
              href="mailto:birktoft@nyu.edu" target="_blank">birktoft@nyu.edu</a>&gt;</span>
          wrote:<br>
          <blockquote class="gmail_quote" style="margin:0 0 0
            .8ex;border-left:1px #ccc solid;padding-left:1ex">
            <div dir="ltr">Hi Everybody.
              <div><br>
              </div>
              <div>Are there ways to restrain non-covalent interactions
                between molecules in adjacent asymmetric units?</div>
              <div>I know the custom bond procedure works well for
                covalent bonds. However I also would like to add
                restraints for (1) bond angles, (2) torsion angles (less
                important) and (3) nucleotide base-pairing. I know that
                all of these can be generated via the custom bond
                syntax, but that is a rather tedious and time-consuming
                process.� Perhaps there is a simpler way</div>
              <div><br>
              </div>
              <div>I know this issue has been raised before but am
                unaware of any new developments.</div>
              <div><br>
              </div>
              <div>Cheers</div>
              <span class="HOEnZb"><font color="#888888">
                  <div><br>
                  </div>
                  <div>Jens<br clear="all">
                    <div><br>
                    </div>
                    -- <br>
                    <div>
                      <div>+++++++++++++++++++++++++++++++++++++++++++++++++++<br>
                        Jens J.�<span
                          style="background-color:yellow;background-repeat:initial
                          initial">Birktoft</span></div>
                      <div><span
style="background-color:rgb(255,255,204);color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px">Director</span><span
style="color:rgb(136,136,136);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255)">�</span><span
style="background-color:rgb(255,255,204);color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px">of</span><span
style="color:rgb(136,136,136);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255)">�</span><span
style="background-color:rgb(255,255,204);color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px">Crystallography</span><span
style="color:rgb(136,136,136);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255)">�</span></div>
                      <div>Structural DNA Nanotechnology</div>
                      <div>Chemistry Department,<br
                          style="font-family:arial,sans-serif;background-color:rgb(255,255,255)">
                        New York University</div>
                      <div>e-mail:�<a moz-do-not-send="true"
                          href="mailto:jens.knold@gmail.com"
                          target="_blank"><span
                            style="background-color:yellow;background-repeat:initial
                            initial">jens</span>.<span
                            style="background-color:yellow;background-repeat:initial
                            initial">knold</span>@gmail.com</a>; Phone:
                        <a moz-do-not-send="true"
                          href="tel:212-749-5057" value="+12127495057"
                          target="_blank">212-749-5057</a><br>
                        very slow-mail: 350 Central Park West, Suite 9F,
                        New York, NY 10025<br>
+++++++++++++++++++++++++++++++++++++++++++++++++++</div>
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