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    On 8/12/2011 5:04 PM, Chandan Choudhury wrote:
    <blockquote
cite="mid:CAHESojxF2sK4c3yWzSfz_u=mAzq3mOdZGBGDMkHyVH-W0sg4yg@mail.gmail.com"
      type="cite">For any text file, use your favorite editor to delete
      all your water molecules. It will load very fast. For the xtc/trr
      files, use trjconv with an index file to write a new xtc/trr file
      without water molecules. Index file should contain the atom nos.
      of the molecules you want.
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      <div>trjconv -s a.tpr -f a.xtc/trr -n a.ndx -o b.xtc/trr</div>
    </blockquote>
    <br>
    Indeed, and the OP may wish to consider the advice here <a
href="http://www.gromacs.org/Documentation/How-tos/Reducing_Trajectory_Storage_Volume">http://www.gromacs.org/Documentation/How-tos/Reducing_Trajectory_Storage_Volume</a><br>
    <br>
    Mark<br>
    <br>
    <blockquote
cite="mid:CAHESojxF2sK4c3yWzSfz_u=mAzq3mOdZGBGDMkHyVH-W0sg4yg@mail.gmail.com"
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      <div>chandan<br clear="all">
        <br>
        --<br>
        Chandan kumar Choudhury<br>
        NCL, Pune<br>
        INDIA<br>
        <br>
        <br>
        <div class="gmail_quote">On Thu, Dec 8, 2011 at 10:56 AM, Saba
          Ferdous <span dir="ltr">&lt;<a moz-do-not-send="true"
              href="mailto:saba.bsbi154@iiu.edu.pk">saba.bsbi154@iiu.edu.pk</a>&gt;</span>
          wrote:<br>
          <blockquote class="gmail_quote" style="margin:0 0 0
            .8ex;border-left:1px #ccc solid;padding-left:1ex;">
            Dear Sir,<br>
            I need to ask you that if I want only pdb coordinates in the
            resultant md-noPBC.xtc/md-noPBC.pdb file rather than the
            solvant atoms and coordinates then what should I do. because
            the water box causes very delay in loading of frames and its
            difficult to viualize the trajectory. kindly help me to get
            out of the broblem. I only want that my protein get display
            in vmd rather than the water box.<br>
            the size of md-noPBC.xtc is 612 Mb<br>
            md-noPBC.pdb&nbsp; is 13.2 GB<br>
            <br>
            analysis is getting very slow and system is hanging. kindly
            help me out to fix this problem.<br>
            <br>
            Regards <br>
            Thanks<span class="HOEnZb"><font color="#888888"><br>
                <br clear="all">
                <br>
                -- <br>
                Saba Ferdous
                <div>
                  Research Scholar (M. Phil)</div>
                <div>National Center for Bioinformatics</div>
                <div>Quaid-e-Azam University, Islamabad</div>
                <div>Pakistan</div>
                <br>
              </font></span><br>
            --<br>
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