OK. if I do what sort change in pdb file, <span id="result_box" class="short_text" lang="en"><span title="Alternatif çevirileri görmek için tıklayın" class="hps">there is no need</span> <span title="Alternatif çevirileri görmek için tıklayın" class="hps">to create .rtp</span> <span title="Alternatif çevirileri görmek için tıklayın" class="hps">file.</span></span> <span id="result_box" class="short_text" lang="en"><span title="Alternatif çevirileri görmek için tıklayın" class="hps">It</span> <span title="Alternatif çevirileri görmek için tıklayın" class="hps">seems</span> <span title="Alternatif çevirileri görmek için tıklayın" class="hps">difficult to</span> <span title="Alternatif çevirileri görmek için tıklayın" class="hps">create the .rtp file</span></span>.<br>
<br>Thanks for your help<br><br><div class="gmail_quote">29 Aralık 2010 19:49 tarihinde Justin A. Lemkul <span dir="ltr">&lt;<a href="mailto:jalemkul@vt.edu">jalemkul@vt.edu</a>&gt;</span> yazdı:<br><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
<div class="im"><br>
<br>
ahmet yıldırım wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
You said &quot;You do not have to make changes in pdb file&quot;.<br>
</blockquote>
<br></div>
When did I say that?<div class="im"><br>
<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
Then How will I create .rtp file.<br>
<br>
</blockquote>
<br></div>
That depends entirely upon what that residue is.  Is it a constituent residue of the protein, such that its backbone is incorporated in the protein structure? Is it connected via a sidechain?  Or is it a ligand?  Any or all of the following might apply:<br>

<br>
<a href="http://www.gromacs.org/Documentation/File_Formats/.rtp_File" target="_blank">http://www.gromacs.org/Documentation/File_Formats/.rtp_File</a><br>
<a href="http://www.gromacs.org/Documentation/How-tos/Adding_a_Residue_to_a_Force_Field" target="_blank">http://www.gromacs.org/Documentation/How-tos/Adding_a_Residue_to_a_Force_Field</a><br>
<a href="http://www.gromacs.org/Documentation/File_Formats/specbond.dat" target="_blank">http://www.gromacs.org/Documentation/File_Formats/specbond.dat</a><br>
<a href="http://www.gromacs.org/Documentation/Tutorials#General" target="_blank">http://www.gromacs.org/Documentation/Tutorials#General</a> (Drug-enzyme complex, although beware the use of PRODRG)<br>
<br>
And, of course, the manual, which describes the contents of the .rtp file more thoroughly.<br>
<br>
-Justin<br>
<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
29 Aralık 2010 19:32 tarihinde Justin A. Lemkul &lt;<a href="mailto:jalemkul@vt.edu" target="_blank">jalemkul@vt.edu</a> &lt;mailto:<a href="mailto:jalemkul@vt.edu" target="_blank">jalemkul@vt.edu</a>&gt;&gt; yazdı:<div>
<div></div><div class="h5"><br>
<br>
<br>
<br>
    ahmet yıldırım wrote:<br>
<br>
        Dear Justin,<br>
<br>
        Thanks for your reply. Where is the error?<br>
<br>
        Pdb file:<br>
<br>
        ATOM      1  N   ALA A   4<br>
        ATOM      2  CA  ALA A   4<br>
        ....<br>
        ATOM   2688  N   ALA B   4<br>
        ATOM   2689  CA  ALA B   4<br>
        ....<br>
        ATOM   5449  OXT GLN B 361<br>
        TER    5450      GLN B 361<br>
<br>
<br>
    Right here.  You&#39;re going from the end of chain B to the beginning<br>
    of chain A, then back to B later on.  Also realize that whatever<br>
    &quot;ABSG&quot; or &quot;BSG&quot; is, it won&#39;t be recognized by pdb2gmx unless you&#39;ve<br>
    built a proper .rtp entry for it.<br>
<br>
    -Justin<br>
<br>
        HETATM 5451  OAAABSG A   1<br>
        HETATM 5452  OABABSG A   1<br>
        ....<br>
        HETATM 5474  OAAABSG B   2<br>
        HETATM 5475  OABABSG B   2<br>
        ....<br>
        HETATM 5492  O   HOH A   2<br>
        HETATM 5493  O   HOH A 362<br>
        HETATM 5494  O   HOH A 363<br>
        ....<br>
        HETATM 5744  O   HOH B 362<br>
        HETATM 5745  O   HOH B 363<br>
<br>
        29 Aralık 2010 19:12 tarihinde Justin A. Lemkul &lt;<a href="mailto:jalemkul@vt.edu" target="_blank">jalemkul@vt.edu</a><br></div></div>
        &lt;mailto:<a href="mailto:jalemkul@vt.edu" target="_blank">jalemkul@vt.edu</a>&gt; &lt;mailto:<a href="mailto:jalemkul@vt.edu" target="_blank">jalemkul@vt.edu</a><div><div></div><div class="h5"><br>
        &lt;mailto:<a href="mailto:jalemkul@vt.edu" target="_blank">jalemkul@vt.edu</a>&gt;&gt;&gt; yazdı:<br>
<br>
<br>
<br>
<br>
           ahmet yıldırım wrote:<br>
<br>
               Dear Mark,<br>
<br>
               The chain identifier have continuous. In sequence does<br>
        not show<br>
               any problem.<br>
<br>
<br>
<br>
           Then you&#39;re not looking at the right contents; pdb2gmx wouldn&#39;t<br>
           complain otherwise.  Usually HETATM entries like HOH (water) are<br>
           after all protein chains, so you might have chains A, B, C,<br>
        etc for<br>
           protein followed by A, B, C, etc for water.  Have a more thorough<br>
           look through the .pdb file.<br>
<br>
           -Justin<br>
<br>
<br>
               29 Aralık 2010 15:10 tarihinde Mark Abraham<br>
               &lt;<a href="mailto:Mark.Abraham@anu.edu.au" target="_blank">Mark.Abraham@anu.edu.au</a> &lt;mailto:<a href="mailto:Mark.Abraham@anu.edu.au" target="_blank">Mark.Abraham@anu.edu.au</a>&gt;<br>
        &lt;mailto:<a href="mailto:Mark.Abraham@anu.edu.au" target="_blank">Mark.Abraham@anu.edu.au</a> &lt;mailto:<a href="mailto:Mark.Abraham@anu.edu.au" target="_blank">Mark.Abraham@anu.edu.au</a>&gt;&gt;<br>
               &lt;mailto:<a href="mailto:Mark.Abraham@anu.edu.au" target="_blank">Mark.Abraham@anu.edu.au</a><br>
        &lt;mailto:<a href="mailto:Mark.Abraham@anu.edu.au" target="_blank">Mark.Abraham@anu.edu.au</a>&gt;<br>
               &lt;mailto:<a href="mailto:Mark.Abraham@anu.edu.au" target="_blank">Mark.Abraham@anu.edu.au</a><br>
        &lt;mailto:<a href="mailto:Mark.Abraham@anu.edu.au" target="_blank">Mark.Abraham@anu.edu.au</a>&gt;&gt;&gt;&gt; yazdı:<br>
<br>
<br>
                  On 29/12/2010 10:12 PM, ahmet yıldırım wrote:<br>
<br>
                      Dear users,<br>
<br>
                      ab@ubuntu:~/Desktop/3O87$ pdb2gmx -f 3O87.pdb<br>
        -water tip3p<br>
<br>
                      Select the Force Field:<br>
                      5: OPLS-AA/L all-atom force field (2001 aminoacid<br>
        dihedrals)<br>
<br>
                      Fatal error:<br>
                      Chain identifier &#39;A&#39; was used in two<br>
        non-sequential blocks<br>
                      (residue 710, atom 54 49)<br>
<br>
                      What should I do to correct this error?<br>
<br>
<br>
                  Look at the entries whose chain identifier is A, and<br>
        see why they<br>
                  are non-sequential, and take suitable action to<br>
        remedy. You<br>
               may need<br>
                  to Google for the PDB file format if you don&#39;t already<br>
               understand it.<br>
<br>
                  Mark<br>
</div></div></blockquote>
<br><div><div></div><div class="h5">
-- <br>
========================================<br>
<br>
Justin A. Lemkul<br>
Ph.D. Candidate<br>
ICTAS Doctoral Scholar<br>
MILES-IGERT Trainee<br>
Department of Biochemistry<br>
Virginia Tech<br>
Blacksburg, VA<br>
jalemkul[at]<a href="http://vt.edu" target="_blank">vt.edu</a> | (540) 231-9080<br>
<a href="http://www.bevanlab.biochem.vt.edu/Pages/Personal/justin" target="_blank">http://www.bevanlab.biochem.vt.edu/Pages/Personal/justin</a><br>
<br>
========================================<br>
-- <br>
gmx-users mailing list    <a href="mailto:gmx-users@gromacs.org" target="_blank">gmx-users@gromacs.org</a><br>
<a href="http://lists.gromacs.org/mailman/listinfo/gmx-users" target="_blank">http://lists.gromacs.org/mailman/listinfo/gmx-users</a><br>
Please search the archive at <a href="http://www.gromacs.org/Support/Mailing_Lists/Search" target="_blank">http://www.gromacs.org/Support/Mailing_Lists/Search</a> before posting!<br>
Please don&#39;t post (un)subscribe requests to the list. Use the www interface or send it to <a href="mailto:gmx-users-request@gromacs.org" target="_blank">gmx-users-request@gromacs.org</a>.<br>
Can&#39;t post? Read <a href="http://www.gromacs.org/Support/Mailing_Lists" target="_blank">http://www.gromacs.org/Support/Mailing_Lists</a><br>
</div></div></blockquote></div><br><br clear="all"><br>-- <br>Ahmet YILDIRIM<br>