Re: [AMBER] Ptraj image problems

From: Jayalakshmi Sridhar <jsridhar.xula.edu>
Date: Wed, 12 May 2010 15:19:22 -0500

   <div style="font-family: 'Times New Roman'; font-size: 1 6px;"><br />I ran the script for 5 frames with trajout to pdb files as suggested. I got 5 pdb files. Each of them loaded normally = in
   vmd without any streaks. The avg structure in the earlier run and i= n the
   present 5 frame run looked normal in vmd.<br _moz_dirty== ""
   />Jaya.<br _moz_dirty="" /><br /><span>= On
   05/12/10, <b class="name">Thomas Cheatham III </b> & lt;tec3.utah.edu&gt;wrote:</span><blockquotecite=" mid:Pine.WNT.4.64.1005121359170.5316.guanine"class=" iwcQuote" style="border-left: 1px solid rgb(0, 0, 255); pa dding-left: 13px; margin-left: 0pt;" type="cite"><di= v
   class="mimepart text plain"><br />&gt; After putting t= he
   trajout statement after the strip command, I do not <br />&gt= ;
   see the box shape. The number of frames are also consistent with 2= 400
   <br />&gt; frames. But the atoms are still streaking in th= e vmd
   display. I am <br />&gt; attaching a picture of the imag= e as jpg
   file. Jaya.<br /><br />The position of the trajout,= in all
   versions of ptraj, is irrelevant.  <br />What is likel= y true is
   that there is a mismatch between your trajectory <br />and= your loaded
   prmtop (as mentioned by Prof. Simmerling).  (By the <= br />way,
   from the scripts shown previously you loaded AMBER traject= ory format <br
   />files, not binpos).<br /><br />The offs= ets seen in your
   movie are consistent with the AMBER trajectory <br />= not having box
   information, but the prmtop having box information (or = <br
   />vise-versa).  In this case, usually the first frame (in = a VMD
   movie) looks <br />OK, and subsequent ones get shifted.<= br
   /><br />To verify things are OK and its a prmtop mismatch, do= your
   script the same <br />for ~5 frames...<br /><br />trajin mdcrd 1 5 1<br /><br />and change the trajout to PDB files and look at these.<br /><br />trajout tmp-pdb pdb<br / ><br />(or also look at your avg.pdb)<br /><br />--tec3< br /><br /><br />_______________ ________________________ ________<br />AMBER mailing list<br />AMBER.am bermd.org<br /><a href="http://lists.ambermd.org/mailm an/listinfo/amber"target="_blank">http://lists.ambermd. org/mailman/listinfo/amber</a><br/></div></blockquote>< /div>


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Received on Wed May 12 2010 - 13:30:08 PDT
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