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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">What is actually blowing up? The protein or the phosphate ions? Do the phosphate ions run OK by themselves in water?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Catch ya,<br>
<br>
Dr. Dallas Warren<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Medicinal Chemistry and Drug Action<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Monash Institute of Pharmaceutical Sciences</span><span style="font-size:10.0pt;font-family:"Calibri","sans-serif";color:#1F497D">, Monash University<br>
381 Royal Parade, Parkville VIC 3010<br>
dallas.warren@monash.edu<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Calibri","sans-serif";color:#1F497D">+61 3 9903 9304<br>
---------------------------------<br>
When the only tool you own is a hammer, every problem begins to resemble a nail.</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">
<o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> gmx-users-bounces@gromacs.org [mailto:gmx-users-bounces@gromacs.org]
<b>On Behalf Of </b>bharat gupta<br>
<b>Sent:</b> Wednesday, 28 September 2011 12:48 PM<br>
<b>To:</b> jalemkul@vt.edu; Discussion list for GROMACS users<br>
<b>Subject:</b> Re: [gmx-users] Re: simulation of protein/water and phosphate ion<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">Hi,<br>
<br>
I tried simulating the system again but this time with 2 phsophate ion and the charge of the system was neutralized by adding 6 sodium ions . After minimizing , I equilibrated for 500 ps but I got "LINCS" error around 300ps. It's happening due to the addition
of phosphate ions as I have simulated my protein in water earlier without any problem. During nvt quilibration the temperature coupling settings were for Protein and Non protein groups. Do I have to make groups for Protein and water_ion. Please comment??<o:p></o:p></p>
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<p class="MsoNormal">On Tue, Sep 27, 2011 at 7:09 PM, Justin A. Lemkul <<a href="mailto:jalemkul@vt.edu">jalemkul@vt.edu</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal"><br>
<br>
bharat gupta wrote:<o:p></o:p></p>
<p class="MsoNormal" style="margin-bottom:12.0pt">HI,<br>
<br>
I have tried simulating my protein (GFP) solvated with water molecules and 10 phosphate ions. During the md run step the system starts exploding after 500 ps. What could be the reason for this . I know this is happening due to the addition of phosphate ion
but I need to study the binding of ions . So, what shall I do ??<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><a href="http://www.gromacs.org/Documentation/Terminology/Blowing_Up#Diagnosing_an_Unstable_System" target="_blank">http://www.gromacs.org/Documentation/Terminology/Blowing_Up#Diagnosing_an_Unstable_System</a><br>
<br>
-Justin<br>
<br>
-- <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>
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<br>
-- <br>
Bharat<br>
Ph.D. Candidate<br>
Room No. : 7202A, 2nd Floor<br>
Biomolecular Engineering Laboratory<br>
Division of Chemical Engineering and Polymer Science<br>
Pusan National University<br>
Busan -609735<br>
South Korea<br>
Lab phone no. - +82-51-510-3680, +82-51-583-8343<o:p></o:p></p>
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<p class="MsoNormal">Mobile no. - 010-5818-3680<br>
E-mail : <a href="mailto:monu46010@yahoo.com" target="_blank">monu46010@yahoo.com</a><o:p></o:p></p>
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