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??<br>
<br><div class="gmail_quote">On Tue, Sep 27, 2011 at 7:09 PM, Justin A. Lemkul <span dir="ltr"><<a href="mailto:jalemkul@vt.edu">jalemkul@vt.edu</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<div class="im"><br>
<br>
bharat gupta wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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 ??<br>
<br>
</blockquote>
<br>
</div><a href="http://www.gromacs.org/Documentation/Terminology/Blowing_Up#Diagnosing_an_Unstable_System" target="_blank">http://www.gromacs.org/<u></u>Documentation/Terminology/<u></u>Blowing_Up#Diagnosing_an_<u></u>Unstable_System</a><br>
<br>
-Justin<br>
<br>
-- <br>
==============================<u></u>==========<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.<u></u>vt.edu/Pages/Personal/justin</a><br>
<br>
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</font></blockquote></div><br><br clear="all"><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<div>Mobile no. - 010-5818-3680<br>E-mail : <a href="mailto:monu46010@yahoo.com" target="_blank">monu46010@yahoo.com</a></div><br>