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<DIV><FONT face=Arial>Dear all gmx_users,</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>I want to calculate the order parameter after the
incorporation of a molecule of DHA in the </FONT><FONT face=Arial>DPPC Bilayer
(100 DPPC lipids).</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>I have read in the manual that the program can gives an
idea of the ordering of a molecule from head to tail and I have read
that I have to construct an index file, but I don't know how I can group all the
CH2 segments that are necessery for this calculation.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial>I will appreciate your help,</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>thanks in advance!</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Caty.</FONT> </DIV>
<DIV><FONT face=Arial size=3></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Dr. Koukoulitsa Catherine<BR>Laboratory of
Molecular Analysis<BR>Institute of Organic & Phamaceutical
Chemistry<BR>Hellenic National Research Foundation<BR>Vas. Konstantinou
48<BR>11635, Athens<BR>Greece<BR> <BR>Tel: +30-210-7273869-71<BR>Fax:
+30-210-7273872<BR>Web: <A
href="http://www.eie.gr">www.eie.gr</A></FONT></DIV></BODY></HTML>