It sounds like you have it pretty clear already.  A point to note, in GROMACS 
the origin coordinate 0,0,0 is at a corner of the box, not the centre.  This 
could be what caused such a big (apparent) shift.



----- Original Message ----
From: maria goranovic <[EMAIL PROTECTED]>
To: Discussion list for GROMACS users <gmx-users@gromacs.org>
Sent: Monday, March 31, 2008 10:32:28 AM
Subject: [gmx-users] problem with bilayer PBC. after dynamics, bilayer becomes 
2 monolayers (shift in box center?)

Hello Folks,

I am simulations a lipid bilayer. After minimization, the output .gro file 
contains a bilayer that is a layer of water sandwiched between 2 monolayers of 
lipids (instead of being the other way around). I guess this has something to 
do with the periodic shift in boxes or something. Can someone please clarify 
this for me ? 

Thank you

-Maria

-- 
Maria G.
Technical University of Denmark
Copenhagen


      
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