[AMBER] Jumping from simulation box

From: <g.bakrani.sci.ui.ac.ir>
Date: Mon, 23 Apr 2018 00:19:33 +0430

  Dear Amber users,

  I intended to investigate peptide associations via MD simulation, so
I put 7 peptides in a truncated octahedron box with 30A hydration
layer. But, as I visualized my simulation in VMD, I realized that some
of my peptides moved to the edge of the box and then jumped to the
other side.

  Therefore, I have tested several commands in cpptraj such as _center
with autoimage _and set all peptides in the atom mask in order to
solve this problem. But again those peptides keep jumping from one
side to the other.

  I would be so much appreciated if somebody could help me to tackle
this problem.

  Here is my command used in cpptraj:

   

  1.parm x.prmtop

  trajin prod.mdcrd

  autoimage fixed :1-238 origin familiar

center

   

  2.parm

  trajin

  center :1-238 mass origin

  image origin familiar

   

  3.parm

  trajin

  image familiar com :1-238

Best regards,
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Received on Sun Apr 22 2018 - 13:00:02 PDT
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