intra-perturbed group (fwd)

From: <>
Date: Fri, 7 Mar 2003 09:13:57 -0800 (PST)

---------- Forwarded message ----------
Date: Thu, 6 Mar 2003 16:29:26 -0400
From: Sophia Kondratova <>
To: amber <>
Subject: intra-perturbed group

For free energy calculations using INTPRT=5, how does amber find the
intra-perturbed group within a molecule.

I think that it looks for atom types, bond lengths, angles, and torsional
parameters that are changing from the initial to final state in FEP, but I a
not sure. What about non-bonded and 1-4's. Do these go into deciding
whether an atom is within the intra-pert group or not. Basically my
question is what criteria does amber use to decide if an atom is part of
the intra-pert group or not for the INTPRT calculations.

Thanks in advance for any help.

Sophia Kondratova
Received on Fri Mar 07 2003 - 17:53:02 PST
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