restrain a residue as center of mass

From: eric hu <>
Date: Tue 26 Nov 2002 15:36:19 -0800 (PST)

Hi, I want to freeze the internal motion of an
unnatural residue which happens to have two molecules.
I still want the residue's center of mass to have all
the freedoms. I wonder if there is way to do this. I
have tried to constrain individual atoms or bond
distances and they will either fix the atoms in the
space of there are still internal motions. Thanks a


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Received on Tue Nov 26 2002 - 15:36:19 PST
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