Thanks Charles,
Swanand

On 9/20/06, [email protected] <[email protected]> wrote:
>
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> Hello Swanand--
>
> >
> > I am trying to use charmm22 forcefield in xplor-nih. I believe the
> charmm22
> > protein files are in toppar/charm22/***allh22x.pro. I copy those those
> files
> > to toppar/charmm22.***allh22x.pro and I run a simple script to read a
> > protein, initialize its topology and parameters. I get this error :
> >
> >  %PATCH-ERR: dihedral -C    +N    +CA   +HA   not found
> >  %PATCH-ERR: dihedral -C    +N    +CA   +CB   not found
> >  %PATCH-ERR: dihedral -CB   -CA   -C    -OT2  not found
> >  %PATCH-ERR: dihedral -CB   -CA   -C    -OT1  not found
> >  %PATCH-ERR: dihedral -HA   -CA   -C    -OT2  not found
> >  %PATCH-ERR: dihedral -HA   -CA   -C    -OT1  not found
>
> These errors are due to atoms which don't exist. For instance, GLY has
> no HA atom (at the C terminus). I think the resulting structure should
> be fine, though.
>
> >
> > I have attached my script and output, and also the inputs sequence file
> and
> > coordinates.
>
> I modified your script to perform some dynamics, and all seems ok- it is
> attached.
>
> regards--
> Charles
>
>
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-- 
You must be the change you wish to see in the world. (M K Gandhi)
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