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[EMAIL PROTECTED] wrote on 06/08/2006 11:43:43 AM:

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> Hi guys,
>   I have tried AmoRe using a NMR ensemble, thus get an solution in
> the form of ensemble.I was informed that "a single macromolecular
> model derived from an ensemble of NMR models by averaging atom
> positions and minimizing the energy".Could you please tell me some
> software about this? Or any better way to convert an ensemble model
> into a single model?
>   Best regards!
>
>
>         huangwei
> [EMAIL PROTECTED]
>           2006-06-08
>

Hi Huangwei -

Most (all?) NMR ensembles from the PDB have a minimized, averaged structure
associated with them - look for other submissions from the same authors.
Unless the authors have done something rather odd, the averaged structure
and the ensemble should be in the same position and orientation; thus, you
can apply the same rotations and translations to the averaged structure as
Amore applied to the ensemble and get the equivalent result. (Note that you
also need to apply the initial translation to the origin and reorientation
that Amore does.)

Probably just as effective would be to least-squares superimpose the
averaged structure on your Amore-output ensemble.  LSQMAN will do this, I
believe.

For further refinement, don't forget to trim off the floppy bits - N and C
termini and disordered loops that have very high rmsd's in the ensemble but
show up in the averaged structure anyway.

- Matt

--
Matthew Franklin                     phone:(917)606-4116
Senior Scientist, ImClone Systems      fax:(212)645-2054
180 Varick Street, 6th floor
New York, NY 10014


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