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Dear Dirk,

On Wed, Aug 23, 2006 at 10:14:55AM +0200, Dirk Kostrewa wrote:
> I can only second your statement. For (almost) atomic resolution 
> structures, there are enough observed data to allow refinement without 
> any ideal geometry parameters or with only little weights on them, 
> resulting in RMSDs comparable to well refined small organic molecules 
> (i.e. RMSD bonds ~ 0.02 A).

Where do you get this "RMSD bonds ~ 0.02 A" for well refined small
organic molecules from? Is there a paper about it? I would be very
interested to get hold of this, i.e. where someone also did a
restrained refinement against some ideal values and then calculated
the RMSD of the refined bond lengths against these ideal values.

The only value I know is the sigma value of the Engh&Huber
distribution(s), which is something completely different to the RMSD
we're interested in (as far as I understand).

Cheers

Clemens


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