Dear Rex, if I understood corrctly what you are looking for you could also use Gerard Kleywegt's lsqman, where you can pick the atoms which you want to use for superpositioning.
Tim On Fri, Sep 03, 2010 at 12:44:03PM +0100, Rex Palmer wrote: > This is not really protein crystallography but we are trying to model build a > ligand into a protein binding site. A similar ligand is already in place and > we want to replace this by initially superimposing a phenyl ring which is > common to both ligands. We understand that such superpositioning can be done > with eg Quanta but do not have access to this program. Does anyone know of a > downloadable program that we could use instead? > > Rex Palmer > Birkbeck College, London -- -- Tim Gruene Institut fuer anorganische Chemie Tammannstr. 4 D-37077 Goettingen GPG Key ID = A46BEE1A
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