*** For details on how to be removed from this list visit the *** *** CCP4 home page http://www.ccp4.ac.uk ***
Hi All, It looks like dual space methods seem to be a good way of finding anomalous scattering sites, if there are a large number of them. As far as I know, resolution limits are important for direct methods/dual space methods because you need to assume that you have discrete peaks in the maps, or the probability distribution doesn't apply (correct me if I'm wrong here). I'm aware of the ~1.4 Angstrom resolution limit for phasing all atoms by direct methods; is there a comparible rule for finding anomalous scatterers? Or do you just hope that your resolution (and usable anomalous signal) are sufficient to allow for peak resolution? Pete Pete Meyer Fu Lab BMCB grad student Cornell University
