Extrapolating to the infinite, I wonder how super-resolution fits into MD models or structure predictions?
Jacob On Thu, Dec 23, 2010 at 5:04 PM, Gerard Bricogne <g...@globalphasing.com> wrote: > Dear Bernhard, > > I must say that I find the "super-resolution" claims in this paper a > bit of a conjuring trick. If the final refined model has greater accuracy > than one would expect from the resolution of the data it has been refined > against, it is because that extra accuracy has been lifted from the higher > resolution data that were used to refine the structure on the basis of which > the elastic network restraints were created. > > Should we then say that we achieve super-resolution whenever we refine > a macromolecular structure using Engh & Huber restraints, because these > enable us to achieve distance accuracies comparable with those in the small > molecules structures in the Cambridge Structural Database? > > Perhaps I have missed an essential point of this paper. > > > With best wishes, > > Gerard. > > -- > On Thu, Dec 23, 2010 at 12:25:26PM -0800, Bernhard Rupp (Hofkristallrat a.D.) > wrote: >> Oops I am outdated: Axel just emailed me that he describes an improved >> coordinate estimate beyond the Rayleigh criterion in his recent paper >> >> Schroder GF, Levitt M, & Brunger AT (2010) Super-resolution biomolecular >> crystallography with low-resolution data. Nature 464(7292), 1218-1222. >> >> For the deformable elastic network (DEN) refinement, see his ref 14 >> >> Schroder GF, Brunger AT, & Levitt M (2007) Combining efficient >> conformational sampling with a deformable elastic network model facilitates >> structure refinement at low resolution. Structure 15(12), 1630-1641. >> >> BR > > -- > > =============================================================== > * * > * Gerard Bricogne g...@globalphasing.com * > * * > * Global Phasing Ltd. * > * Sheraton House, Castle Park Tel: +44-(0)1223-353033 * > * Cambridge CB3 0AX, UK Fax: +44-(0)1223-366889 * > * * > =============================================================== > -- ******************************************* Jacob Pearson Keller Northwestern University Medical Scientist Training Program cel: 773.608.9185 email: j-kell...@northwestern.edu *******************************************
