On Thursday 01 March 2007 10:32, John Bruning wrote: > Where can I generate the following numbers in CCP4 coming with pdb and mtz > from Refmac? > > Luzzati SigmaA (obs) > Luzzati ESD (R-free set) > Luzzati SigmaA (R-free set).
The answer is that you should not be using Luzatti plots to estimate error. (Actually, I'm not sure what "Luzatti SigmaA Rfree" means in the first place). You should instead use the ESU values from either Maximum Likelihood or from the Cruickshank DPI empirical indices. These are given in the PDB file output by refmac. -- Ethan A Merritt Courier Deliveries: 1959 NE Pacific Dept of Biochemistry Health Sciences Building University of Washington - Seattle WA 98195-7742
