Figure 6
(a) Anomalous signal predicted using information available before the measurement of diffraction data for SAD data sets. The 218 SAD data sets are those shown in Fig. 3. The anomalous signal was predicted from the composition of the crystal, the wavelength of data collection and the resolution of data collection as described in the text. The actual anomalous signal is the normalized value of the anomalous difference Fourier map at coordinates of atoms in the anomalous substructure. (b) The fraction of the substructure correctly determined by likelihood-based substructure search as a function of the probability of structure solution estimated using information available before measurement of diffraction data. Each point is the fraction of correct sites for one SAD data set. The line is the smoothed average. |