Figure 3
Plots of R factor and correlation coefficients versus ω of NCSA phase extension. The NCSA phase extension was performed from 5 to 3.5 Å at each ω of the sixfold axis. The phase extension was carried out in 100 steps and NCSA was iterated by 20 cycles at each resolution. The initial phases for each NCSA were the phases obtained by the phase extension of the SIRAS phases from 15 Å resolution. The best R factor and correlation coefficient were obtained at ω = 31.1°. |