(IUCr) The phase problem

Figure 11
(a) A 2.6 Å SIR electron-density map with the final [alpha]

-carbon trace of the structure superimposed. [rho]

(x) = (1/V) $[\textstyle \sum]$ m|F_P|exp(i [alpha]

_best)exp(-2 [pi]

ih·x). (b) A small section of the map with the final structure sumperimposed.