Figure 1.

The basic scattering functions [UH] for the pre- (A) and post-translocational (B) states (relative intensities versus the momentum transfer, Q). The cross-term [UH] can be measured with the highest precision from the three basic scattering functions (7), and thus gives the most solid information about the localization of the label within the 70S ribosome. The line indicates the fit to the experimental data points by using the 70S model of the Frank group (11) and the eight-sphere model of the tRNAs (Fig. 2).