Supplementary Figure 4: R-protein content of the three purified SSU intermediates is distinct.

(a, b) Interface side representation of SSU for Figs. 4a and 4b respectively in the main text. (c) The three groups emerged from the hierarchical clustering analysis are plotted on the in vitro assembly map. The dotted lines divide the three groups. The circles around the r-proteins indicate the free precursor pool of that protein in the wild-type cells as determined previously37.