Figure 2 - full size

Figure 2.
Figure 2 C backbone plot of the F protein in the closed procapsid (red). The asymmetric unit triangle is shown, with the symmetry axes marked. The F-protein structure from the virion (yellow) was superimposed on the closed procapsid F protein by minimizing the r.m.s. distance between corresponding C atoms in the -helical domain (residues 175-207, 305-319). The main difference in the F protein between the virion and the closed procapsid is a hinge movement between the -helical domain and the -sandwich domain. Residues involved in second-site suppression of cold-sensitive D mutants21 are circled.