Fig. 4: Sub-tomogram averages of representative RSV F pairs.

a Single slice from sub-tomogram average of four RSV F trimers. b Slice from average in a viewed rotated −90° around x. c Slice from average in a rotated 180° around the x-axis (as viewed from virus interior) through the position of the M-lattice. d–f Isosurfaces of the sub-tomogram average as shown in a–c respectively. g–i Slices from a sub-tomogram average density map of a different arrangement of f-trimers than (a–f). j–l Isosurfaces of g–i. m–o Slices from a sub-tomogram average density map from a third arrangement of f-trimers. p–r Isosurfaces of m–o. Density map in a–f is an average from n = 1030 sub-tomograms, n = 1246 sub-tomograms for g–l and n = 1132 sub-tomograms for m–r. 5 nm scale bar for all panels.