FIGURE 7.
Two hundred skeletons of RNAs with TL2D values between 25 and 85 nm. The 100 skeletons on the left were obtained from micrographs of yeast RNA, and the 100 on the right from STMV RNA. The bottom row shows the 10 skeletons from each sequence with the highest accepted TL2D values, which are the most extended molecules in the plane of projection. To define a length scale, the skeletons have been positioned so that their centers form a simple square lattice, with 60 nm as the distance between the centers of each nearest-neighbor pair of skeletons.