Fig. 3.

The SHAPE reactivities for regions of annealing in the HIV-1 5´-UTR. SHAPE reactivities for in vitro transcribed unannealed HIV-1 5´-UTR (white), and viral RNA found in Pr- (grey), and wild type (black) viral particles are shown for sequences containing (a) nts 144 to 146, (b) nts 167 to 170, and (c) nts 182 to 199. The results shown are the averages of three readings at each nucleotide position for 5´-UTR, Pr- and wild type. The errors shown in the graph correspond to the standard deviations calculated at each nucleotide position