Figure 1From: Generation and characterization of a SIVmac239 clone corrected at four suboptimal nucleotidesIdentification of point mutations in SIVmac239WT. Schematic depiction of the SIVmac239 genome with the four mutated sites indicated. The suboptimal nucleotides are found within the 5′ LTR at the primer binding site (PBS) (1), in Pol (RT, INT) (2, 3), and Env (Rev 2nd exon, Tat 2nd exon, and gp41) (4).Back to article page