FIGURE 3.

THG73 mutations and tRNAs studied. Circled positions on THG73 correspond to the knob mutations from Liu et al. (1997), where K1 is C3-G70, K2 is C10-G25, and K3 is G17. The boxed region on THG73 corresponds to the second to fourth positions of the acceptor stem (mutations are shown in gray italics in the right box). Note THG73 K1 and TQAS-3 are the same mutation. Other tRNAs studied are shown at the bottom with only the second to fourth positions of the acceptor stem shown. ENAS and TQAS contain the same nucleotides at these positions.