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Molecular basis of conformational change in Ins2 upon association of RNA with Ψ55S. (A) Interactions between Ins1 and Ins2 in the structure of apo-Ψ55S. (B) Interactions of Ins1 and Ins2 with RNA in the structure of Ψ55S-RNA complex. The bases of G52, G53, U54, G57, as well as nucleotide FhΨ55, do not make contact with both Ins1 and Ins2, and are therefore omitted here for clarity. The color schemes are the same as in Figure 3.
