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Article Abstract
Recent collection of high-resolution crystal structures of the 70S ribosome with mRNA and tRNA substrates enhances our knowledge of protein synthesis principles. A novel network of interactions between the ribosome in the elongation state and mRNA downstream from the A codon suggests that mRNA is stabilized and aligned at the entrance to the decoding center. The X-ray studies clarify how natural modifications of tRNA are involved in the stabilization of the codon-anticodon interactions, prevention of frame-shifting and also expansion of the decoding capacity of tRNAs. In addition, the crystal structures provide the view that tRNA in the A and P sites communicate through a protein rich environment and suggest how these tRNAs are controlled through the intersubunit bridge formed by protein L31.
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| http://dx.doi.org/10.1016/j.sbi.2010.03.002 | DOI Listing |
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