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Following termination of protein synthesis, bacterial ribosomes are split into subunits by the joint action of elongation factor G and ribosome recycling factor in the process called ribosome recycling. In this issue of Structure, Fu et al. (2016) describe visualization of transient intermediates of ribosome recycling using time-resolved cryogenic electron microscopy.
During protein synthesis, tRNA and mRNA are translocated from the A to P to E sites of the ribosome thus enabling the ribosome to translate one codon of mRNA after the other. Ribosome translocation along mRNA is induced by the universally conserved ribosome GTPase, elongation factor G (EF‐G) in bacteria and elongation factor 2 (EF‐2) in eukaryotes. Recent structural and single‐molecule studies revealed...
In this issue of Structure, Chen et al. (2015) report the use of a mixing-spraying method of time-resolved cryogenic electron microscopy, which allowed the progression of ribosomal subunit association to be visualized on the millisecond timescale.
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