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Trans-translation exposed: understanding the structures and functions of tmRNA-SmpB.

Abstract : Ribosome stalling is a serious issue for cell survival. In bacteria, the primary rescue system is trans-translation, performed by tmRNA and its protein partner small protein B (SmpB). Since its discovery almost 20 years ago, biochemical, genetic, and structural studies have paved the way to a better understanding of how this sophisticated process takes place at the cellular and molecular levels. Here we describe the molecular details of trans-translation, with special mention of recent cryo-electron microscopy and crystal structures that have helped explain how the huge tmRNA-SmpB complex targets and delivers stalled ribosomes without interfering with canonical translation.
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Contributor : Marie Lecoupe-Grainville <>
Submitted on : Wednesday, April 30, 2014 - 4:18:58 PM
Last modification on : Thursday, January 14, 2021 - 11:22:25 AM


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Emmanuel Giudice, Kevin Macé, Reynald Gillet. Trans-translation exposed: understanding the structures and functions of tmRNA-SmpB.. Frontiers in Microbiology, Frontiers Media, 2014, 5, pp.113. ⟨10.3389/fmicb.2014.00113⟩. ⟨hal-00985931⟩



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