Journal
RNA BIOLOGY
Volume 6, Issue 2, Pages 153-160Publisher
TAYLOR & FRANCIS INC
DOI: 10.4161/rna.6.2.8047
Keywords
translational repression; translation initiation; mRNA structure; non-coding RNA; regulatory protein; protein-mRNA interaction; RNA-RNA interaction
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During the past few years, our knowledge on RNA-based regulation in many organisms has tremendously increased. In bacteria, although transcriptional regulatory proteins remain key players in gene regulation, a wide variety of post-transcriptional regulatory mechanisms discovered highlights the importance of the mRNA structure in the regulation of gene expression. RNA-dependent regulation largely contributes to rapidly adapt the bacterial metabolism in response to environmental changes, stress and in establishment of virulence. Bacteria exploit the extraordinary ability of mRNA to fold into different structures in response to various signals (environmental cues, ligand binding). Induced mRNA conformational rearrangements can potentially regulate transcription, translation and mRNA stability. The present review focuses on the structures of regulatory regions of mRNA that have evolved to permit productive interactions with trans-acting regulators, such as protein or non-coding RNAs. Finally, we describe how particular properties of these regulatory complexes regulate translation initiation.
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