ArticleBiochemical and biophysical research communications2013
Translational efficiency of rpoS mRNA from Borrelia burgdorferi: effects of the length and sequence of the mRNA leader region.
Article in Biochemical and biophysical research communications, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- Global Profiling of Lysine Acetylation inFrontiers in microbiology · 2018Article
- Article
- Thermal control of virulence factors in bacteria: a hot topic.Virulence · 2014Review
- Role for cis-acting RNA sequences in the temperature-dependent expression of the multiadhesive lig proteins in Leptospira interrogans.Journal of bacteriology · 2013Article
- An inverted repeat in the ospC operator is required for induction in Borrelia burgdorferi.PloS one · 2013Article
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6 authors.
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Abstract
Regulation of the enzootic cycle in Borrelia burgdorferi requires a shift to the RNA polymerase alternative sigma factor, RpoS. We used in vitro and in vivo assays to assess the relative importance of the putative Shine-Dalgarno sequence and its sequestration for the translational efficiency of rpoS. We created mutant leader regions in which we either removed the Shine-Dalgarno sequence, disrupted the secondary structure or both. Binding assays and toeprint assays demonstrated that both the presence and the availability of the Shine-Dalgarno sequence are important to the efficiency and specificity of ribosome binding. Adding a DsrABb mimic in the form of a single-stranded DNA oligonucleotide increased the level and specificity of binding ribosomes to the transcript with an extended leader, presumably by making the Shine-Dalgarno sequence available for binding. In in vivo assays we confirmed that the Shine-Dalgarno sequence must be both present and un-sequestered in order for translation to proceed efficiently. The longer transcript was significantly better translated in B. burgdorferi at 37 °C than at 26 °C, lending support to the hypothesis that DsrABb acts as a temperature-dependent stimulator of translation. These studies demonstrate that translational regulation of gene expression in B. burgdorferi may be an important mechanism for responding to environmental signals important in the enzootic cycle.
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