The distinct translational landscapes of gram-negative Salmonella and gram-positive Listeria.
The distinct translational landscapes of gram-negative Salmonella and gram-positive Listeria.
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DOI:
10.1038/s41467-023-43759-1
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发表时间:
2023-12-09
影响因子:
16.6
通讯作者:
Chung, Betty Y. -W.
中科院分区:
文献类型:
--
作者:
Bryant, Owain J.;Lastovka, Filip;Powell, Jessica;Chung, Betty Y. -W.
Translational control in pathogenic bacteria is fundamental to gene expression and affects virulence and other infection phenotypes. We used an enhanced ribosome profiling protocol coupled with parallel transcriptomics to capture accurately the global translatome of two evolutionarily distant pathogenic bacteria—the Gram-negative bacterium Salmonella and the Gram-positive bacterium Listeria. We find that the two bacteria use different mechanisms to translationally regulate protein synthesis. In Salmonella, in addition to the expected correlation between translational efficiency and cis-regulatory features such as Shine–Dalgarno (SD) strength and RNA secondary structure around the initiation codon, our data reveal an effect of the 2nd and 3rd codons, where the presence of tandem lysine codons (AAA-AAA) enhances translation in both Salmonella and E. coli. Strikingly, none of these features are seen in efficiently translated Listeria transcripts. Instead, approximately 20% of efficiently translated Listeria genes exhibit 70 S footprints seven nt upstream of the authentic start codon, suggesting that these genes may be subject to a novel translational initiation mechanism. Our results show that SD strength is not a direct hallmark of translational efficiency in all bacteria. Instead, Listeria has evolved additional mechanisms to control gene expression level that are distinct from those utilised by Salmonella and E. coli. In this work, Bryant and Lastovka et al. utilise advanced ribosome profiling and transcriptomics techniques, to reveal distinct translation control mechanisms in Salmonella and Listeria, two highly divergent bacterial species.
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影响因子:
18
作者:
Chung BY;Deery MJ;Groen AJ;Howard J;Baulcombe DC
通讯作者:
Baulcombe DC
影响因子:
--
作者:
Andino A;Hanning I
通讯作者:
Hanning I
DOI:
10.1038/nrm4069
发表时间:
2015-11
期刊:
Nature reviews. Molecular cell biology
影响因子:
--
作者:
Brar GA;Weissman JS
通讯作者:
Weissman JS
DOI:
10.1261/rna.052548.115
发表时间:
2015-10
期刊:
RNA (New York, N.Y.)
影响因子:
--
作者:
Chung BY;Hardcastle TJ;Jones JD;Irigoyen N;Firth AE;Baulcombe DC;Brierley I
通讯作者:
Brierley I
影响因子:
9.9
作者:
Bentele, Kajetan;Saffert, Paul;Bluethgen, Nils
通讯作者:
Bluethgen, Nils