ArticleBMC molecular biology2007
Translation initiation region sequence preferences in Escherichia coli.
Article in BMC molecular biology, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 58 papers.
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58 citing papers in PubMed, 113 citations in OpenAlex.
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- The diversity of Shine-Dalgarno sequences sheds light on the evolution of translation initiation.RNA biology · 2021Review
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- Identification of Translation Start Sites in Bacterial Genomes.Methods in molecular biology (Clifton, N.J.) · 2021Article
- AU richness within the 5' coding region of theHeliyon · 2020Article
- Influence of the spacer region between the Shine-Dalgarno box and the start codon for fine-tuning of the translation efficiency in Escherichia coli.Microbial biotechnology · 2020Article
- The Ribosome as a Switchboard for Bacterial Stress Response.Frontiers in microbiology · 2020Review
- Article
- Translational coupling via termination-reinitiation in archaea and bacteria.Nature communications · 2019Article
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Authors and funding
4 authors at 1 institution in 1 country.
Funding
Abstract
backgroundThe mRNA translation initiation region (TIR) comprises the initiator codon, Shine-Dalgarno (SD) sequence and translational enhancers. Probably the most abundant class of enhancers contains A/U-rich sequences. We have tested the influence of SD sequence length and the presence of enhancers on the efficiency of translation initiation.
resultsWe found that during bacterial growth at 37 degrees C, a six-nucleotide SD (AGGAGG) is more efficient than shorter or longer sequences. The A/U-rich enhancer contributes strongly to the efficiency of initiation, having the greatest stimulatory effect in the exponential growth phase of the bacteria. The SD sequences and the A/U-rich enhancer stimulate translation co-operatively: strong SDs are stimulated by the enhancer much more than weak SDs. The bacterial growth rate does not have a major influence on the TIR selection pattern. On the other hand, temperature affects the TIR preference pattern: shorter SD sequences are preferred at lower growth temperatures. We also performed an in silico analysis of the TIRs in all E. coli mRNAs. The base pairing potential of the SD sequences does not correlate with the codon adaptation index, which is used as an estimate of gene expression level.
conclusionIn E. coli the SD selection preferences are influenced by the growth temperature and not influenced by the growth rate. The A/U rich enhancers stimulate translation considerably by acting co-operatively with the SD sequences.
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