ArticleJournal of molecular biology2020
Polysomes Bypass a 50-Nucleotide Coding Gap Less Efficiently Than Monosomes Due to Attenuation of a 5' mRNA Stem-Loop and Enhanced Drop-off.
Article in Journal of molecular biology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
6 citing papers in PubMed, 9 citations in OpenAlex.
- Comprehensive analysis of yeast +1 ribosomal frameshifting unveils a novel stimulator supporting two distinct frameshifting mechanisms.Nucleic acids research · 2025Article
- Kinetics of programmed and spontaneous ribosome sliding along the mRNA.Nucleic acids research · 2024Article
- Article
- Identifying Small Open Reading Frames in Prokaryotes with Ribosome Profiling.Journal of bacteriology · 2022Article
- Article
- Simultaneous ribosome profiling of hundreds of microbes from the human microbiome.Nature protocols · 2021Review
Corrections and comments
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Authors and funding
13 authors at 6 institutions in 4 countries.
Funding
Abstract
Efficient translational bypassing of a 50-nt non-coding gap in a phage T4 topoisomerase subunit gene (gp60) requires several recoding signals. Here we investigate the function of the mRNA stem-loop 5' of the take-off codon, as well as the importance of ribosome loading density on the mRNA for efficient bypassing. We show that polysomes are less efficient at mediating bypassing than monosomes, both in vitro and in vivo, due to their preventing formation of a stem-loop 5' of the take-off codon and allowing greater peptidyl-tRNA drop off. A ribosome profiling analysis of phage T4-infected Escherichia coli yielded protected mRNA fragments within the normal size range derived from ribosomes stalled at the take-off codon. However, ribosomes at this position also yielded some 53-nucleotide fragments, 16 longer. These were due to protection of the nucleotides that form the 5' stem-loop. NMR shows that the 5' stem-loop is highly dynamic. The importance of different nucleotides in the 5' stem-loop is revealed by mutagenesis studies. These data highlight the significance of the 5' stem-loop for the 50-nt bypassing and further enhance appreciation of relevance of the extent of ribosome loading for recoding.
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Registered trials
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