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Direct measurements...
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Seefeldt, A. CarolinUppsala universitet,Molekylär systembiologi
(author)
Direct measurements of erythromycin’s effect on protein synthesis kinetics in living bacterial cells
- Article/chapterEnglish2021
Publisher, publication year, extent ...
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Elsevier,2021
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electronicrdacarrier
Numbers
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LIBRIS-ID:oai:DiVA.org:uu-417623
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https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-417623URI
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https://doi.org/10.1016/j.jmb.2021.166942DOI
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Language:English
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Summary in:English
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
Notes
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Macrolide antibiotics, such as erythromycin, bind to the nascent peptide exit tunnel (NPET) of the bacterial ribosome and modulate protein synthesis depending on the nascent peptide sequence. Whereas in vitro biochemical and structural methods have been instrumental in dissecting and explaining the molecular details of macrolide-induced peptidyl-tRNA drop-off and ribosome stalling, the dynamic effects of the drugs on ongoing protein synthesis inside live bacterial cells are far less explored. In the present study, we used single-particle tracking of dye-labeled tRNAs to study the kinetics of mRNA translation in the presence of erythromycin, directly inside live Escherichia coli cells. In erythromycin-treated cells, we find that the dwells of elongator tRNA(Phe) on ribosomes extend significantly, but they occur much more seldom. In contrast, the drug barely affects the ribosome binding events of the initiator tRNA(fMet). By overexpressing specific short peptides, we further find context-specific ribosome binding dynamics of tRNA(Phe), underscoring the complexity of erythromycin's effect on protein synthesis in bacterial cells.
Subject headings and genre
Added entries (persons, corporate bodies, meetings, titles ...)
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Aguirre Rivera, Javier,1989-Uppsala universitet,Molekylär systembiologi(Swepub:uu)javag704
(author)
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Johansson, MagnusUppsala universitet,Molekylär systembiologi(Swepub:uu)majoh087
(author)
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Uppsala universitetMolekylär systembiologi
(creator_code:org_t)
Related titles
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In:Journal of Molecular Biology: Elsevier433:100022-28361089-8638
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