Identification of Changing Ribosome Protein Compositions using Mass Spectrometry

Proteomics
Parimal SamirAndrew J Link

Abstract

The regulatory role of the ribosome in gene expression has come into sharper focus. It has been proposed that ribosomes are dynamic complexes capable of changing their protein composition in response to environmental stimuli. MS is applied to identify quantitative changes in the protein composition of S. cerevisiae 80S ribosomes in response to different environmental stimuli. Using quantitative MS, it is found that the paralog yeast ribosomal proteins RPL8A (eL8A) and RPL8B (eL8B) change their relative proportions in the 80S ribosome when yeast is switched from growth in glucose to glycerol. By using yeast genetics and polysome profiling, it is shown that yeast ribosomes containing either RPL8A or RPL8B are not functionally interchangeable. The quantitative proteomic data support the hypothesis that ribosomes are dynamic complexes that alter their composition and functional activity in response to changes in growth or environmental conditions.

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Citations

Feb 9, 2019·RNA·Max B Ferretti, Katrin Karbstein
Sep 22, 2020·Wiley Interdisciplinary Reviews. RNA·Geena Skariah, Peter K Todd
Aug 21, 2020·Proteomics·Aleksandra A Petelski, Nikolai Slavov
Aug 21, 2020·Proceedings of the National Academy of Sciences of the United States of America·Johan BjörkerothJens Nielsen
Nov 18, 2019·Trends in Immunology·Parimal Samir, Thirumala-Devi Kanneganti
Dec 12, 2019·Cell Reports·Toshiaki ShigeokaChristine E Holt
Dec 4, 2020·Nature·Benoit BriardThirumala-Devi Kanneganti
Aug 21, 2021·Chemical Reviews·Sem TamaraAlbert J R Heck
Jul 28, 2021·RNA·Joseph Georgeson, Schraga Schwartz
Nov 3, 2021·Proceedings of the National Academy of Sciences of the United States of America·Elizabeth I VinkIan Mohr

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