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Multi-Color Single-Molecule Imaging Uncovers Extensive Heterogeneity in mRNA Decoding
mRNA translation is a key step in decoding genetic information. Genetic decoding is surprisingly heterogeneous because multiple distinct polypeptides can be synthesized from a single mRNA sequence. To study translational heterogeneity, we developed the MoonTag, a fluorescence labeling system to visu...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Cell Press
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6630898/ https://www.ncbi.nlm.nih.gov/pubmed/31178119 http://dx.doi.org/10.1016/j.cell.2019.05.001 |
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author | Boersma, Sanne Khuperkar, Deepak Verhagen, Bram M.P. Sonneveld, Stijn Grimm, Jonathan B. Lavis, Luke D. Tanenbaum, Marvin E. |
author_facet | Boersma, Sanne Khuperkar, Deepak Verhagen, Bram M.P. Sonneveld, Stijn Grimm, Jonathan B. Lavis, Luke D. Tanenbaum, Marvin E. |
author_sort | Boersma, Sanne |
collection | PubMed |
description | mRNA translation is a key step in decoding genetic information. Genetic decoding is surprisingly heterogeneous because multiple distinct polypeptides can be synthesized from a single mRNA sequence. To study translational heterogeneity, we developed the MoonTag, a fluorescence labeling system to visualize translation of single mRNAs. When combined with the orthogonal SunTag system, the MoonTag enables dual readouts of translation, greatly expanding the possibilities to interrogate complex translational heterogeneity. By placing MoonTag and SunTag sequences in different translation reading frames, each driven by distinct translation start sites, start site selection of individual ribosomes can be visualized in real time. We find that start site selection is largely stochastic but that the probability of using a particular start site differs among mRNA molecules and can be dynamically regulated over time. This study provides key insights into translation start site selection heterogeneity and provides a powerful toolbox to visualize complex translation dynamics. |
format | Online Article Text |
id | pubmed-6630898 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | Cell Press |
record_format | MEDLINE/PubMed |
spelling | pubmed-66308982019-07-25 Multi-Color Single-Molecule Imaging Uncovers Extensive Heterogeneity in mRNA Decoding Boersma, Sanne Khuperkar, Deepak Verhagen, Bram M.P. Sonneveld, Stijn Grimm, Jonathan B. Lavis, Luke D. Tanenbaum, Marvin E. Cell Article mRNA translation is a key step in decoding genetic information. Genetic decoding is surprisingly heterogeneous because multiple distinct polypeptides can be synthesized from a single mRNA sequence. To study translational heterogeneity, we developed the MoonTag, a fluorescence labeling system to visualize translation of single mRNAs. When combined with the orthogonal SunTag system, the MoonTag enables dual readouts of translation, greatly expanding the possibilities to interrogate complex translational heterogeneity. By placing MoonTag and SunTag sequences in different translation reading frames, each driven by distinct translation start sites, start site selection of individual ribosomes can be visualized in real time. We find that start site selection is largely stochastic but that the probability of using a particular start site differs among mRNA molecules and can be dynamically regulated over time. This study provides key insights into translation start site selection heterogeneity and provides a powerful toolbox to visualize complex translation dynamics. Cell Press 2019-07-11 /pmc/articles/PMC6630898/ /pubmed/31178119 http://dx.doi.org/10.1016/j.cell.2019.05.001 Text en © 2019 The Author(s) http://creativecommons.org/licenses/by-nc-nd/4.0/ This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
spellingShingle | Article Boersma, Sanne Khuperkar, Deepak Verhagen, Bram M.P. Sonneveld, Stijn Grimm, Jonathan B. Lavis, Luke D. Tanenbaum, Marvin E. Multi-Color Single-Molecule Imaging Uncovers Extensive Heterogeneity in mRNA Decoding |
title | Multi-Color Single-Molecule Imaging Uncovers Extensive Heterogeneity in mRNA Decoding |
title_full | Multi-Color Single-Molecule Imaging Uncovers Extensive Heterogeneity in mRNA Decoding |
title_fullStr | Multi-Color Single-Molecule Imaging Uncovers Extensive Heterogeneity in mRNA Decoding |
title_full_unstemmed | Multi-Color Single-Molecule Imaging Uncovers Extensive Heterogeneity in mRNA Decoding |
title_short | Multi-Color Single-Molecule Imaging Uncovers Extensive Heterogeneity in mRNA Decoding |
title_sort | multi-color single-molecule imaging uncovers extensive heterogeneity in mrna decoding |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6630898/ https://www.ncbi.nlm.nih.gov/pubmed/31178119 http://dx.doi.org/10.1016/j.cell.2019.05.001 |
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