Cited by 665Genomics and Chromatin DynamicsRNA Research and SplicingGene Regulatory Network Analysis

In vivo dynamics of RNA polymerase II transcription

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Darzacq, Xavier, Shav-Tal, Yaron, de Turris, Valeria, Brody, Yehuda, Shenoy, Shailesh M, Phair, Robert D, Singer, Robert H·2007·Nature Structural & Molecular Biology

Abstract

We imaged transcription in living cells using a locus-specific reporter system, which allowed precise, single-cell kinetic measurements of promoter binding, initiation and elongation. Photobleaching of fluorescent RNA polymerase II revealed several kinetically distinct populations of the enzyme interacting with a specific gene. Photobleaching and photoactivation of fluorescent MS2 proteins used to label nascent messenger RNAs provided sensitive elongation measurements. A mechanistic kinetic model that fits our data was validated using specific inhibitors. Polymerases elongated at 4.3 kilobases min(-1), much faster than previously documented, and entered a paused state for unexpectedly long times. Transcription onset was inefficient, with only 1% of polymerase-gene interactions leading to completion of an mRNA. Our systems approach, quantifying both polymerase and mRNA kinetics on a defined DNA template in vivo with high temporal resolution, opens new avenues for studying regulation of transcriptional processes in vivo.

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Crossref · 10.1038/nsmb1280

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  • RNA Pol II speed in live cells was estimated to range from 0.6 kb/min to 4.3 kb/min by FRAP experiments using MS2 fluorescent proteins.

    “RNA Pol II speed in live cells was estimated to range from 0.6 kb/min to 4.3 kb/min by fluorescence recovery after photobleaching (FRAP) experiments using MS2 fluorescent proteins to label nascent MS2 repeat‐containing RNAs (Boireau et al, 2007; Darzacq et al, 2007; Ben‐Ari et al, 2010; Yunger et al, 2010; Brody et al, 2011; Maiuri et al, 2011; Muramoto et al, 2012; Corrigan et al, 2016).”

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Authors
Darzacq, X., Shav-Tal, Y., de Turris, V., Brody, Y., Shenoy, S. M., Phair, R. D., & Singer, R. H.
Affiliations
  • Albert Einstein College of Medicine (US)
  • Bar-Ilan University (IL)
Corresponding author
Singer, Robert H
Venue
Nature Structural & Molecular Biology
Published
2007-08-05
Volume
14
Issue
9
Pages
796-806
ISSN
  • 1545-9985 (ISSN-L)
  • 1545-9993
OpenAlex
W1964259728
Cited by
665
References
62
Citations by year
2026: 16 · 2025: 22 · 2024: 28 · 2023: 22 · 2022: 28 · 2021: 35 · 2020: 45 · 2019: 35 · 2018: 35 · 2017: 22 · 2016: 34 · 2015: 34 · 2014: 48 · 2013: 43 · 2012: 39
FWCI
16.81
Type
journal article
Language
en
Open access
Locations
  • Nature Structural & Molecular Biology (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Institute of Biomedical Imaging and Bioengineering (R01EB002060, EB-002060)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Chromatin Dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA Research and Splicing
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gene Regulatory Network Analysis
Keywords
RNA polymerase II, transcription kinetics, transcription initiation, transcription elongation, promoter binding, transcriptional pausing, nascent mRNA, photoactivation, photobleaching, single-cell imaging, kinetic model, transcriptional regulation
MeSH terms
Base Sequence, Humans, Kinetics, Phosphorylation, Photochemistry, RNA Polymerase II, Transcription, Genetic, In Situ Hybridization, Fluorescence, DNA Primers, Cell Line, Tumor

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