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Author Spotlight: An Integrated Workflow to Study the Promoter-Centric Spatio-Temporal Genome Architecture in Scarce Cell Populations
Published on: April 21, 2023
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Transcription factor localization dynamics and DNA binding drive distinct promoter interpretations
Kieran Sweeney1, Megan N McClean2
1Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI, USA.
Cell Reports
|April 23, 2023
Summary
Cells decode transcription factor (TF) localization dynamics to control gene expression. This study shows how TF DNA binding affinity impacts this decoding, revealing promoter-specific regulatory mechanisms.
Area of Science:
- Molecular Biology
- Genetics
- Biochemistry
Background:
- Environmental cues are translated into gene expression through transcription factor (TF) dynamics.
- TF activity is regulated by nuclear localization and DNA binding.
- Previous research focused on TF nuclear localization dynamics.
Purpose of the Study:
- To investigate how changes in TF DNA binding affinity affect promoter decoding of TF localization dynamics.
- To understand the interplay between TF localization and DNA binding in gene expression control.
Main Methods:
- Utilized light-controlled mutants of the yeast transcription factor Msn2.
- Analyzed promoter responses to Msn2 localization dynamics under varying DNA binding affinities.
Main Results:
- Yeast promoters directly decode Msn2's light-controlled localization dynamics.
- The impact of altered Msn2 DNA binding affinity on promoter decoding is promoter-specific.
Conclusions:
- Cells can finely tune gene expression by coordinating TF localization and DNA binding.
- Promoter-dependent regulation offers a sophisticated mechanism for cellular response to stimuli.
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