Cited by 183Chromatin Remodeling and CancerGenomics and Chromatin DynamicsFungal and yeast genetics research

Transcription Activator Interactions with Multiple SWI/SNF Subunits

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Neely, Kristen E., Hassan, Ahmed H., Brown, Christine E., Howe, LeAnn, Workman, Jerry L.·2002·Molecular and Cellular Biology

Abstract

We have previously shown that the yeast SWI/SNF complex stimulates in vitro transcription from chromatin templates in an ATP-dependent manner. SWI/SNF function in this regard requires the presence of an activator with which it can interact directly, linking activator recruitment of SWI/SNF to transcriptional stimulation. In this study, we determine the SWI/SNF subunits that mediate its interaction with activators. Using a photo-cross-linking label transfer strategy, we show that the Snf5, Swi1, and Swi2/Snf2 subunits are contacted by the yeast acidic activators, Gcn4 and Hap4, in the context of the intact native SWI/SNF complex. In addition, we show that the same three subunits can interact individually with acidic activation domains, indicating that each subunit contributes to binding activators. Furthermore, mutations that reduce the activation potential of these activators also diminish its interaction with each of these SWI/SNF subunits. Thus, three distinct subunits of the SWI/SNF complex contribute to its interactions with activation domains.

Integrity signals

Registry

Crossref · 10.1128/mcb.22.6.1615-1625.2002

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  • The Simple Competition model does not completely fit the BAF inhibitor data, suggesting incomplete BAF inhibition, redundant chromatin remodelers that can compensate for loss of BAF, or additional mechanisms independent of chromatin remodelers.

    “The 2 parameter Simple Competition model does not completely fit these data (Fig. S3L), suggesting incomplete BAF inhibition, redundant chromatin remodelers that can compensate for loss of BAF25, or that activation domains augment TF binding through additional mechanisms independent of chromatin remodelers”
  • Recruitment of SWI/SNF to promoters can be mediated through sequence-specific transcription factors including Gcn4, Pho4, Swi5 and Hap4.

    “Recruitment of SWI/SNF to promoters can be mediated through sequence-specific transcription factors including Gcn4, Pho4, Swi5 and Hap441,42.”

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Authors
Neely, K. E., Hassan, A. H., Brown, C. E., Howe, L., & Workman, J. L.
Affiliations
Pennsylvania State University (US)
Venue
Molecular and Cellular Biology
Published
2002-03-01
Volume
22
Issue
6
Pages
1615-1625
ISSN
  • 0270-7306 (ISSN-L)
  • 1098-5549
OpenAlex
W2080918768
Cited by
183
References
78
Citations by year
2026: 2 · 2025: 1 · 2024: 7 · 2023: 3 · 2022: 3 · 2021: 1 · 2020: 7 · 2019: 7 · 2018: 3 · 2017: 4 · 2016: 8 · 2015: 3 · 2014: 9 · 2013: 4 · 2012: 9
FWCI
5.58
Type
journal article
Language
en
Open access
Locations
  • Molecular and Cellular Biology (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Howard Hughes Medical Institute
  • Leukemia and Lymphoma Society
  • University of Pennsylvania
  • Pennsylvania State University
  • Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung
  • National Institutes of Health (5r37gm047867-17)
  • National Institute of General Medical Sciences (R37 GM 47867, R37-GM-047867)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Chromatin Remodeling and Cancer
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Chromatin Dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Fungal and yeast genetics research
Keywords
SWI/SNF complex, transcriptional activator, SMARCB1, Swi1, GCN4, HAP4, acidic activation domain, chromatin remodeling, transcriptional activation, Saccharomyces cerevisiae, protein-protein interaction
MeSH terms
SMARCB1 Protein, Acids, Adenosine Triphosphatases, Chromosomal Proteins, Non-Histone, Cross-Linking Reagents, DNA-Binding Proteins, Fungal Proteins, Nuclear Proteins, Photochemistry, Protein Binding, Protein Kinases, Recombinant Proteins, Saccharomyces cerevisiae, Transcription Factors, Transcriptional Activation, Protein Serine-Threonine Kinases, Protein Structure, Tertiary, Cell Cycle Proteins, Protein Subunits, CCAAT-Binding Factor, Saccharomyces cerevisiae Proteins, Macromolecular Substances

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