Evidence map›Paper›PMID 9488435›Full record

ArticleMolecular and cellular biology1998

Gal4p-mediated chromatin remodeling depends on binding site position in nucleosomes but does not require DNA replication.

M Xu, R T Simpson, M P Kladde

Open access · greenAbstract read
In one paragraph

Article in Molecular and cellular biology, 1998. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
2.0field-weighted citation impact, top 13% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

25 citing papers in PubMed, 49 citations in OpenAlex.

  1. Review
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  9. Review
  10. A nucleosome positioned by alpha2/Mcm1 prevents Hap1 activator binding in vivo.Biochemical and biophysical research communications · 2007
    Article
  11. Article
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  14. Targeted cytosine methylation for in vivo detection of protein-DNA interactions.Proceedings of the National Academy of Sciences of the United States of America · 2003
    Article
  15. Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors at 1 institution in 2 countries.

M XuDepartment of Biochemistry and Molecular Biology and Center for Gene Regulation, The Pennsylvania State University, University Park 16802-4500, USA.
R T Simpson
M P Kladde
Pennsylvania State University · US

Funding

CHROMATIN STRUCTURE IN LIVING CELLSR01GM052908 · NIGMS · PENNSYLVANIA STATE UNIVERSITY-UNIV PARK · PI SCHLEGEL, ROBERT A · 1995 to 2003
$1.1M
NIGMS NIH HHS GM52908NIGMS NIH HHS R01 GM052908
6 · The paper itself

Abstract

Biochemical studies have demonstrated decreased binding of various proteins to DNA in nucleosome cores as their cognate sites are moved from the edge of the nucleosome to the pseudodyad (center). However, to date no study has addressed whether this structural characteristic of nucleosomes modulates the function of a transcription factor in living cells, where processes of DNA replication and chromatin modification or remodeling could significantly affect factor binding. Using a sensitive, high-resolution methyltransferase assay, we have monitored the ability of Gal4p in vivo to interact with a nucleosome at positions that are known to be inaccessible in nucleosome cores in vitro. Gal4p efficiently bound a single cognate site (UASG) centered at 41 bp from the edge of a positioned nucleosome, perturbing chromatin structure and inducing transcription. DNA binding and chromatin perturbation accompanying this interaction also occurred in the presence of hydroxyurea, indicating that DNA replication is not necessary for Gal4p-mediated nucleosome disruption. These data extend previous studies, which demonstrated DNA replication-independent chromatin remodeling, by showing that a single dimer of Gal4p, without the benefit of cooperative interactions that occur at complex wild-type promoters, is competent for invasion of a preestablished nucleosome. When the UASG was localized at the nucleosomal pseudodyad, relative occupancy by Gal4p, nucleosome disruption, and transcriptional activation were substantially compromised. Therefore, despite the increased nucleosome binding capability of Gal4p in cells, the precise translational position of a factor binding site in one nucleosome in an array can affect the ability of a transcriptional regulator to overcome the repressive influence of chromatin.

Indexed as

ChromatinNucleic Acid ConformationSaccharomyces cerevisiae ProteinsBinding SitesDNA-Binding ProteinsDNA, FungalDNA ReplicationGene Expression Regulation, FungalNucleosomesProtein BiosynthesisTranscription FactorsYeastsChromatinDNA-Binding ProteinsDNA, FungalGAL4 protein, S cerevisiaeNucleosomesSaccharomyces cerevisiae ProteinsTranscription Factors

Identifiers

PMID9488435
PMCPMC108833
OpenAlexW1926397638

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.