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Series GSE235000 Query DataSets for GSE235000
Status Public on Jul 27, 2023
Title Genome-scale chromatin interaction dynamic measurements for key components of the RNA Pol II general transcription machinery [ChIP-seq]
Organism Saccharomyces cerevisiae
Experiment type Genome binding/occupancy profiling by high throughput sequencing
Summary A great deal of work has revealed in structural detail the components of the machinery responsible for mRNA gene transcription initiation. These include the general transcription factors (GTFs) which assemble at promoters along with RNA Polymerase II (Pol II) to form a preinitiation complex (PIC) aided by the activities of cofactors and site-specific transcription factors (TFs). However, less well understood are the in vivo PIC assembly pathways and their kinetics, an understanding of which is vital for determining on a mechanistic level how rates of in vivo RNA synthesis are established and how cofactors and TFs impact them. We used competition ChIP to obtain genome-scale estimates of the residence times for five GTFs: TBP, TFIIA, TFIIB, TFIIE and TFIIF in budding yeast. While many GTF-chromatin interactions were short-lived (< 1 min), there were numerous interactions with residence times in the several minutes range. Sets of genes with shared function also shared similar patterns of GTF kinetic behavior. TFIIE, a GTF that enters the PIC late in the assembly process, had residence times correlated with RNA synthesis rates. The datasets and results reported here provide kinetic information for most of the Pol II-driven genes in this organism and therefore offer a rich resource for exploring the mechanistic relationships between PIC assembly, gene regulation, and transcription. The relationships between gene function and GTF dynamics suggest that shared sets of TFs tune PIC assembly kinetics to ensure appropriate levels of expression. Scripts and processed fileas are available from: https://github.com/AubleLab/PIC_competition_ChIP_scripts
 
Overall design Competition ChIP (CC) is an approach in which cells harbor two isoforms of a transcription factor of interest with distinguishable epitope tags. We engineered diploid yeast cells to constitutively express one isoform with a Myc tag under control of the endogenous promoter and with the second isoform tagged with HA and under inducible GAL promoter control. In the CC experiments, cells were shifted to galactose at time zero to induce expression of the HA-tagged competitor isoform, followed by cell culture sample collection at 10, 20, 25, 30, 40, 60, 90, and 120 min time points. We then measured the relative occupancies of the Myc- and HA-tagged species genome-wide at each time point and used the relative occupancies as input to a model that describes the competition for chromatin binding to each site and yields the site-specific residence time.
 
Contributor(s) Kupkova K, Shetty SJ, Bekiranov S, Auble DT
Citation(s) 38565951
NIH grant(s)
Grant ID Grant title Affiliation Name
R01 GM055763 Molecular Analysis of a Yeast Transcriptional Regulator UNIVERSITY OF VIRGINIA CHARLOTTESVILLE David T. Auble
Submission date Jun 14, 2023
Last update date May 24, 2024
Contact name David T. Auble
E-mail(s) auble@virginia.edu
Organization name University of Virginia
Department Biochemistry and Molecular Genetics
Street address 1307 Lane Rd
City Charlottesville
State/province VA
ZIP/Postal code 22903
Country USA
 
Platforms (2)
GPL19756 Illumina NextSeq 500 (Saccharomyces cerevisiae)
GPL31112 NextSeq 2000 (Saccharomyces cerevisiae)
Samples (95)
GSM7488336 TBP-HA, 10 min, ChIP [TBPHA10]
GSM7488337 TBP-HA, 20 min, ChIP [TBPHA20]
GSM7488338 TBP-HA, 25 min, ChIP [TBPHA25]
This SubSeries is part of SuperSeries:
GSE235002 Genome-scale chromatin interaction dynamic measurements for key components of the RNA Pol II general transcription machinery
Relations
BioProject PRJNA983860

Download family Format
SOFT formatted family file(s) SOFTHelp
MINiML formatted family file(s) MINiMLHelp
Series Matrix File(s) TXTHelp

Supplementary file Size Download File type/resource
GSE235000_ha_tbp.txt.gz 106.2 Kb (ftp)(http) TXT
GSE235000_ha_tfiia.txt.gz 86.8 Kb (ftp)(http) TXT
GSE235000_ha_tfiib.txt.gz 99.5 Kb (ftp)(http) TXT
GSE235000_ha_tfiie.txt.gz 111.4 Kb (ftp)(http) TXT
GSE235000_ha_tfiif.txt.gz 83.4 Kb (ftp)(http) TXT
GSE235000_myc_tbp.txt.gz 104.5 Kb (ftp)(http) TXT
GSE235000_myc_tfiia.txt.gz 89.7 Kb (ftp)(http) TXT
GSE235000_myc_tfiib.txt.gz 110.8 Kb (ftp)(http) TXT
GSE235000_myc_tfiie.txt.gz 111.1 Kb (ftp)(http) TXT
GSE235000_myc_tfiif.txt.gz 84.4 Kb (ftp)(http) TXT
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Raw data are available in SRA
Processed data are available on Series record

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