Identifying cooperativity among transcription factors controlling the cell cycle in yeast

Banerjee, N., Zhang, M. Q. (December 2003) Identifying cooperativity among transcription factors controlling the cell cycle in yeast. Nucleic Acids Research, 31 (23). pp. 7024-7031. ISSN 0305-1048

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URL: http://www.ncbi.nlm.nih.gov/pubmed/14627835
DOI: 10.1093/nar/gkg894

Abstract

Transcription regulation in eukaryotes is known to occur through the coordinated action of multiple transcription factors (TFs). Recently, a few genome-wide transcription studies have begun to explore the combinatorial nature of TF interactions. We propose a novel approach that reveals how multiple TFs cooperate to regulate transcription in the yeast cell cycle. Our method integrates genome-wide gene expression data and chromatin immunoprecipitation (ChIP-chip) data to discover more biologically relevant synergistic interactions between different TFs and their target genes than previous studies. Given any pair of TFs A and B, we define a novel measure of cooperativity between the two TFs based on the expression patterns of sets of target genes of only A, only B, and both A and B. If the cooperativity measure is significant then there is reason to postulate that the presence of both TFs is needed to influence gene expression. Our results indicate that many cooperative TFs that were previously characterized experimentally indeed have high values of cooperativity measures in our analysis. In addition, we propose several novel, experimentally testable predictions of cooperative TFs that play a role in the cell cycle and other biological processes. Many of them hold interesting clues for cross talk between the cell cycle and other processes including metabolism, stress response and pseudohyphal differentiation. Finally, we have created a web tool where researchers can explore the exhaustive list of cooperative TFs and survey the graphical representation of the target genes' expression profiles. The interface includes a tool to dynamically draw a TF cooperativity network of 113 TFs with user-defined significance levels. This study is an example of how systematic combination of diverse data types along with new functional genomic approaches can provide a rigorous platform to map TF interactions more efficiently.

Item Type: Paper
Uncontrolled Keywords: SKN7 RESPONSE REGULATOR HEAT-SHOCK FACTOR SACCHAROMYCES-CEREVISIAE IN-VIVO S-PHASE PROTEIN GENES TRANSITION NETWORKS STRESS
Subjects: bioinformatics > genomics and proteomics > genetics & nucleic acid processing
bioinformatics > genomics and proteomics
bioinformatics > genomics and proteomics > genetics & nucleic acid processing > protein structure, function, modification
bioinformatics > genomics and proteomics > genetics & nucleic acid processing > protein structure, function, modification > protein types
bioinformatics > genomics and proteomics > genetics & nucleic acid processing > protein structure, function, modification > protein types > transcription factor
organism description > yeast
CSHL Authors:
Communities: CSHL labs > Zhang lab
Depositing User: Matt Covey
Date: December 2003
Date Deposited: 01 Apr 2013 18:48
Last Modified: 01 Apr 2013 18:48
PMCID: PMC290262
Related URLs:
URI: http://repository.cshl.edu/id/eprint/28011

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