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Andrau JC, et al.  (2006) Genome-wide location of the coactivator mediator: Binding without activation and transient Cdk8 interaction on DNA. Mol Cell 22(2):179-92

Abstract: Mediator is a general coactivator of RNA polymerase II (Pol II) transcription. Genomic location analyses of different Mediator subunits indicate a uniformly composed core complex upstream of active genes but unexpectedly also upstream of inactive genes and on the coding regions of some highly active genes. The repressive Cdk8 submodule is associated with core Mediator at all sites but with a lower degree of occupancy, indicating transient interaction, regardless of promoter activity. This suggests gene-specific regulation of Cdk8 activity, rather than regulated Cdk8 recruitment. Mediator presence is not necessarily linked to transcription. This goes beyond Cdk8-repressed genes, indicating that Mediator can mark some regulatory regions ahead of additional signals. Overlap with intergenic Pol II location in stationary phase points to a role as a binding platform for inactive Pol II during quiescence. These results shed light on Cdk8 repression, suggest additional roles for Mediator, and query models of recruitment-coupled regulation.

Status: Published Type: Journal Article PubMed ID: 16630888

Topics addressed in this paper

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Topics Topics not linked to Genes Genes linked to topics (#1 - 10 )
CCW12 FBA1 GAL11 ILV5 MED7 PGD1 PMA1 RGR1 ROX1 ROX3
Additional Literature blue ball blue ball blue ball
Cell Cycle Phase Involved blue ball blue ball blue ball blue ball blue ball
DNA/RNA Sequence Features blue ball blue ball blue ball blue ball blue ball
Genomic co-immunoprecipitation study blue ball blue ball blue ball blue ball blue ball
Omics yg ball
Primary Literature blue ball blue ball blue ball blue ball blue ball blue ball blue ball
Protein-Nucleic Acid Interactions blue ball blue ball blue ball blue ball blue ball
Regulatory Role blue ball blue ball blue ball blue ball blue ball
RNA Levels and Processing blue ball blue ball
Strains/Constructs blue ball blue ball blue ball blue ball blue ball
Techniques and Reagents blue ball blue ball blue ball blue ball blue ball
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Topics Genes linked to topics (#11 - 15 )
SRB4 SSN3 SSN8 ZRT1 ZRT2
Additional Literature blue ball blue ball
Cell Cycle Phase Involved blue ball blue ball
DNA/RNA Sequence Features blue ball blue ball
Genomic co-immunoprecipitation study blue ball blue ball blue ball
Primary Literature blue ball blue ball blue ball
Protein-Nucleic Acid Interactions blue ball blue ball blue ball
Regulatory Role blue ball blue ball blue ball
Strains/Constructs blue ball blue ball blue ball
Techniques and Reagents blue ball blue ball blue ball
Transcription blue ball blue ball

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