Genetic Analysis Connects SLX5 and SLX8 to the SUMO Pathway in Saccharomyces cerevisiae
| Autor: | Grace Marie Jones, Zheng Wang, Gregory Prelich |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
Saccharomyces cerevisiae Proteins
Transcription Genetic Ubiquitin-Protein Ligases Saccharomyces cerevisiae SUMO protein macromolecular substances Synthetic lethality Investigations medicine.disease_cause Gene Expression Regulation Fungal Genetics Transcriptional regulation medicine Gene Adenosine Triphosphatases TATA-Binding Protein Associated Factors Mutation biology DNA Helicases TATA-Box Binding Protein biology.organism_classification Protein Structure Tertiary DNA-Binding Proteins Small Ubiquitin-Related Modifier Proteins Trans-Activators Chromatin immunoprecipitation Signal Transduction Genetic screen |
| Zdroj: | Genetics. 172:1499-1509 |
| ISSN: | 1943-2631 |
| DOI: | 10.1534/genetics.105.052811 |
| Popis: | MOT1 encodes an essential ATPase that functions as a general transcriptional regulator in vivo by modulating TATA-binding protein (TBP) DNA-binding activity. Although MOT1 was originally identified both biochemically and in several genetic screens as a transcriptional repressor, a combination of subsequent genetic, chromatin immunoprecipitation, and microarray analysis suggested that MOT1 might also have an additional role in vivo as a transcriptional activator. To better understand the role(s) of MOT1 in vivo, we selected for genomic suppressors of a mot1 temperature-sensitive mutation. This selection identified mutations in SPT15 (TBP) and BUR6, both of which are clearly linked with MOT1 at the functional level. The vast majority of the suppressor mutations, however, unexpectedly occurred in six genes that encode known components of the SUMO pathway and in two other genes with unknown functions, SLX5 and SLX8. Additional results presented here, including extensive synthetic lethality observed between slx5Δ and slx8Δ and SUMO pathway mutations, suggest that SLX5 and SLX8 are new components or regulators of the SUMO pathway and that SUMO modification might have a general role in transcriptional regulation as part of the TBP regulatory network. |
| Databáze: | OpenAIRE |
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