Research Topics
Species | Itay TiroshSummaryAffiliation: Weizmann Institute of Science Country: Israel Publications
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Publications
A genetic signature of interspecies variations in gene expressionItay Tirosh
Department of Molecular Genetics, Weizmann Institute of Science, 76100 Rehovot, Israel
Nat Genet 38:830-4. 2006..TATA-dependent regulation may enhance the sensitivity of gene expression to genetic perturbations, thus facilitating expression divergence at particular genetic loci...
The pattern and evolution of yeast promoter bendabilityItay Tirosh
Department of Molecular Genetics, Weizmann Institute of Science, Rehovot, Israel
Trends Genet 23:318-21. 2007..Rigid DNA could influence nucleosome positioning and assist in the assembly of the transcriptional machinery at TATA-less promoters...
Transcriptional priming of cytoplasmic post-transcriptional regulationItay Tirosh
Department of Molecular Genetics, Weizmann Institute of Science, Rehovot, Israel
Transcription 2:258-62. 2011..Here, I speculate that this is a widespread mode of regulation and discuss the potential mechanisms, advantages and implications of such a regulatory strategy...
Computational verification of protein-protein interactions by orthologous co-expressionItay Tirosh
Department of Molecular Genetics, Weizmann Institute of Science, Rehovot, Israel
BMC Bioinformatics 6:40. 2005..Several methods have recently been suggested for this purpose including co-expression as a confidence measure for interacting proteins, but their performance is still quite poor...
Computational analysis of nucleosome positioningItay Tirosh
Department of Molecular Genetics, Weizmann Institute of Science, Rehovot, Israel
Methods Mol Biol 833:443-9. 2012..Potential pitfalls that may be encountered in such analysis and computational quality controls are further discussed in Subheading 3...
Widespread remodeling of mid-coding sequence nucleosomes by Isw1Itay Tirosh
Department of Molecular Genetics, Weizmann Institute of Science, Herzl Street, Rehovot 76100, Israel
Genome Biol 11:R49. 2010..While the genome-wide effect of most remodelers has not been described, recent studies in Saccharomyces cerevisiae have shown that Isw2 prevents ectopic expression of anti-sense and suppressed transcripts at gene ends...
Promoter architecture and the evolvability of gene expressionItay Tirosh
Department of Molecular Genetics, Weizmann Institute of Science, Rehovot, 76100, Israel
J Biol 8:95. 2009..Here, we discuss how these promoter properties may confer an inherent capacity for flexibility of expression...
Comparative analysis indicates regulatory neofunctionalization of yeast duplicatesItay Tirosh
Department of Molecular Genetics, Weizmann Institute of Science, Rehovot, Israel
Genome Biol 8:R50. 2007..However, functional divergence can also be attributed to changes in regulatory properties, such as protein localization or expression, which require only minor changes in gene sequence...
Chromatin regulators as capacitors of interspecies variations in gene expressionItay Tirosh
Department of Molecular Genetics, Weizmann Institute of Science, Rehovot, Israel
Mol Syst Biol 6:435. 2010..Our results support the idea that regulatory proteins serve as capacitors that buffer gene expression against hidden genetic variability...
A yeast hybrid provides insight into the evolution of gene expression regulationItay Tirosh
Department of Molecular Genetics, Weizmann Institute of Science, Rehovot, Israel
Science 324:659-62. 2009..These results provide insights on the regulatory changes in cis and trans during the divergence of species and upon hybridization...
On the relation between promoter divergence and gene expression evolutionItay Tirosh
Department of Molecular Genetics, Weizmann Institute of Science, Rehovot, Israel
Mol Syst Biol 4:159. 2008..Our analysis emphasizes the flexibility of promoter structure, and highlights the interplay between specific binding sites and general chromatin structure in the control of gene expression...
Inferring regulatory mechanisms from patterns of evolutionary divergenceItay Tirosh
Department of Molecular Genetics, Weizmann Institute of Science, Rehovot, Israel
Mol Syst Biol 7:530. 2011..We review examples of this concept using yeast as a model system, and highlight a hybrid-based approach that is highly instrumental in this analysis...
Two strategies for gene regulation by promoter nucleosomesItay Tirosh
Department of Molecular Genetics, Weizmann Institute of Science, Rehovot 76100, Israel
Genome Res 18:1084-91. 2008..Analysis of nucleosome positioning in human promoters reproduces the main observations. Our results suggest two distinct strategies for gene regulation by chromatin, which are selectively employed by different genes...
Divergence of nucleosome positioning between two closely related yeast species: genetic basis and functional consequencesItay Tirosh
Department of Molecular Genetics, Weizmann Institute of Science, Rehovot, Israel
Mol Syst Biol 6:365. 2010..Our results provide evolutionary insights to the genetic determinants and regulatory function of nucleosome positioning...
Coupled evolution of transcription and mRNA degradationMally Dori-Bachash
Department of Molecular Genetics, Weizmann Institute of Science, Rehovot, Israel
PLoS Biol 9:e1001106. 2011..These results suggest that an opposite coupling between the regulation of transcription and that of mRNA degradation has shaped the evolution of gene regulation in yeast...
Evolution of nucleosome occupancy: conservation of global properties and divergence of gene-specific patternsKyle Tsui
Donnelly Centre for Cellular and Biomolecular Research, 160 College Street, Toronto, Ontario M5S 3E1, Canada
Mol Cell Biol 31:4348-55. 2011..Thus, while some evolutionary changes in nucleosome occupancy contribute to gene expression divergence, nucleosome occupancy often diverges extensively with apparently little impact on gene expression...
Extensive divergence of yeast stress responses through transitions between induced and constitutive activationItay Tirosh
Department of Molecular Genetics, Weizmann Institute of Science, Rehovot 76100, Israel
Proc Natl Acad Sci U S A 108:16693-8. 2011..e., biological noise). Frequent compensatory changes and biological noise may explain how diverged expression responses support similar physiological responses...
Comparative biology: beyond sequence analysisItay Tirosh
Department of Molecular Genetics, Weizmann Institute of Science, 76100 Rehovot, Israel
Curr Opin Biotechnol 18:371-7. 2007..Here we review recent works applying comparative analysis to large-scale gene expression datasets and discuss the central principles and challenges of such approaches...
The histone H2B-specific ubiquitin ligase RNF20/hBRE1 acts as a putative tumor suppressor through selective regulation of gene expressionEfrat Shema
Department of Molecular Cell Biology, The Weizmann Institute of Science, Rehovot 76100, Israel
Genes Dev 22:2664-76. 2008..Furthermore, frequent RNF20 promoter hypermethylation was observed in tumors. RNF20 may thus be a putative tumor suppressor, acting through selective regulation of a distinct subset of genes...
Evolution of gene sequence and gene expression are not correlated in yeastItay Tirosh
Department of Molecular Genetics, Weizmann Institute of Science, Rehovot 76100, Israel
Trends Genet 24:109-13. 2008..Based on these findings, we discuss the possibilities of neutral evolution of gene expression and of different modes of evolution in unicellular versus multicellular organisms...
Autocorrelation analysis reveals widespread spatial biases in microarray experimentsAmnon Koren
Department of Molecular Genetics, Weizmann Institute of Science, Rehovot, Israel
BMC Genomics 8:164. 2007..A particular source of false data has been described, in which non-random placement of gene probes on the microarray surface is associated with spurious correlations between genes...
Promoter nucleosome organization shapes the evolution of gene expressionDalia Rosin
Department of Molecular Genetics, Weizmann Institute of Science, Rehovot, Israel
PLoS Genet 8:e1002579. 2012..Our results suggest that promoter organization constrains the early evolutionary dynamics and in this way biases the path of long-term evolution...
