ArticleBMC genomics2008
Global mRNA expression analysis in myosin II deficient strains of Saccharomyces cerevisiae reveals an impairment of cell integrity functions.
Article in BMC genomics, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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Who cites it
11 citing papers in PubMed, 17 citations in OpenAlex.
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- Protein Interactions of the Mechanosensory Proteins Wsc2 and Wsc3 for Stress Resistance inG3 (Bethesda, Md.) · 2020Article
- Distinct roles of Rho1, Cdc42, and Cyk3 in septum formation and abscission during yeast cytokinesis.The Journal of cell biology · 2013Article
- Functional and genetic interactions of TOR in the budding yeast Saccharomyces cerevisiae with myosin type II-deficiency (myo1Δ).BMC cell biology · 2012Article
- Dosage suppression genetic interaction networks enhance functional wiring diagrams of the cell.Nature biotechnology · 2011Article
- Article
- VDAC contributes to mRNA levels in Saccharomyces cerevisiae cells by the intracellular reduction/oxidation state dependent and independent mechanisms.Journal of bioenergetics and biomembranes · 2010Article
- Antifungal research strategies aiming for new targets.Puerto Rico health sciences journal · 2009Review
- Differential gene expression signatures for cell wall integrity found in chitin synthase II (chs2Delta) and myosin II (myo1Delta) deficient cytokinesis mutants of Saccharomyces cerevisiae.BMC research notes · 2009Article
- Mechanisms for concentrating Rho1 during cytokinesis.Genes & development · 2009Article
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Authors and funding
6 authors at 5 institutions in 2 countries.
Funding
Abstract
backgroundThe Saccharomyces cerevisiae MYO1 gene encodes the myosin II heavy chain (Myo1p), a protein required for normal cytokinesis in budding yeast. Myo1p deficiency in yeast (myo1Delta) causes a cell separation defect characterized by the formation of attached cells, yet it also causes abnormal budding patterns, formation of enlarged and elongated cells, increased osmotic sensitivity, delocalized chitin deposition, increased chitin synthesis, and hypersensitivity to the chitin synthase III inhibitor Nikkomycin Z. To determine how differential expression of genes is related to these diverse cell wall phenotypes, we analyzed the global mRNA expression profile of myo1Delta strains.
resultsGlobal mRNA expression profiles of myo1Delta strains and their corresponding wild type controls were obtained by hybridization to yeast oligonucleotide microarrays. Results for selected genes were confirmed by real time RT-PCR. A total of 547 differentially expressed genes (p < or = 0.01) were identified with 263 up regulated and 284 down regulated genes in the myo1Delta strains. Gene set enrichment analysis revealed the significant over-representation of genes in the protein biosynthesis and stress response categories. The SLT2/MPK1 gene was up regulated in the microarray, and a myo1Deltaslt2Delta double mutant was non-viable. Overexpression of ribosomal protein genes RPL30 and RPS31 suppressed the hypersensitivity to Nikkomycin Z and increased the levels of phosphorylated Slt2p in myo1Delta strains. Increased levels of phosphorylated Slt2p were also observed in wild type strains under these conditions.
conclusionFollowing this analysis of global mRNA expression in yeast myo1Delta strains, we conclude that 547 genes were differentially regulated in myo1Delta strains and that the stress response and protein biosynthesis gene categories were coordinately regulated in this mutant. The SLT2/MPK1 gene was confirmed to be essential for myo1Delta strain viability, supporting that the up regulated stress response genes are regulated by the PKC1 cell integrity pathway. Suppression of Nikkomycin Z hypersensitivity together with Slt2p phosphorylation was caused by the overexpression of ribosomal protein genes RPL30 and RPS31. These ribosomal protein mRNAs were down regulated in the myo1Delta arrays, suggesting that down regulation of ribosomal biogenesis may affect cell integrity in myo1Delta strains.
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