Yeast Ppz1 protein phosphatase toxicity involves the alteration of multiple cellular targets
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چکیده
منابع مشابه
Mitochondrial toxicity of indinavir, stavudine and zidovudine involves multiple cellular targets in white and brown adipocytes.
OBJECTIVE To evaluate the mechanisms of mitochondrial toxicity associated with antiretroviral treatment. METHODS 3T3-F442A white and T37i brown adipocytes were exposed to stavudine (10 microM), zidovudine (1 microM) and indinavir (10 microM), alone or in combination. Adipocyte fat content was measured with Oil Red 0 staining. Quantification of mRNA levels and of mitochondrial DNA content used...
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The Cdc14 phosphatase family antagonizes Cdk1 phosphorylation and is important for mitotic exit. To access their substrates, Cdc14 phosphatases are released from nucleolar sequestration during mitosis. Clp1/Flp1, the Schizosaccharomyces pombe Cdc14 orthologue, and Cdc14B, a mammalian orthologue, also exit the nucleolus during interphase upon DNA replication stress or damage, respectively, impli...
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Saccharomyces cerevisiae strains lacking the Ppz1 protein phosphatase are salt tolerant and display increased expression of the ENA1 Na(+)-ATPase gene, a major determinant for sodium extrusion, while cells devoid of the similar Ppz2 protein do not show these phenotypes. However, a ppz1 ppz2 mutant displays higher levels of ENA1 expression than the ppz1 strain. We show here that the increased ac...
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In all eukaryotic nuclei, the La autoantigen binds nascent RNA polymerase III transcripts, stabilizing these RNAs against exonucleases. Here we report that the La protein also functions in the assembly of certain RNA polymerase II-transcribed RNAs into RNPs. A mutation in a core protein of the spliceosomal snRNPs, Smd1p, causes yeast cells to require the La protein Lhp1p for growth at low tempe...
متن کاملpH-Responsive, posttranslational regulation of the Trk1 potassium transporter by the type 1-related Ppz1 phosphatase.
Intracellular pH and K+ concentrations must be tightly controlled because they affect many cellular activities, including cell growth and death. The mechanisms of homeostasis of H+ and K+ are only partially understood. In the yeast Saccharomyces cerevisiae, proton efflux is mediated by the Pma1 H+-ATPase. As this pump is electrogenic, the activity of the Trk1 and -2 K+ uptake system is crucial ...
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ژورنال
عنوان ژورنال: Scientific Reports
سال: 2020
ISSN: 2045-2322
DOI: 10.1038/s41598-020-72391-y