MAP kinase signaling induces nuclear reorganization in budding yeast

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MAP kinase signaling induces nuclear reorganization in budding yeast

BACKGROUND During the mating pheromone response in budding yeast, activation of a mitogen-activated protein kinase (MAP kinase) cascade results in well-characterized changes in cytoskeletal organization and gene expression. Spatial reorganization of genes within the nucleus has been documented during cell-type differentiation in mammalian cells, but no information was previously available on th...

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Signal transduction by MAP kinase cascades in budding yeast.

Budding yeast contain at least four distinct MAPK (mitogen activated protein kinase) cascades that transduce a variety of intracellular signals: mating-pheromone response, pseudohyphal/invasive growth, cell wall integrity, and high osmolarity adaptation. Although each MAPK cascade contains a conserved set of three protein kinases, the upstream activation mechanisms for these cascades are divers...

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Stable Pseudohyphal Growth in Budding Yeast Induced by Synergism between Septin Defects and Altered MAP-kinase Signaling

Upon nutrient limitation, budding yeasts like Saccharomyces cerevisiae can be induced to adopt alternate filament-like growth patterns called diploid pseudohyphal or invasive haploid growth. Here, we report a novel constitutive pseudohyphal growth state, sharing some characteristics with classic forms of filamentous growth, but differing in crucial aspects of morphology, growth conditions and g...

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Rck2, a member of the calmodulin-protein kinase family, links protein synthesis to high osmolarity MAP kinase signaling in budding yeast.

Rck2, a yeast Ser/Thr protein kinase homologous to mammalian calmodulin kinases, requires phosphorylation for activation. We provide evidence that in budding yeast, this step can be executed by the osmostress-activated mitogen-activated protein kinase Hog1. Rck2 phosphorylation was transiently increased during osmostress or in mutants with a hyperactive high osmolarity glycerol (HOG) pathway. T...

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Chromatin boundary activities (BAs) were identified in Saccharomyces cerevisiae by genetic screening. Such BAs bound to sites flanking a reporter gene establish a nonsilenced domain within the silent mating-type locus HML. Interestingly, various proteins involved in nuclear-cytoplasmic traffic, such as exportins Cse1p, Mex67p, and Los1p, exhibit a robust BA. Genetic studies, immunolocalization,...

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ژورنال

عنوان ژورنال: Current Biology

سال: 2000

ISSN: 0960-9822

DOI: 10.1016/s0960-9822(00)00413-9