PubMed · 551719
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I W Richardson. 1977. Membrane structure and passive flows.. https://doi.org/10.1016/b978-0-12-005216-5.50017-7
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Yeasts are beneficial microorganisms for human society and are utilized for academic and industrial purposes. For academic purposes, S. cerevisiae is a well-investigated model for studying eukaryotic cellular processes. For industrial purposes, S. pastorianus, which has a hybrid genome of S. cerevisiae and S. eubayanus, has been served for lager beer production. During fermentation, S. pastorianus produces ~7% of EtOH, which induces plasma membrane (PM)/cell wall stress in yeast. Therefore, S. pastorianus may experience PM stress and adapt to the self-forming environment during fermentation. However, how yeast adapts to PM stress remains unclear. Here, we investigated the temporal cellular responses of S. cerevisiae and S. pastorianus during adaptation to PM stresses by time-resolved mRNA-seq analysis. Our data showed different transcriptional phenotypes between S. cerevisiae and S. pastorianus during adaptation. The results may reflect the distinct nature of the two yeasts that have evolved in different nutritional environments. The dataset presented here would provide a promising resource for studying the characteristic nature of these differentially domesticated yeasts upon PM stresses.
HeLa cells prelabelled with [3H]lysoplatelet-activating factor (lyso-PAF) accumulated phosphatidic acid (PtdOH) when incubated in the presence of either propranolol (an inhibitor of PtdOH phosphohydrolase) or phorbol ester. In the presence of ethanol, phorbol ester but not propranolol stimulated the accumulation of phosphatidylethanol, an index of phospholipase D activity. Incubation of cells with [3H]lyso-PAF led to a rapid accumulation of label in diacylglycerol (DG) followed by a delayed accumulation in PtdOH. It is concluded that propranolol-induced PtdOH accumulation is derived from DG by DG kinase and does not involve phospholipase D.
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