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Is Saccharomyces cerevisiae Vitamin k2?

Yeast in winemaking

Ethanol fermentation

Saccharomyces cerevisiae

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Glycolytic Functions Are Conserved in the Genome of the Wine Yeast Hanseniaspora uvarum, and Pyruvate Kinase Limits Its Capacity for Alcoholic Fermentation.

Anne-Kathrin Langenberg, Frauke J. Bink, Lena I. Wolff, Stefan Walter, Christian von Wallbrunn, Manfred Grossmann, Jürgen J. Heinisch, Hans-Peter Schmitz - Show less +7 more

31 Oct 2017-Applied and Environmental Microbiology

24 Citations

Comparative analyses suggest that the low fermentative capacity of H. uvarum compared to that of Saccharomyces cerevisiae can be attributed to low pyruvate kinase activity.

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How does genes and proteins of Saccharomyces cerevisiae get affected by Nacl??5 answersGenes and proteins of Saccharomyces cerevisiae are affected by NaCl stress. The yeast responds to high salinity by synthesizing osmolytes, altering ion transportation, and activating signal transduction pathways. The expression of certain genes is also affected, such as GPD1, TDH3, and ENO2, which are involved in glycerol synthesis and glycolysis. The adaptation to NaCl stress requires a signal transduction pathway involving Ca2+ and protein phosphorylation-dephosphorylation, with calcineurin playing a key role in coordinating gene expression and ion homeostasis. Additionally, the uptake of amino acids, including methionine, is reduced in salt-grown cells, possibly due to a lowered maximum velocity of the transport system. Overall, NaCl stress has a significant impact on the genes and proteins of Saccharomyces cerevisiae, influencing their synthesis, expression, and function.

How does Saccharomyces cerevisiae not produce ethanol?3 answersSaccharomyces cerevisiae is actually capable of producing ethanol. It is a well-established organism for bioethanol production. Ethanol tolerance is crucial for efficient bioethanol production from S. cerevisiae. Several studies have focused on understanding the mechanisms of ethanol tolerance in S. cerevisiae. These studies have identified various genes, pathways, and cellular responses that contribute to ethanol tolerance in S. cerevisiae. For example, the overexpression of HAL5 protein kinase has been shown to enhance ethanol tolerance in S. cerevisiae by improving cellular responses to ethanol-induced stress. Additionally, the activation of specific pathways such as longevity, peroxisomal, energy, lipid, and RNA/protein metabolisms have been found to drive ethanol tolerance in S. cerevisiae. Overall, S. cerevisiae has evolved various mechanisms to cope with ethanol stress and efficiently produce ethanol.

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