Abstract
Protein phosphorylation catalyzed by protein kinases is the major regulatory mechanism that controls many cellular processes. The regulatory mechanism of one protein kinase in different signals is distinguished, probably inducing multiple phenotypes. The Saccharomyces cerevisiae Snf1 protein kinase, a member of the AMP‑activated protein kinase family, plays important roles in the response to nutrition and environmental stresses. Glucose is an important nutrient for life activities of cells, but glucose repression and osmotic pressure could be produced at certain concentrations. To deeply understand the role of Snf1 in the regulation of nutrient metabolism and stress response of S. cerevisiae cells, the role and the regulatory mechanism of Snf1 in glucose metabolism are discussed in different level of glucose: below 1% (glucose derepression status), in 2% (glucose repression status), and in 30% glucose (1.66 M, an osmotic equivalent to 0.83 M NaCl). In summary, Snf1 regulates glucose metabolism in a glucose-dependent manner, which is associated with the different regulation on activation, localization, and signal pathways of Snf1 by varied glucose. Exploring the regulatory mechanism of Snf1 in glucose metabolism in different concentrations of glucose can provide insights into the study of the global regulatory mechanism of Snf1 in yeast and can help to better understand the complexity of physiological response of cells to stresses.
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Acknowledgements
This study was financially supported by the Scientific Research Foundation of Hainan University (grant number KYQD1660) and the Foundation (No. 2018KF001) of Key Laboratory of Industrial Fermentation Microbiology of Ministry of Education and Tianjin Key Lab of Industrial Microbiology (Tianjin University of Science and Technology).
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Lin, X. The regulation of Saccharomyces cerevisiae Snf1 protein kinase on glucose utilization is in a glucose-dependent manner. Curr Genet 67, 245–248 (2021). https://doi.org/10.1007/s00294-020-01137-0
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DOI: https://doi.org/10.1007/s00294-020-01137-0