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2. Ecm33 is a novel factor involved in efficient glucose uptake for nutrition-responsive TORC1 signaling in yeast

Author

Daiki Nakai, Midori Umekawa, Mamoru Wakayama, Hiromu Takematsu, and Masato Ujihara

Subjects
0301 basic medicine, Snf3, Saccharomyces cerevisiae Proteins, Glucose uptake, Saccharomyces cerevisiae, Biophysics, TORC1 signaling, Autophagy-Related Proteins, Protein Serine-Threonine Kinases, Biochemistry, 03 medical and health sciences, Adenosine Triphosphate, Structural Biology, Autophagy, Genetics, Extracellular, Phosphorylation, Molecular Biology, Adaptor Proteins, Signal Transducing, Cell Proliferation, biology, Chemistry, Membrane Proteins, Cell Biology, Autophagy-related protein 13, biology.organism_classification, Cell biology, Glucose, 030104 developmental biology, Signal transduction, Energy source, Signal Transduction, Transcription Factors
Abstract

Glucose uptake is crucial for providing both an energy source and a signal that regulates cell proliferation. Therefore, it is important to clarify the mechanisms underlying glucose uptake and its transmission to intracellular signaling pathways. In this study, we searched for a novel regulatory factor involved in glucose-induced signaling by using Saccharomyces cerevisiae as a eukaryotic model. Requirement of the extracellular protein Ecm33 in efficient glucose uptake and full activation of the nutrient-responsive TOR kinase complex 1 (TORC1) signaling pathway is shown. Cells lacking Ecm33 elicit a series of starvation-induced pathways even in the presence of extracellular high glucose concentration. This results in delayed cell proliferation, reduced ATP, induction of autophagy, and dephosphorylation of the TORC1 substrates Atg13 and Sch9.

Published
2017
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5. 308 Influence of Shape and Set Position of Regenerator Stack on the Cooling Performance in Loop-tube Type Thermoacoustic Refrigerator

Author

Yujiro Kitaide, Masafumi Hirota, Daiki Nakai, Eiji Takamatsu, Naoki Maruyama, and Mami Yamamoto

Subjects
Loop (topology), Set (abstract data type), Materials science, Stack (abstract data type), Control theory, Position (vector), Regenerative heat exchanger, Refrigerator car, Mechanical engineering, Tube (fluid conveyance), Thermoacoustic heat engine
Published
2016
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