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    The aim of this work was to identify elements of adaptive regulatory mechanism for basal level of yeast histone deacetylase Sir2. Heat shock response (HSR) was altered in the absence of the NAD-dependent glycerol 3-phosphate dehydrogenase (Gpd1). Increase in HSR was lower in ΔGpd1 cells than wild-type cells. An inverse correlation existed between Gpd1 and Sir2; Sir2-deleted cells showed higher expression of Gpd1 while deletion of Gpd1 led to higher expression of Sir2. In the absence of Gpd1, basal activity of Sir2 promoter was higher and was increased further upon heat shock, suggesting higher Sir2 levels. No interaction between Gpd1 and Sir2 was detected without or with heat shock using immunoprecipitation. The results show that Gpd1 regulates HSR in yeast cells and likely blocks its uncontrolled activation. As uncontrolled stress adversely affects the cellular adaptive response, Gpd1 may be a component of the cell's catalogue to ensure a balanced response to unmitigated thermal stress. Copyright © 2022 Elsevier B.V. All rights reserved.


    Anusha Rani Pallapati, Shivcharan Prasad, Ipsita Roy. Glycerol 3-phosphate dehydrogenase regulates heat shock response in Saccharomyces cerevisiae. Biochimica et biophysica acta. Molecular cell research. 2022 May;1869(5):119238

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    PMID: 35150808

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