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- W2141080412 endingPage "e28344" @default.
- W2141080412 startingPage "e28344" @default.
- W2141080412 abstract "The de novo biosynthetic machinery for both sphingolipid and ergosterol production in yeast is localized in the endoplasmic reticulum (ER) and Golgi. The interconnections between the two pathways are still poorly understood, but they may be connected in specialized membrane domains, and specific knockouts strongly suggest that both routes have different layers of mutual control and are co-affected by drugs. With the goal of shedding light on the functional integration of the yeast sphingolipid-ergosterol (SL-E) pathway, we constructed a dynamic model of the ergosterol pathway using the guidelines of Biochemical Systems Theory (BST) (Savageau., J. theor. Biol., 25, 365–9, 1969). The resulting model was merged with a previous mathematical model of sphingolipid metabolism in yeast (Alvarez-Vasquez et al., J. theor. Biol., 226, 265–91, 2004; Alvarez-Vasquez et al., Nature 433, 425–30, 2005). The S-system format within BST was used for analyses of consistency, stability, and sensitivity of the SL-E model, while the GMA format was used for dynamic simulations and predictions. Model validation was accomplished by comparing predictions from the model with published results on sterol and sterol-ester dynamics in yeast. The validated model was used to predict the metabolomic dynamics of the SL-E pathway after drug treatment. Specifically, we simulated the action of drugs affecting sphingolipids in the endoplasmic reticulum and studied changes in ergosterol associated with microdomains of the plasma membrane (PM)." @default.
- W2141080412 created "2016-06-24" @default.
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- W2141080412 creator A5015690403 @default.
- W2141080412 creator A5063233199 @default.
- W2141080412 creator A5090422329 @default.
- W2141080412 date "2011-12-14" @default.
- W2141080412 modified "2023-09-27" @default.
- W2141080412 title "Mathematical Modeling and Validation of the Ergosterol Pathway in Saccharomyces cerevisiae" @default.
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