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- W2891479080 abstract "Gup1 is the yeast counterpart of the high eukaryotes HHATL. This and the close homologue Gup2/HHAT regulate the Hedgehog morphogenic, developmental pathway. In yeasts, a similar paracrine pathway is not known though the Δgup1 mutant is associated with morphology and proliferation/death processes. As a first step toward identifying the actual molecular/enzymatic function of Gup1, this work identified by co-immunoprecipitation the yeast mitochondria membrane VDAC1/Por1 as a physical partner of Gup1. Gup1 locates in the ER and the plasma membrane. It was now confirmed to further locate, as Por1, in the mitochondrial sub-cellular fraction. The yeast Por1-Gup1 association was found important for (i) the sensitivity to cell wall perturbing agents and high temperature, (ii) the differentiation into structured colonies, (iii) the size achieved by multicellular aggregates/mats and (iv) acetic-acid-induced Programmed Cell Death. Moreover, the absence of Gup1 increased the levels of POR1 mRNA, while decreasing the amounts of intracellular Por1, which was concomitantly previously known to be secreted by the mutant but not by wt. Additionally, Por1 patchy distribution in the mitochondrial membrane was evened. Results suggest that Por1 and Gup1 collaborate in the control of colony morphology and mat development, but more importantly of cellular integrity and death." @default.
- W2891479080 created "2018-09-27" @default.
- W2891479080 creator A5055148652 @default.
- W2891479080 creator A5088962738 @default.
- W2891479080 date "2018-09-03" @default.
- W2891479080 modified "2023-10-16" @default.
- W2891479080 title "Saccharomyces cerevisiae mitochondrial Por1/yVDAC1 (voltage-dependent anion channel 1) interacts physically with the MBOAT O-acyltransferase Gup1/HHATL in the control of cell wall integrity and programmed cell death" @default.
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