In Saccharomyces cerevisiae the attenuation of the 2- deoxy-D-glucose toxicity is alleviated by inositol
Keywords:
2-deoxy-D-glucose, INO1, β-Galactosidase activity, over production of inositolAbstract
In Saccharomysis cerevasiae the glycolytic transcription factor GCR1 tightly controls the expression of genes involved in glycolysis but the importance of Gcr1 transcription in 2-DG toxicity is still elusive. In the present study, we observed 2-DG toxicity in the wild-type, gcr1∆, and ino2∆ cells under inositol absence (I−) condition obstruct the growth, hence the opi1∆ cells were resistant to 2-DG exposure. Further, the presence of 2-DG significantly decreased the promoter activity of INO1 in the WT cells. The 2-DG exposure suppressed the growth rate in WT and gcr1∆ strains under inositol limitation condition, but the opi1∆ (over production of inositol) strain was resistant to the 2-DG exposure with I− condition. Taken together, the above findings suggest that 2-DG exposure reduced the promoter activity of INO1 leads to inositol auxotrophic growth defect, hence the inositol supplementation bring back normal. To conclude that the inositol alleviates the 2-DG toxicity in Saccharomyces cerevisiae.
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