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Data of manuscript Transcriptional regulation of ergosterol biosynthesis genes in response to iron deficiency

AuthorsJordá,Tania; Barba-Aliaga, Marina; Rozès, Nicolas; Alepuz, Paula; Martínez-Pastor, María Teresa; Puig, Sergi CSIC ORCID
Issue DateAug-2022
CitationJordá, T., Barba-Aliaga, M., Rozès, N., Alepuz, P., Martínez-Pastor, M.T. and Puig, S.; 2022; "Data of manuscript Transcriptional regulation of ergosterol biosynthesis genes in response to iron deficiency"; DIGITAL.CSIC;
AbstractIron participates as an essential cofactor in the biosynthesis of critical cellular components, including DNA, proteins and lipids. The ergosterol biosynthetic pathway, which is an important target of antifungal treatments, depends on iron in four enzymatic steps. Our results in the model yeast Saccharomyces cerevisiae show that the expression of ergosterol biosynthesis (ERG) genes is tightly modulated by iron availability probably through the iron-dependent variation of sterol and heme levels. Whereas, the transcription factors Upc2 and Ecm22 are responsible for the activation of ERG genes upon iron deficiency, the heme-dependent factor Hap1 triggers their Tup1-mediated transcriptional repression. The combined regulation by both activating and repressing regulatory factors allows for the fine-tuning of ERG transcript levels along the progress of iron deficiency, avoiding the accumulation of toxic sterol intermediates and enabling efficient adaptation to rapidly changing conditions. The lack of these regulatory factors leads to changes in the yeast sterol profile upon iron-deficient conditions. Both environmental iron availability and specific regulatory factors should be considered in ergosterol antifungal treatments
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ReferencesJordá, Tania; Barba-Aliaga, Marina; Rozès, Nicolas; Alepuz, Paula; Martínez-Pastor, M.Teresa; Puig, Sergi. Transcriptional regulation of ergosterol biosynthesis genes in response to iron deficiency. DOI:10.1111/1462-2920.16157.
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Figure 1.xlsxExcel file - data for Fig.1 of manuscript36,4 kBMicrosoft Excel XMLView/Open
Figure 2.xlsxExcel file - data for Fig.2 of manuscript38,41 kBMicrosoft Excel XMLView/Open
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