MIG1 Glucose Repression in Metabolic Processes of Saccharomyces cerevisiae: Genetics to Metabolic Engineering

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Alipourfard Iraj; Datukishvili Nelly; BAKHTIYARI SALAR; HAGHANI KARIMEH; Renzo Laura Di; de Miranda Renata Costa; MIKELADZE DAVID

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Journal: Avicenna Journal of Medical Biotechnology Year:2019 | Volume:11 | Issue:3 Page(s): 215-220

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Title

MIG1 Glucose Repression in Metabolic Processes of Saccharomyces cerevisiae: Genetics to Metabolic Engineering

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Keywords

Saccharomyces cerevisiae

Homologous recombination

Metabolic pathways

Yeasts

Abstract

Background: Although Saccharomyces cerevisiae has several industrial applications, there are still fundamental problems associated with sequential use of carbon sources. As such, glucose repression effect can direct metabolism of yeast to preferably anaer-obic conditions. This leads to higher ethanol production and less efficient production of recombinant products. The general glucose repression system is constituted by MIG1, TUP1 and SSN6 factors. The role of MIG1 is known in glucose repression but the evalu-ation of effects on aerobic/anaerobic metabolism by deletion of MIG1 and constructing an optimal strain brand remains unclear and an objective to be explored. Methods: To find the impact of MIG1 in induction of glucose-repression, the Mig1 dis-ruptant strain (Δ MIG1) was produced for comparing with its congenic wild-type strain (2805). The analysis approached for changes in the rate of glucose consumption, bio-mass yield, cell protein contents, ethanol and intermediate metabolites production. The MIG1 disruptant strain exhibited 25% glucose utilization, 12% biomass growth rate and 22% protein content over the wild type. The shift to respiratory pathway has been demonstrated by 122. 86 and 40% increase of glycerol and pyruvate production, respectively as oxidative metabolites, while the reduction of fermentative metabolites such as acetate 35. 48 and ethanol 24%. Results: Results suggest that Δ MIG1 compared to the wild-type strain can significantly present less effects of glucose repression. Conclusion: The constructed strain has more efficient growth in aerobic cultivations and it can be a potential host for biotechnological recombinant yields and industrial interests.

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APA: Copy

Alipourfard, Iraj, Datukishvili, Nelly, BAKHTIYARI, SALAR, HAGHANI, KARIMEH, Renzo, Laura Di, de Miranda, Renata Costa, & MIKELADZE, DAVID. (2019). MIG1 Glucose Repression in Metabolic Processes of Saccharomyces cerevisiae: Genetics to Metabolic Engineering. AVICENNA JOURNAL OF MEDICAL BIOTECHNOLOGY (AJMB), 11(3), 215-220. SID. https://sid.ir/paper/314033/en

Vancouver: Copy

Alipourfard Iraj, Datukishvili Nelly, BAKHTIYARI SALAR, HAGHANI KARIMEH, Renzo Laura Di, de Miranda Renata Costa, MIKELADZE DAVID. MIG1 Glucose Repression in Metabolic Processes of Saccharomyces cerevisiae: Genetics to Metabolic Engineering. AVICENNA JOURNAL OF MEDICAL BIOTECHNOLOGY (AJMB)[Internet]. 2019;11(3):215-220. Available from: https://sid.ir/paper/314033/en

IEEE: Copy

Iraj Alipourfard, Nelly Datukishvili, SALAR BAKHTIYARI, KARIMEH HAGHANI, Laura Di Renzo, Renata Costa de Miranda, and DAVID MIKELADZE, “MIG1 Glucose Repression in Metabolic Processes of Saccharomyces cerevisiae: Genetics to Metabolic Engineering,” AVICENNA JOURNAL OF MEDICAL BIOTECHNOLOGY (AJMB), vol. 11, no. 3, pp. 215–220, 2019, [Online]. Available: https://sid.ir/paper/314033/en

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