Abstract
The genetic modification of yeast strains can be used as an approach for the improvement of ethanol fermentation. msn2p transcription factor is implicated in yeast stress response and its activation is controlled by protein kinase A (PKA). PKA activation inhibits the translocation of msn2p to the nucleus. An in silico analysis of msn2 protein sequence revealed serine residue at position 625 as a potent target of PKA. Thus, substitution of this serine residue with alanine increases the susceptibility of the cells to ethanol challenge reducing IC50 from 3% vol/vol to 2.42% vol/vol. Additionally, cells carrying this substitution were shown a significantly reduced fermentation rate at 30°C and 18°C increasing the total fermentation time by approximately two and three times, respectively. These results clearly indicate that Ser625 is absolutely necessary for yeast to retain its fermentation ability and ethanol tolerance.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
