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Dynamic engineering of 1-alkenes biosynthesis and secretion in yeast.

Yongjin Zhou (Institutionen för biologi och bioteknik) ; Yating Hu (Institutionen för biologi och bioteknik, Systembiologi) ; Zhiwei Zhu (Institutionen för biologi och bioteknik, Systembiologi) ; Verena Siewers (Institutionen för biologi och bioteknik, Systembiologi) ; Jens B. Nielsen (Institutionen för biologi och bioteknik, Systembiologi)
ACS synthetic biology (2161-5063). (2017)
[Artikel, refereegranskad vetenskaplig]

Microbial production of fatty acid-derived hydrocarbons offers a great opportunity to sustainably supply biofuels and oleochemicals. One challenge is to achieve a high production rate. Besides, low efficiency in secretion will cause high separation costs and it is therefore desirable to have product secretion. Here, we engineered the budding yeast Saccharomyces cerevisiae, to produce and secrete 1-alkenes by manipulation of the fatty acid metabolism, enzyme selection, engineering the electron transfer system and expressing a transporter. Furthermore, we implemented a dynamic regulation strategy to control the expression of membrane enzyme and transporter, which improved 1-alkene production and cell growth by relieving the possible toxicity of overexpressed membrane proteins. With these efforts, the engineered yeast cell factory produced 35.3 mg/L 1-alkenes with more than 80% being secreted. This represents a 10-fold improvement compared with earlier reported hydrocarbon production by S. cerevisiae.

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Denna post skapades 2018-01-02. Senast ändrad 2018-01-15.
CPL Pubid: 254245


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