Improved 2,3-Butanediol Production Rate of Metabolically Engineered Saccharomyces cerevisiae by Deletion of RIM15 and Activation of Pyruvate Consumption Pathway. 2023

Masahiko Sugimura, and Taisuke Seike, and Nobuyuki Okahashi, and Yoshihiro Izumi, and Takeshi Bamba, and Jun Ishii, and Fumio Matsuda
Department of Bioinformatics Engineering, Graduate School of Information Science and Technology, Osaka University, 1-5 Yamadaoka, Suita 565-0871, Osaka, Japan.

Saccharomyces cerevisiae is a promising host for the bioproduction of higher alcohols, such as 2,3-butanediol (2,3-BDO). Metabolically engineered S. cerevisiae strains that produce 2,3-BDO via glycolysis have been constructed. However, the specific 2,3-BDO production rates of engineered strains must be improved. To identify approaches to improving the 2,3-BDO production rate, we investigated the factors contributing to higher ethanol production rates in certain industrial strains of S. cerevisiae compared to laboratory strains. Sequence analysis of 11 industrial strains revealed the accumulation of many nonsynonymous substitutions in RIM15, a negative regulator of high fermentation capability. Comparative metabolome analysis suggested a positive correlation between the rate of ethanol production and the activity of the pyruvate-consuming pathway. Based on these findings, RIM15 was deleted, and the pyruvate-consuming pathway was activated in YHI030, a metabolically engineered S. cerevisiae strain that produces 2,3-BDO. The titer, specific production rate, and yield of 2,3-BDO in the test tube-scale culture using the YMS106 strain reached 66.4 ± 4.4 mM, 1.17 ± 0.017 mmol (g dry cell weight h)-1, and 0.70 ± 0.03 mol (mol glucose consumed)-1. These values were 2.14-, 2.92-, and 1.81-fold higher than those of the vector control, respectively. These results suggest that bioalcohol production via glycolysis can be enhanced in a metabolically engineered S. cerevisiae strain by deleting RIM15 and activating the pyruvate-consuming pathway.

UI MeSH Term Description Entries
D002072 Butylene Glycols 4-carbon straight chain aliphatic hydrocarbons substituted with two hydroxyl groups. The hydroxyl groups cannot be on the same carbon atom. Butanediols,Dihydroxybutanes,Glycols, Butylene
D005285 Fermentation Anaerobic degradation of GLUCOSE or other organic nutrients to gain energy in the form of ATP. End products vary depending on organisms, substrates, and enzymatic pathways. Common fermentation products include ETHANOL and LACTIC ACID. Fermentations
D000431 Ethanol A clear, colorless liquid rapidly absorbed from the gastrointestinal tract and distributed throughout the body. It has bactericidal activity and is used often as a topical disinfectant. It is widely used as a solvent and preservative in pharmaceutical preparations as well as serving as the primary ingredient in ALCOHOLIC BEVERAGES. Alcohol, Ethyl,Absolute Alcohol,Grain Alcohol,Alcohol, Absolute,Alcohol, Grain,Ethyl Alcohol
D012441 Saccharomyces cerevisiae A species of the genus SACCHAROMYCES, family Saccharomycetaceae, order Saccharomycetales, known as "baker's" or "brewer's" yeast. The dried form is used as a dietary supplement. Baker's Yeast,Brewer's Yeast,Candida robusta,S. cerevisiae,Saccharomyces capensis,Saccharomyces italicus,Saccharomyces oviformis,Saccharomyces uvarum var. melibiosus,Yeast, Baker's,Yeast, Brewer's,Baker Yeast,S cerevisiae,Baker's Yeasts,Yeast, Baker
D060847 Metabolic Engineering Methods and techniques used to genetically modify cells' biosynthetic product output and develop conditions for growing the cells as BIOREACTORS. Engineering, Metabolic
D019289 Pyruvic Acid An intermediate compound in the metabolism of carbohydrates, proteins, and fats. In thiamine deficiency, its oxidation is retarded and it accumulates in the tissues, especially in nervous structures. (From Stedman, 26th ed) Pyruvate,Acid, Pyruvic

Related Publications

Masahiko Sugimura, and Taisuke Seike, and Nobuyuki Okahashi, and Yoshihiro Izumi, and Takeshi Bamba, and Jun Ishii, and Fumio Matsuda
August 2022, Journal of biotechnology,
Masahiko Sugimura, and Taisuke Seike, and Nobuyuki Okahashi, and Yoshihiro Izumi, and Takeshi Bamba, and Jun Ishii, and Fumio Matsuda
October 2013, Bioresource technology,
Masahiko Sugimura, and Taisuke Seike, and Nobuyuki Okahashi, and Yoshihiro Izumi, and Takeshi Bamba, and Jun Ishii, and Fumio Matsuda
June 2014, Applied microbiology and biotechnology,
Masahiko Sugimura, and Taisuke Seike, and Nobuyuki Okahashi, and Yoshihiro Izumi, and Takeshi Bamba, and Jun Ishii, and Fumio Matsuda
January 2019, Biotechnology for biofuels,
Masahiko Sugimura, and Taisuke Seike, and Nobuyuki Okahashi, and Yoshihiro Izumi, and Takeshi Bamba, and Jun Ishii, and Fumio Matsuda
December 2014, Journal of biotechnology,
Masahiko Sugimura, and Taisuke Seike, and Nobuyuki Okahashi, and Yoshihiro Izumi, and Takeshi Bamba, and Jun Ishii, and Fumio Matsuda
October 2019, Journal of biotechnology,
Masahiko Sugimura, and Taisuke Seike, and Nobuyuki Okahashi, and Yoshihiro Izumi, and Takeshi Bamba, and Jun Ishii, and Fumio Matsuda
January 2016, Biotechnology for biofuels,
Masahiko Sugimura, and Taisuke Seike, and Nobuyuki Okahashi, and Yoshihiro Izumi, and Takeshi Bamba, and Jun Ishii, and Fumio Matsuda
November 2012, Biotechnology and bioengineering,
Masahiko Sugimura, and Taisuke Seike, and Nobuyuki Okahashi, and Yoshihiro Izumi, and Takeshi Bamba, and Jun Ishii, and Fumio Matsuda
October 2015, Journal of industrial microbiology & biotechnology,
Masahiko Sugimura, and Taisuke Seike, and Nobuyuki Okahashi, and Yoshihiro Izumi, and Takeshi Bamba, and Jun Ishii, and Fumio Matsuda
August 2014, Sheng wu gong cheng xue bao = Chinese journal of biotechnology,
Copied contents to your clipboard!