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Producing malonate in Saccharomyces cerevisiae via the β-alanine pathway by Shiyun Li; Wenxuan Fu; Ruifang Su; Yunying Zhao; Yu Deng is a Biochemistry, Genetics and Molecular Biology article available to read on EtoBox.

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Malonate is a high-value chemical that can be used to produce value-added compounds. Due to the toxic by-products and low product yield for malonate production through hydrolysis of cyanoacetic acid, microbial production methods have attracted significant attention. Previously, the β-alanine pathway has been engineered in Escherichia coli for malonate production. In this study, the β-alanine pathway was constructed in Saccharomyces cerevisiae by introducing the heterologous genes of BcBAPAT and TcPAND to convert l-aspartate to malonic semialdehyde, combining with co-expression genes of AAT2 and UGA2 to improve precursor supply and malonate producing. Through delta sequence-based integration of the two heterologous genes, the engineered strain produced with 7.21 mg/L malonate was screened. Further, replaced the succinic semialdehyde dehydrogenase gene UGA2 with yneI from E. coli which was utilized to produce malonate in previous study, increased the malonate titer to 7.96 mg/L in flask culture. Following optimization, fermentation of the final engineered strain in shake flasks yielded a maximum malonate titer of 12.83 mg/L, and this was increased to 91.53 mg/L during fed-batch ferme

Who reads Producing malonate in Saccharomyces cerevisiae via the β-alanine pathway?

Author

Shiyun Li; Wenxuan Fu; Ruifang Su; Yunying Zhao; Yu Deng

Publisher

Springer Science and Business Media LLC

Published

2022

Language

EN

Field

Biochemistry, Genetics and Molecular Biology (Life Sciences)