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Screening and Remodeling of Enone Oxidoreductase for High Production of 2(or 5)-Ethyl-5(or 2)-methyl-4-hydroxy-3(2H)-Furanone in Saccharomyces Cerevisiae. 2022

Xiaomeng Fu, and Kunqiang Hong, and Haibin Wang, and Chuanbo Zhang, and Wenyu Lu
School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, PR China.

Owing to its unique fragrance, 4-hydroxy-2(or 5)-ethyl-5(or 2)-methyl-3(2H)-furanone (HEMF) is widely used as a food flavoring agent and has high demand. Enone oxidoreductase is a vital enzyme involved in HEMF production. In this study, an enone oxidoreductase from Naumovozyma dairenensis CBS 421 (NDEO) was used for HEMF production for the first time. The mutant NDEOT183W,K290W was obtained through semirational protein engineering, which increased the HEMF yield by 75.2%. Finally, the engineered strain BM4 produced the highest HEMF yield, 194.42 mg L-1 in 132 h. Our study revealed that HEMF production can be improved in Saccharomyces cerevisiae and that this is an efficient method to improve the activity of enone oxidoreductase, which is important for the industrial synthesis of furanone.

UI MeSH Term Description Entries
D010088 Oxidoreductases The class of all enzymes catalyzing oxidoreduction reactions. The substrate that is oxidized is regarded as a hydrogen donor. The systematic name is based on donor:acceptor oxidoreductase. The recommended name will be dehydrogenase, wherever this is possible; as an alternative, reductase can be used. Oxidase is only used in cases where O2 is the acceptor. (Enzyme Nomenclature, 1992, p9) Dehydrogenases,Oxidases,Oxidoreductase,Reductases,Dehydrogenase,Oxidase,Reductase
D004718 Saccharomycetales An order of fungi in the phylum Ascomycota that multiply by budding. They include the telomorphic ascomycetous yeasts which are found in a very wide range of habitats. Budding Yeast,Endomycetales,Endomycopsis,Yeast, Budding,Budding Yeasts,Endomycetale,Endomycopses,Saccharomycetale,Yeasts, Budding
D005656 Fungal Proteins Proteins found in any species of fungus. Fungal Gene Products,Fungal Gene Proteins,Fungal Peptides,Gene Products, Fungal,Yeast Proteins,Gene Proteins, Fungal,Peptides, Fungal,Proteins, Fungal
D005663 Furans Compounds with a 5-membered ring of four carbons and an oxygen. They are aromatic heterocycles. The reduced form is tetrahydrofuran. Tetrahydrofurans
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
D016681 Genome, Fungal The complete gene complement contained in a set of chromosomes in a fungus. Fungal Genome,Fungal Genomes,Genomes, Fungal

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