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• W4313367775 endingPage "110189" @default.
• W4313367775 startingPage "110189" @default.
• W4313367775 abstract "S-adenosyl-L-methionine (SAM), used in diverse pharmaceutical applications, was biosynthesized from L-methionine (L-met) and adenosine triphosphate (ATP). This study aims to increase the accumulation of SAM in Saccharomyces cerevisiae by promoting ATP availability. Strain ΔSOD1 was obtained from the parent strain WT15-33 (CCTCC M 2021915) by deleting gene sod1, which improved the supply of ATP. The SAM content in strain ΔSOD1 exhibited a 22.3% improvement compared to the parent strain, which reached 93.6 mg g-1. The transformation of NADH (reduced nicotinamide adenine dinucleotide) and the relative expression of ATPase essential genes were investigated, respectively. The results showed that the lack of gene sod1 benefited the generation of ATP, which positively regulated the synthesis of SAM. Besides that, the production of SAM was further enhanced by improving substrate assimilation. With the infusion of 1.44 g L-1L-met and 0.60 g L-1 adenosine at 24 h (h) and 0 h following fermentation, the optimum medium could produce 1.54 g L-1 SAM. Based on the regulations mentioned above, the SAM concentration of strain ΔSOD1 enhanced from 7.3 g L-1 to 10.1 g L-1 in a 5-L fermenter in 118 h. This work introduces a novel idea for the biosynthesis of ATP and SAM, and the strain ΔSOD1 has the potential for industrial production." @default.
• W4313367775 created "2023-01-06" @default.
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• W4313367775 date "2023-03-01" @default.
• W4313367775 modified "2023-10-17" @default.
• W4313367775 title "Improving ATP availability by sod1 deletion with a strategy of precursor feeding enhanced S-adenosyl-L-methionine accumulation in Saccharomyces cerevisiae" @default.
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• W4313367775 doi "https://doi.org/10.1016/j.enzmictec.2022.110189" @default.
• W4313367775 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/36586225" @default.
• W4313367775 hasPublicationYear "2023" @default.
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