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- W2072082034 abstract "cis,cis-Muconic acid (MA) and salicylic acid (SA) are naturally-occurring organic acids having great commercial value. MA is a potential platform chemical for the manufacture of several widely-used consumer plastics; while SA is mainly used for producing pharmaceuticals (for example, aspirin and lamivudine) and skincare and haircare products. At present, MA and SA are commercially produced by organic chemical synthesis using petro-derived aromatic chemicals, such as benzene, as starting materials, which is not environmentally friendly. Here, we report a novel approach for efficient microbial production of MA via extending shikimate pathway by introducing the hybrid of an SA biosynthetic pathway with its partial degradation pathway. First, we engineered a well-developed phenylalanine producing Escherichia coli strain into an SA overproducer by introducing isochorismate synthase and isochorismate pyruvate lyase. The engineered strain is able to produce 1.2 g/L of SA from simple carbon sources, which is the highest titer reported so far. Further, the partial SA degradation pathway involving salicylate 1-monoxygenase and catechol 1,2-dioxygenase is established to achieve the conversion of SA to MA. Finally, a de novo MA biosynthetic pathway is assembled by integrating the established SA biosynthesis and degradation modules. Modular optimization enables the production of up to 1.5 g/L MA within 48 h in shake flasks. This study not only establishes an efficient microbial platform for the production of SA and MA, but also demonstrates a generalizable pathway design strategy for the de novo biosynthesis of valuable degradation metabolites." @default.
- W2072082034 created "2016-06-24" @default.
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- W2072082034 creator A5050738451 @default.
- W2072082034 creator A5051098970 @default.
- W2072082034 creator A5051418724 @default.
- W2072082034 date "2014-05-01" @default.
- W2072082034 modified "2023-10-16" @default.
- W2072082034 title "Extending shikimate pathway for the production of muconic acid and its precursor salicylic acid in Escherichia coli" @default.
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- W2072082034 doi "https://doi.org/10.1016/j.ymben.2014.02.009" @default.
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