Metabolic engineering of Escherichia coli for efficient production of l-alanyl-l-glutamine
نویسندگان
چکیده
منابع مشابه
Systems metabolic engineering of Escherichia coli for L-threonine production
Amino-acid producers have traditionally been developed by repeated random mutagenesis owing to the difficulty in rationally engineering the complex and highly regulated metabolic network. Here, we report the development of the genetically defined L-threonine overproducing Escherichia coli strain by systems metabolic engineering. Feedback inhibitions of aspartokinase I and III (encoded by thrA a...
متن کاملFermentative production of L-alanyl-L-glutamine by a metabolically engineered Escherichia coli strain expressing L-amino acid alpha-ligase.
In spite of its clinical and nutritional importance, l-alanyl-l-glutamine (Ala-Gln) has not been widely used due to the absence of an efficient manufacturing method. Here, we present a novel method for the fermentative production of Ala-Gln using an Escherichia coli strain expressing l-amino acid alpha-ligase (Lal), which catalyzes the formation of dipeptides by combining two amino acids in an ...
متن کاملMetabolic engineering of a reduced-genome strain of Escherichia coli for L-threonine production
BACKGROUND Deletion of large blocks of nonessential genes that are not needed for metabolic pathways of interest can reduce the production of unwanted by-products, increase genome stability, and streamline metabolism without physiological compromise. Researchers have recently constructed a reduced-genome Escherichia coli strain MDS42 that lacks 14.3% of its chromosome. RESULTS Here we describ...
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In order to meet the need of consumer preferences for natural flavor compounds, microbial synthesis method has become a very attractive alternative to the chemical production. The 2-phenylethanol (2-PE) and its ester 2-phenylethylacetate (2-PEAc) are two extremely important flavor compounds with a rose-like odor. In recent years, Escherichia coli and yeast have been metabolically engineered to ...
متن کاملModular engineering of L-tyrosine production in Escherichia coli.
Efficient biosynthesis of L-tyrosine from glucose is necessary to make biological production economically viable. To this end, we designed and constructed a modular biosynthetic pathway for L-tyrosine production in E. coli MG1655 by encoding the enzymes for converting erythrose-4-phosphate (E4P) and phosphoenolpyruvate (PEP) to L-tyrosine on two plasmids. Rational engineering to improve L-tyros...
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ژورنال
عنوان ژورنال: Microbial Cell Factories
سال: 2020
ISSN: 1475-2859
DOI: 10.1186/s12934-020-01369-2