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101 results about "Enterobacteriaceae bacterium" patented technology

Method for producing L-amino acids using bacteria of the Enterobacteriaceae family

ActiveUS20060088919A1Improve productivityD-xylose permease is enhancedBacteriaDepsipeptidesL-threonineArginine
There is disclosed a method for producing L-amino acid, for example L-threonine, L-lysine, L-histidine, L-phenylalanine, L-arginine or L-glutamic acid, using a bacterium of the Enterobacteriaceae family, wherein the bacterium has been modified to enhance an activity of D-xylose permease.
Owner:AJINOMOTO CO INC

Method for producing an l-amino acid using a bacterium of the enterobacteriaceae family

A method for producing an L-amino acid is described, for example L-threonine, L-lysine, L-histidine, L-phenylalanine, L-arginine, L-tryptophan, or L-glutamic acid, using a bacterium of the Enterobacteriaceae family, wherein the bacterium has been modified to enhance an activity of a wild-type alcohol dehydrogenase encoded by the adhE gene or a mutant alcohol dehydrogenase which is resistant to aerobic inactivation.
Owner:AJINOMOTO CO INC

Mutant phosphoribosylpyrophosphate synthetase and method for producing L-histidine

The present invention relates to a mutant bacterial PRPP synthetase which is resistant to feedback by purine nucleotides, and a method for producing L-histidine using the bacterium of the Enterobacteriaceae family wherein the L-amino acid productivity of said bacterium is enhanced by use of the PRPP synthetase which is resistant to feedback by purine nucleotides, coded by the mutant prsA gene.
Owner:AJINOMOTO CO INC

Loop-mediated isothermal amplification (LAMP) primers, kit and detection method for detecting common carbapenemase genes of gram negative bacilli

The invention discloses loop-mediated isothermal amplification (LAMP) primers, a kit and a detection method for detecting common carbapenemase genes of gram negative bacilli. In the LAMP primers disclosed by the invention, klebsiella pneumoniae carbapenemase (KPC) and new delhi metallo-b-lactamase (NDM) primer groups can detect all subtypes except for NDM-10; hypoxanthine nucleotide (IMP) and vimentin (VIM) primer groups can detect common subtypes at home and abroad. The LAMP kit built by the invention is applied to joint detection of KPC, NDM, IMP and VIM genes, can cover the common carbapenemase genes of non-fermentative bacteria and enterobacteriaceae, can accurately and quickly screen the common carbapenemase genes, and has great clinical significance for timely detecting and further controlling fulminant epidemic caused by propagation of the carbapenemase genes in enterobacteriaceae. The kit disclosed by the invention is high in detection sensitivity and the minimum detection limits of the KPC, NDM, IMP and VIM genes can reach 100 CFU / reaction.
Owner:SOUTHERN MEDICAL UNIVERSITY

Bacterium for fermenting L-tryptophan from mixed saccharum and fermentation method thereof

The invention relates to the field of microorganisms, and in particular relates to a bacterium for fermenting L-tryptophan from mixed saccharum and a fermentation method thereof. The Enterobacteriaceae bacterium for producing L-tryptophan can have the capability of simultaneously utilizing hexose and pentose to produce the L-tryptophan because of containing the coding gene of a cAMP receptor protein mutant. The cAMP receptor protein mutant is obtained through mutating one or a plurality of amino acid loci of the cAMP receptor protein. The bacterium provided by the invention consumes glucose and xylose in a culture medium containing the glucose and the xylose at the same time, and the yield and conversion rate of the L-tryptophan are increased.
Owner:新疆梅花氨基酸有限责任公司

Mutant Phosphoribosylpyrophosphate Synthetase and Method for Producing L-Histidine

The present invention relates to a mutant bacterial PRPP synthetase which is resistant to feedback by purine nucleotides, and a method for producing L-histidine using the bacterium of the Enterobacteriaceae family wherein the L-amino acid productivity of said bacterium is enhanced by use of the PRPP synthetase which is resistant to feedback by purine nucleotides, coded by the mutant prsA gene.
Owner:AJINOMOTO CO INC

Method for producing an l-amino acid using a bacterium of the enterobacteriaceae family

A method is described for producing an L-amino acid, for example L-threonine, L-lysine, L-leucine, L-histidine, L-cysteine, L-phenylalanine, L-arginine, L-tryptophan, L-glutamic acid, L-valine, and L-isoleucine, by fermentation of glucose using a bacterium of the Enterobacteriaceae family, wherein the bacterium has been modified to enhance the activity of the high-affinity arabinose transporter coded by the araFGH operon.
Owner:AJINOMOTO CO INC

Method for producing l-arginine using a bacterium of enterobacteriaceae family, having attenuated expression of a gene encoding an l-arginine transporter

InactiveUS20100143983A1Improve productivityIncreased ability to produce L-arginineBacteriaHydrolasesBacteroidesMicrobiology
The present invention provides a method for producing L-arginine using a bacterium of the Enterobacteriaceae family, particularly a bacterium belonging to the genus Escherichia or Pantoea, which has been modified to attenuate expression of one or several genes encoding an L-arginine transporter.
Owner:AJINOMOTO CO INC

Method for producing amino acids using bacterium of the enterobacteriaceae family

A method for producing an L-amino acid is described, for example, L-phenylalanine and L-histidine, by fermentation using a bacterium of the Enterobacteriaceae family, wherein the bacterium has been modified by attaching a DNA fragment able to be transcribed encoding the peptide represented in SEQ ID NO: 2, or a variant thereof, particularly a portion of the ssrA gene, to the 3′-end of gene encoding for the bacterial enzyme, which influences on the L-amino acid biosynthesis, such as chorismate mutase / prephenate dehydrogenase or phosphoglucose isomerase.
Owner:AJINOMOTO CO INC

Method for producing an l-amino acid by fermentation using a bacterium having an enhanced ability to utilize glycerol

The present invention provides a method for producing an L-amino acid using a bacterium of the Enterobacteriaceae family, particularly a bacterium belonging to genus Escherichia or Pantoea, which has been modified to have glycerol kinase in which feedback inhibition by fructose-1,6-bisphosphate is desensitized, thereby having enhanced ability to utilize glycerol.
Owner:AJINOMOTO CO INC

Method for producing an l-cysteine, l-cystine, a derivative or precursor thereof or a mixture thereof using a bacterium of enterobacteriaceae family

The present invention provides a method for producing L-cysteine, L-cystine, a derivative or precursor thereof or a mixture thereof using a bacterium of Enterobacteriaceae family which has been modified to have enhanced expression of the genes involved in the process of sulphur assimilation.
Owner:AJINOMOTO CO INC

Method for producing l-amino acids using bacteria of the enterobacteriaceae family

ActiveUS20110143403A1Improve productivityD-xylose permease is enhancedFermentationBacteroidesArginine
There is disclosed a method for producing L-amino acid, for example L-threonine, L-lysine, L-histidine, L-phenylalanine, L-arginine or L-glutamic acid, using a bacterium of the Enterobacteriaceae family, wherein the bacterium has been modified to enhance an activity of D-xylose permease.
Owner:AJINOMOTO CO INC
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