Abstract:
A method for producing L-amino acids, such as L-tryptophan, L-phenylalanine, and L-tyrosine, using a bacterium of the Enterobacteriaceae family is provided. The L-amino acid productivity of said bacterium is increased by enhancing an activity of 6-phosphogluconolactonase, which is encoded by the pgl gene (ybhE ORF).
Abstract:
The present invention relates to a method for producing L-amino acids, such as L-tryptophan, L-phenylalanine and L-tyrosine, using a bacterium belonging to the genus Escherichia, and wherein the L-amino acid productivity of said bacterium is enhanced by enhancing an activity of PEP carboxykinase, which is coded by the pckA gene.
Abstract:
A method for producing L-amino acids, such as L-tryptophan, L-phenylalanine, and L-tyrosine, using a bacterium of the Enterobacteriaceae family is provided. The L-amino acid productivity of said bacterium is increased by enhancing an activity of 6-phosphogluconolactonase, which is encoded by the pgl gene (ybhE ORF).
Abstract:
The present invention relates to a method for producing L-amino acids, such as L-tryptophan, L-phenylalanine and L-tyrosine, using a bacterium belonging to the genus Escherichia, and wherein the L-amino acid productivity of said bacterium is enhanced by enhancing an activity of PEP carboxykinase, which is coded by the pckA gene.
Abstract:
A Mob- plasmid having a RSF1010 replicon, comprising a gene coding for Rep protein and said plasmid has been modified to inactivate gene related to mobilization ability. The present invention also describes a bacterium having an ability to produce useful metabolites, comprising the plasmid and said bacterium lack active thymidylate synthase coded by thyA gene and thymidine kinase coded by tdk gene, and a method for producing useful metabolites, such as native or recombinant proteins, enzymes, L-amino acids, nucleosides and nucleotides, organic acid, vitamins, using the bacterium.
Abstract:
The present invention provides a method for producing a non-aromatic L-amino acid 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 the csrA gene.
Abstract:
The present invention relates to a method for producing L-amino acids, such as L-tryptophan, L-phenylalanine and L-tyrosine, using a bacterium belonging to the genus Escherichia, and wherein the L-amino acid productivity of said bacterium is enhanced by enhancing an activity of PEP carboxykinase, which is coded by the pckA gene.