Patents by Inventor Irina Biryukova

Irina Biryukova has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method for producing an L-amino acid using a bacterium having enhanced expression of the pckA gene
    Publication number: 20060035348
    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 a PEP carboxykinase activity, which is coded by the pckA gene.
    Type: Application
    Filed: September 27, 2005
    Publication date: February 16, 2006
    Inventors: Andrey Gulevich, Irina Biryukova, Danila Zimenkov, Aleksandra Skorokhodova, Aleksandr Kivero, Alla Belareva, Sergei Mashko
  • RSF1010 derivative Mob' plasmid containing no antibiotic resistance gene, bacterium comprising the plasmid and method for producing useful metabolites
    Publication number: 20060014257
    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, vitamins, using the bacterium.
    Type: Application
    Filed: June 24, 2005
    Publication date: January 19, 2006
    Inventors: Joanna Katashkina, Aleksandra Skorokhodova, Danila Zimenkov, Andrey Gulevich, Lopes Errais, Irina Biryukova, Aleksandr Mironov, Sergei Mashko
  • Method for producing L-amino acids
    Publication number: 20050191684
    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).
    Type: Application
    Filed: February 23, 2005
    Publication date: September 1, 2005
    Inventors: Danila Zimenkov, Andrey Gulevich, Aleksandra Skorokhodova, Joanna Katashkina, Aleksandr Kivero, Irina Biryukova, Vera Doroshenko, Sergei Mashko