Patents by Inventor Birgit Klassen

Birgit Klassen 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).

  • Nucleotide sequences that encode deregulated phosphoglycerate dehydrogenases of coryneform bacteria and method for producing L-serine
    Patent number: 7732176
    Abstract: The invention relates to nucleotide sequences of coryneform bacteria that encode proteins that are involved in the biosynthesis of L-serine and to a method for producing L-serine. According to the invention, at least 79 amino acids at the C terminus of the wild-type serA sequence are deleted, thereby producing a 3-phosphoglycerate dehydrogenase having a reduced feedback inhibition by L-serine vis-à-vis the wild-type sequence.
    Type: Grant
    Filed: July 8, 2003
    Date of Patent: June 8, 2010
    Assignees: Forschungszentrum Julich GmbH, Amino GmbH
    Inventors: Lothar Eggeling, Petra Peters-Wendisch, Roman Netzer, Hermann Sahm, Robert Faurie, Birgit Klassen
  • Nucleotide sequences that encode deregulated phosphoglycerate dehydrogenases of coryneform bacteria and method for producing l-serine
    Publication number: 20060106207
    Abstract: The invention relates to nucleotide sequences of coryneform bacteria that encode proteins that are involved in the biosynthesis of L-serine and to a method for producing L-serine. According to the invention, at least 79 amino acids at the C terminus of the wild-type serA sequence are deleted, thereby producing a 3-phosphoglycerate dehydrogenase having a reduced feedback inhibition by L-serine vis-à-vis the wild-type sequence.
    Type: Application
    Filed: July 8, 2003
    Publication date: May 18, 2006
    Inventors: Lothar Eggeling, Petra Peters-Wendisch, Roman Netzer, Hermann Sahm, Robert Faurie, Birgit Klassen