Patents by Inventor Frank J. Ruzicka

Frank J. Ruzicka 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).

  • Patent number: 7456271
    Abstract: There are provided nucleic acids, including isolated DNA molecules, which encode glutamate 2,3-aminomutase enzymes, polypeptides produced from such nucleic acids and methods of making the nucleic acids and polypeptides. There are further provided methods of producing ?-glutamate from glutamate using glutamate 2,3-aminomutase.
    Type: Grant
    Filed: October 11, 2006
    Date of Patent: November 25, 2008
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Perry A. Frey, Frank J. Ruzicka
  • Patent number: 7452701
    Abstract: Purified ?-amino acids are of considerable interest in the preparation of pharmacologically active compounds and industrial precursors. Although enantiomerically pure ?-amino acids can be produced by standard chemical synthesis, this traditional approach is time consuming, requires expensive starting materials, and results in a racemic mixture which must be purified further. However, DNA molecules encoding lysine 2,3-aminomutase can be used to prepare ?-amino acids by methods that avoid the pitfalls of chemical synthesis. The present invention provides a method of producing enantiomerically pure ?-amino acids from ?-amino acids comprising catalyzing the conversion of an ?-amino acid to a corresponding ?-amino acid by utilizing a lysine 2,3-aminomutase as the catalyst.
    Type: Grant
    Filed: September 5, 2002
    Date of Patent: November 18, 2008
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Perry A. Frey, Frank J. Ruzicka
  • Publication number: 20080268510
    Abstract: Purified ?-amino acids are of considerable interest in the preparation of pharmacologically active compounds. Although enantiomerically pure ?-amino acids, such as L-?-lysine, can be produced by standard chemical synthesis, this traditional approach is time consuming, requires expensive starting materials, and results in a racemic mixture which must be purified further. However, DNA molecules encoding lysine 2,3-aminomutase can be used to prepare L-?-lysine by methods that avoid the pitfalls of chemical synthesis. In particular, L-?-lysine can be synthesized by cultures of host cells that express recombinant lysine 2,3-aminomutase. Alternatively, such recombinant host cells can provide a source for isolating quantities of lysine 2,3-aminomutase, which in turn, can be used to produce L-?-lysine in vitro.
    Type: Application
    Filed: November 13, 2007
    Publication date: October 30, 2008
    Inventors: Perry A. Frey, Frank J. Ruzicka
  • Patent number: 7354745
    Abstract: Purified ?-amino acids are of considerable interest in the preparation of pharmacologically active compounds. Although enantiomerically pure ?-amino acids, such as L-?-lysine, can be produced by standard chemical synthesis, this traditional approach is time consuming, requires expensive starting materials, and results in a racemic mixture which must be purified further. However, DNA molecules encoding lysine 2,3-aminomutase can be used to prepare L-?-lysine by methods that avoid the pitfalls of chemical synthesis. In particular, L-?-lysine can be synthesized by cultures of host cells that express recombinant lysine 2,3-aminomutase. Alternatively, such recombinant host cells can provide a source for isolating quantities of lysine 2,3-aminomutase, which in turn, can be used to produce L-?-lysine in vitro.
    Type: Grant
    Filed: May 1, 2001
    Date of Patent: April 8, 2008
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Perry A. Frey, Frank J. Ruzicka
  • Publication number: 20030113882
    Abstract: Purified &bgr;-amino acids are of considerable interest in the preparation of pharmacologically active compounds and industrial precursors. Although enantiomerically pure &bgr;-amino acids can be produced by standard chemical synthesis, this traditional approach is time consuming, requires expensive starting materials, and results in a racemic mixture which must be purified further. However, DNA molecules encoding lysine 2,3-aminomutase can be used to prepare &bgr;-amino acids by methods that avoid the pitfalls of chemical synthesis. The present invention provides a method of producing enantiomerically pure &bgr;-amino acids from &agr;-amino acids comprising catalyzing the conversion of an &agr;-amino acid to a corresponding &bgr;-amino acid by utilizing a lysine 2,3-aminomutase as the catalyst.
    Type: Application
    Filed: September 5, 2002
    Publication date: June 19, 2003
    Applicant: Wisconsin Alumni Research Foundation
    Inventors: Perry A. Frey, Frank J. Ruzicka
  • Publication number: 20020173637
    Abstract: Purified &bgr;-amino acids are of considerable interest in the preparation of pharmacologically active compounds. Although enantiomerically pure &bgr;-amino acids, such as L-&bgr;-lysine, can be produced by standard chemical synthesis, this traditional approach is time consuming, requires expensive starting materials, and results in a racemic mixture which must be purified further. However, DNA molecules encoding lysine 2,3-aminomutase can be used to prepare L-&bgr;-lysine by methods that avoid the pitfalls of chemical synthesis. In particular, L-&bgr;-lysine can be synthesized by cultures of host cells that express recombinant lysine 2,3-aminomutase. Alternatively, such recombinant host cells can provide a source for isolating quantities of lysine 2,3-aminomutase, which in turn, can be used to produce L-&bgr;-lysine in vitro.
    Type: Application
    Filed: May 1, 2001
    Publication date: November 21, 2002
    Applicant: Wisconsin Alumni Research Foundation (WARF).
    Inventors: Perry A. Frey, Frank J. Ruzicka
  • Patent number: 6248874
    Abstract: Purified &bgr;-amino acids are of considerable interest in the preparation of pharmacologically active compounds. Although enantiomerically pure &bgr;-amino acids, such as L-&bgr;-lysine, can be produced by standard chemical synthesis, this traditional approach is time consuming, requires expensive starting materials, and results in a racemic mixture which must be purified further. However, DNA molecules encoding lysine 2,3-aminomutase can be used to prepare L-&bgr;-lysine by methods that avoid the pitfalls of chemical synthesis. In particular, L-&bgr;-lysine can be synthesized by cultures of host cells that express recombinant lysine 2,3-aminomutase. Alternatively, such recombinant host cells can provide a source for isolating quantities of lysine 2,3-aminomutase, which in turn, can be used to produce L-&bgr;-lysine in vitro.
    Type: Grant
    Filed: June 11, 1999
    Date of Patent: June 19, 2001
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Perry A. Frey, Frank J. Ruzicka