Patents by Inventor Susan Y. Louie

Susan Y. Louie 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).

  • Alanine 2,3-aminomutases and related polynucleotides
    Patent number: 7790432
    Abstract: The present invention is directed to polypeptides that have enhanced alanine 2,3-aminomutase (AAM) activity and/or thermostability relative to the wild-type enzymes that have incidental AAM activity as a result of cross reactivity with alanine. In addition, the present invention is directed to a polynucleotides that encodes for the AAM polypeptides of the present invention, to nucleic acid sequences comprising the polynucleotides, to expression vectors comprising the polynucleotides operatively linked to a promoter, to host cells transformed to express the AAM polypeptides, and to a method for producing the AAM polypeptides of the present invention.
    Type: Grant
    Filed: October 25, 2005
    Date of Patent: September 7, 2010
    Assignee: Codexis, Inc.
    Inventors: Ranjini Chatterjee, Kenneth W. Mitchell, Susan Y. Louie, Richard J. Fox, Michelle Chen
  • Alanine 2,3-aminomutases and related polynucleotides
    Publication number: 20100099143
    Abstract: The present invention is directed to polypeptides that have enhanced alanine 2,3-aminomutase (AAM) activity and/or thermostability relative to the wild-type enzymes that have incidental AAM activity as a result of cross reactivity with alanine. In addition, the present invention is directed to a polynucleotides that encodes for the AAM polypeptides of the present invention, to nucleic acid sequences comprising the polynucleotides, to expression vectors comprising the polynucleotides operatively linked to a promoter, to host cells transformed to express the AAM polypeptides, and to a method for producing the AAM polypeptides of the present invention.
    Type: Application
    Filed: October 25, 2005
    Publication date: April 22, 2010
    Inventors: Ranjini Chatterjee, Kenneth W. Mitchell, Susan Y. Louie, Richard J. Fox, Michelle Chen