Patents by Inventor Xiyun Zhang

Xiyun Zhang 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).

  • Publication number: 20230120624
    Abstract: The present disclosure provides engineered transaminase enzymes having improved properties as compared to a naturally occurring wild-type transaminase enzyme. Also provided are polynucleotides encoding the engineered transaminase enzymes, host cells capable of expressing the engineered transaminase enzymes, and methods of using the engineered transaminase enzymes to synthesize a variety of chiral compounds.
    Type: Application
    Filed: November 30, 2022
    Publication date: April 20, 2023
    Inventors: Ish K. Dhawan, Gregory Miller, Xiyun Zhang
  • Publication number: 20230108132
    Abstract: The invention is directed to novel variant glucoamylases.
    Type: Application
    Filed: July 22, 2022
    Publication date: April 6, 2023
    Applicant: Fornia BioSolutions, Inc.
    Inventors: Xiyun ZHANG, Jie YANG, Goutami BANERJEE, Khin OO, Marielle De Jesus PALATINO, Eric Lin HU, Imad N. SAWAYA, Tatsuya FUKUSHIMA, Jijiao ZENG, Wenhua LU
  • Patent number: 11591578
    Abstract: The present invention provides improved P450-BM3 variants with improved activity. In some embodiments, the P450-BM3 variants exhibit improved activity over a wide range of substrates.
    Type: Grant
    Filed: March 16, 2021
    Date of Patent: February 28, 2023
    Assignee: Codexis, Inc.
    Inventors: Robert Osborne, Vesna Mitchell, Khin Yu Naing Htwe, Xiyun Zhang, Erika M. Milczek, Jeffrey C. Moore
  • Publication number: 20230048421
    Abstract: Disclosed are methods for identifying bio-molecules with desired properties (or which are most suitable for a round of directed evolution) from complex bio-molecule libraries or sets of such libraries. Some embodiments of the present disclosure provide methods for virtually screening proteins for beneficial properties. Some embodiments of the present disclosure provide methods for virtually screening enzymes for desired activity and/or selectivity for catalytic reactions involving particular substrates. Some embodiments combine screening and directed evolution to design and develop proteins and enzymes having desired properties. Systems and computer program products implementing the methods are also provided.
    Type: Application
    Filed: November 2, 2022
    Publication date: February 16, 2023
    Applicant: Codexis, Inc.
    Inventors: Xiyun Zhang, Russell Javiniar Sarmiento, Donald Scott Baskerville, Gjalt W. Huisman
  • Patent number: 11542485
    Abstract: The present disclosure provides engineered transaminase enzymes having improved properties as compared to a naturally occurring wild-type transaminase enzyme. Also provided are polynucleotides encoding the engineered transaminase enzymes, host cells capable of expressing the engineered transaminase enzymes, and methods of using the engineered transaminase enzymes to synthesize a variety of chiral compounds.
    Type: Grant
    Filed: April 6, 2021
    Date of Patent: January 3, 2023
    Assignee: Codexis, Inc.
    Inventors: Ish K. Dhawan, Gregory Miller, Xiyun Zhang
  • Patent number: 11535836
    Abstract: The invention is directed to novel variant glucoamylases.
    Type: Grant
    Filed: November 12, 2019
    Date of Patent: December 27, 2022
    Assignee: Fornia Biosolutions, Inc.
    Inventors: Xiyun Zhang, Jie Yang, Goutami Banerjee, Khin Oo, Marielle De Jesus Palatino, Eric Lin Hu, Imad N. Sawaya, Tatsuya Fukushima, Jijiao Zeng, Wenhua Lu
  • Patent number: 11535845
    Abstract: Disclosed are methods for identifying bio-molecules with desired properties (or which are most suitable for a round of directed evolution) from complex bio-molecule libraries or sets of such libraries. Some embodiments of the present disclosure provide methods for virtually screening proteins for beneficial properties. Some embodiments of the present disclosure provide methods for virtually screening enzymes for desired activity and/or selectivity for catalytic reactions involving particular substrates. Some embodiments combine screening and directed evolution to design and develop proteins and enzymes having desired properties. Systems and computer program products implementing the methods are also provided.
    Type: Grant
    Filed: May 15, 2020
    Date of Patent: December 27, 2022
    Assignee: Codexis, Inc.
    Inventors: Xiyun Zhang, Russell Javiniar Sarmiento, Donald Scott Baskerville, Gjalt W. Huisman
  • Patent number: 11497798
    Abstract: The present invention provides engineered human alpha-galactosidase polypeptides and compositions thereof. The engineered human alpha-galactosidase polypeptides have been optimized to provide improved stability under both acidic (pH<4.5) and basic (pH>7) conditions. The invention also relates to the use of the compositions comprising the engineered human alpha-galactosidase polypeptides for therapeutic purposes.
    Type: Grant
    Filed: August 5, 2020
    Date of Patent: November 15, 2022
    Assignee: Codexis, Inc.
    Inventors: Nicholas J. Agard, Mathew G. Miller, Xiyun Zhang, Gjalt W. Huisman
  • Patent number: 11401515
    Abstract: The present invention provides engineered phenylalanine ammonia-lyase (PAL) polypeptides and compositions thereof, as well as polynucleotides encoding the engineered phenylalanine ammonia-lyase (PAL) polypeptides.
    Type: Grant
    Filed: March 26, 2020
    Date of Patent: August 2, 2022
    Assignee: Codexis, Inc.
    Inventors: Gjalt W. Huisman, Nicholas J. Agard, Benjamin Mijts, Jonathan Vroom, Xiyun Zhang
  • Publication number: 20220238179
    Abstract: Disclosed are methods for building a sequence activity model with reference to structural data, which model can be used to guide directed evolution of proteins having beneficial properties. Some embodiments use genetic algorithms and structural data to filter out uninformative data. Some embodiments use a support vector machine to train the sequence activity model. The filtering and training methods can generate a sequence activity model having higher predictive power than conventional modeling methods. Systems and computer program products implementing the methods are also provided.
    Type: Application
    Filed: April 12, 2022
    Publication date: July 28, 2022
    Inventors: Russell Javiniar Sarmiento, Donald Scott Baskerville, Xiyun Zhang
  • Publication number: 20220220456
    Abstract: The present invention provides engineered transglutaminase enzymes, polynucleotides encoding the enzymes, compositions comprising the enzymes, methods of producing these enzymes, and methods of using the engineered transglutaminase enzymes.
    Type: Application
    Filed: March 28, 2022
    Publication date: July 14, 2022
    Inventors: Jovana Nazor, Jie Yang, Goutami Banerjee, Xiyun Zhang, James Nicholas Riggins, Erika M. Milczek, Jeffrey C. Moore
  • Publication number: 20220204956
    Abstract: The invention is directed to novel variant endoglucanases and their use thereof.
    Type: Application
    Filed: December 20, 2021
    Publication date: June 30, 2022
    Applicant: Fornia BioSolutions, Inc.
    Inventors: Jie Yang, Xiyun Zhang, William Buchanan Porterfield, Wenhua Lu, Khin Oo, Goutami Banerjee, Tatsuya Fukushima, Eric Lin Hu
  • Publication number: 20220195410
    Abstract: The present invention relates to variant xylanase enzymes and their use thereof.
    Type: Application
    Filed: December 16, 2021
    Publication date: June 23, 2022
    Applicant: Fornia BioSolutions, Inc.
    Inventors: Jie Yang, William Buchanan Porterfield, Xiyun Zhang, Goutami Banerjee, Khin Oo, Wenhua Lu
  • Publication number: 20220169994
    Abstract: The present invention provides improved P450-BM3 variants with improved activity. In some embodiments, the P450-BM3 variants exhibit improved activity over a wide range of substrates.
    Type: Application
    Filed: February 15, 2022
    Publication date: June 2, 2022
    Inventors: Robert Osborne, Vesna Mitchell, Khin Yu Naing Htwe, Xiyun Zhang, Erika M. Milczek, Jeffrey C. Moore
  • Patent number: 11342046
    Abstract: Disclosed are methods for building a sequence activity model with reference to structural data, which model can be used to guide directed evolution of proteins having beneficial properties. Some embodiments use genetic algorithms and structural data to filter out uninformative data. Some embodiments use a support vector machine to train the sequence activity model. The filtering and training methods can generate a sequence activity model having higher predictive power than conventional modeling methods. Systems and computer program products implementing the methods are also provided.
    Type: Grant
    Filed: June 6, 2019
    Date of Patent: May 24, 2022
    Assignee: Codexis, Inc.
    Inventors: Russell Javiniar Sarmiento, Donald Scott Baskerville, Xiyun Zhang
  • Patent number: 11319531
    Abstract: The present invention provides engineered transglutamirase enzymes, polynucleotides encoding the enzymes, compositions comprising the enzymes, methods of producing these enzymes, and methods of using the engineered transglutaminase enzymes.
    Type: Grant
    Filed: November 2, 2018
    Date of Patent: May 3, 2022
    Assignee: Codexis, Inc.
    Inventors: Jovana Nazor, Jie Yang, Goutami Banerjee, Xiyun Zhang, James Nicholas Riggins, Erika M. Milczek, Jeffrey C. Moore
  • Patent number: 11279917
    Abstract: The present invention provides improved P450-BM3 variants with improved activity. In some embodiments, the P450-BM3 variants exhibit improved activity over a wide range of substrates.
    Type: Grant
    Filed: May 13, 2020
    Date of Patent: March 22, 2022
    Assignee: Codexis, Inc.
    Inventors: Robert Osborne, Vesna Mitchell, Khin Yu Naing Htwe, Xiyun Zhang, Erika M. Milczek, Jeffrey C. Moore
  • Patent number: 11278600
    Abstract: The present invention provides engineered human alpha-galactosidase polypeptides and compositions thereof. The engineered human alpha-galactosidase polypeptides have been optimized to provide improved stability under both acidic (pH<4.5) and basic (pH>7) conditions. The invention also relates to the use of the compositions comprising the engineered human alpha-galactosidase polypeptides for therapeutic purposes.
    Type: Grant
    Filed: August 5, 2020
    Date of Patent: March 22, 2022
    Assignee: Codexis, Inc.
    Inventors: Nicholas J. Agard, Mathew G. Miller, Xiyun Zhang, Gjalt W. Huisman
  • Publication number: 20220042004
    Abstract: The present disclosure relates to engineered penicillin G acylase (PGA) enzymes having improved properties, polynucleotides encoding such enzymes, compositions including the enzymes, and methods of using the enzymes.
    Type: Application
    Filed: October 19, 2021
    Publication date: February 10, 2022
    Inventors: Goutami Banerjee, Jie Yang, Xiyun Zhang, Erika M. Milczek, Melissa Ann Mayo, Stephan Jenne
  • Patent number: 11180747
    Abstract: The present disclosure relates to engineered penicillin G acylase (PGA) enzymes having improved properties, polynucleotides encoding such enzymes, compositions including the enzymes, and methods of using the enzymes.
    Type: Grant
    Filed: August 17, 2020
    Date of Patent: November 23, 2021
    Assignee: Codexis, Inc.
    Inventors: Goutami Banerjee, Jie Yang, Xiyun Zhang, Erika M. Milczek, Melissa Ann Mayo, Stephan Jenne