Patents by Inventor Da Duan
Da Duan 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).
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Patent number: 12540314Abstract: The present invention provides engineered peroxidase enzymes, polypeptides having peroxidase activity, and polynucleotides encoding these enzymes, as well as vectors and host cells comprising these polynucleotides and polypeptides. Methods for producing peroxidase enzymes are also provided. The present invention further provides compositions comprising the peroxidase enzymes and methods of using the engineered peroxidase enzymes. The present invention finds particular use in the production of pharmaceutical and other compounds.Type: GrantFiled: May 6, 2024Date of Patent: February 3, 2026Assignee: Codexis, Inc.Inventors: Da Duan, Auric Anthony Sowell-Kantz, Aksiniya Lyubenova Petkova, Jovana Nazor, Nandhitha Subramanian, Oscar Alvizo
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Publication number: 20260009012Abstract: The present invention provides engineered phosphopentomutase (PPM) enzymes, polypeptides having PPM activity, and polynucleotides encoding these enzymes, as well as vectors and host cells comprising these polynucleotides and polypeptides. Methods for producing PPM enzymes are also provided. The present invention further provides compositions comprising the PPM enzymes and methods of using the engineered PPM enzymes. The present invention finds particular use in the production of pharmaceutical compounds.Type: ApplicationFiled: September 15, 2025Publication date: January 8, 2026Applicant: Codexis, Inc.Inventors: Scott J. Novick, Xiang Yi, Nikki Dellas, Oscar Alvizo, Jovana Nazor, Da Duan, Vesna Mitchell, Jonathan Vroom, Santhosh Sivaramakrishnan, Nandhitha Subramanian, Jeffrey C. Moore, Mark Huffman, Agustina Rodriguez-Granillo, Deeptak Verma, Grant S. Murphy, Nicholas Marshall, Jay Russell, Keith A. Canada
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Patent number: 12503688Abstract: The present invention provides engineered transaminase polypeptides and compositions thereof, as well as polynucleotides encoding the engineered transaminase polypeptides. Methods for producing transaminase enzymes are also provided. In some embodiments, the engineered transaminase polypeptides are optimized to provide improved enzyme properties under minimal aqueous conditions in wet organic solvents.Type: GrantFiled: January 13, 2020Date of Patent: December 23, 2025Assignee: Codexis, Inc.Inventors: Jovana Nazor, Christopher Michael Micklitsch, Da Duan, Auric Anthony Sowell-Kantz, Steven Miller, Birgit Kosjek, Iman Farasat, Nicholas M. Marshall
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Patent number: 12480111Abstract: The present invention provides engineered penicillin G acylase (PGA) enzymes, polynucleotides encoding the enzymes, compositions comprising the enzymes, and methods of using the engineered PGA enzymes.Type: GrantFiled: March 23, 2023Date of Patent: November 25, 2025Assignee: Codexis, Inc.Inventors: Rama Voladri, Christopher Michael Micklitsch, Oscar Alvizo, Jovana Nazor, Da Duan, Judy Victoria Antonio Viduya, Stephan Jenne, Chihui An, Keith Allen Canada, Paul N. Devine, Iman Farasat, Anna Fryszkowska, Katrina W. Lexa, Robert Kevin Orr
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Patent number: 12473557Abstract: The present invention provides engineered guanylate kinase (GK) enzymes, polypeptides having GK activity, and polynucleotides encoding these enzymes, as well as vectors and host cells comprising these polynucleotides and polypeptides. Methods for producing GK enzymes are also provided. The present invention further provides compositions comprising the GK enzymes and methods of using the engineered GK enzymes. The present invention finds particular use in the production of pharmaceutical compounds.Type: GrantFiled: April 1, 2022Date of Patent: November 18, 2025Assignee: Codexis, Inc.Inventors: Da Duan, Auric Anthony Sowell-Kantz, Aksiniya Lyubenova Petkova, Oscar Alvizo
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Patent number: 12460195Abstract: The present invention provides engineered deoxyribose-phosphate aldolase polypeptides useful under industrial process conditions for the production of pharmaceutical and fine chemical compounds.Type: GrantFiled: November 7, 2023Date of Patent: November 4, 2025Assignee: Codexis, Inc.Inventors: Da Duan, Oscar Alvizo, Jovana Nazor, Harvinder Chagger Maniar, James Nicholas Riggins, Jonathan Vroom, Santhosh Sivaramakrishnan, Hao Yang, Anna Fryszkowska, Mark A. Huffman, Joshua N. Kolev, Iman Farasat, Agustina Rodriguez-Granillo, Deeptak Verma
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Patent number: 12421509Abstract: The present invention provides engineered phosphopentomutase (PPM) enzymes, polypeptides having PPM activity, and polynucleotides encoding these enzymes, as well as vectors and host cells comprising these polynucleotides and polypeptides. Methods for producing PPM enzymes are also provided. The present invention further provides compositions comprising the PPM enzymes and methods of using the engineered PPM enzymes. The present invention finds particular use in the production of pharmaceutical compounds.Type: GrantFiled: September 14, 2023Date of Patent: September 23, 2025Assignee: Codexis, Inc.Inventors: Scott J. Novick, Xiang Yi, Nikki Dellas, Oscar Alvizo, Jovana Nazor, Da Duan, Vesna Mitchell, Jonathan Vroom, Santhosh Sivaramakrishnan, Nandhitha Subramanian, Jeffrey C. Moore, Mark Huffman, Agustina Rodriguez-Granillo, Deeptak Verma, Grant S. Murphy, Nicholas Marshall, Jay Russell, Keith A. Canada
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Publication number: 20250207171Abstract: The present invention provides engineered ketoreductase and phosphite dehydrogenase enzymes having improved properties as compared to a naturally occurring wild-type ketoreductase and phosphite dehydrogenase enzymes, as well as polynucleotides encoding the engineered ketoreductase and phosphite dehydrogenase enzymes, host cells capable of expressing the engineered ketoreductase and phosphite dehydrogenase enzymes, and methods of using the engineered ketoreductase and phosphite dehydrogenase enzymes to synthesize a chiral catalyst used in the synthesis of antiviral compounds, such as nucleoside inhibitors. The present invention further provides methods of using the engineered enzymes to deracemize a chiral alcohol in a one-pot, multi-enzyme system.Type: ApplicationFiled: March 14, 2025Publication date: June 26, 2025Inventors: Jeffrey C. Moore, Jack Liang, Jonathan Penfield, Jovana Nazor, Nikki Dellas, Vesna Mitchell, Da Duan, Iman Farasat, Agustina Rodriguez-Granillo, Grant Murphy, Nicholas Marshall
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Patent number: 12252723Abstract: The present invention provides engineered ketoreductase and phosphite dehydrogenase enzymes having improved properties as compared to a naturally occurring wild-type ketoreductase and phosphite dehydrogenase enzymes, as well as polynucleotides encoding the engineered ketoreductase and phosphite dehydrogenase enzymes, host cells capable of expressing the engineered ketoreductase and phosphite dehydrogenase enzymes, and methods of using the engineered ketoreductase and phosphite dehydrogenase enzymes to synthesize a chiral catalyst used in the synthesis of antiviral compounds, such as nucleoside inhibitors. The present invention further provides methods of using the engineered enzymes to deracemize a chiral alcohol in a one-pot, multi-enzyme system.Type: GrantFiled: July 14, 2023Date of Patent: March 18, 2025Assignee: Codexis, Inc.Inventors: Jeffrey C. Moore, Jack Liang, Jonathan Penfield, Jovana Nazor, Nikki Dellas, Vesna Mitchell, Da Duan, Iman Farasat, Agustina Rodriguez-Granillo, Grant Murphy, Nicholas Marshall
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Publication number: 20250027094Abstract: The present invention provides engineered purine nucleoside phosphorylase (PNP) enzymes, polypeptides having PNP activity, and polynucleotides encoding these enzymes, as well as vectors and host cells comprising these polynucleotides and polypeptides. Methods for producing PNP enzymes are also provided. The present invention further provides compositions comprising the PNP enzymes and methods of using the engineered PNP enzymes. The present invention finds particular use in the production of pharmaceutical compounds.Type: ApplicationFiled: October 4, 2024Publication date: January 23, 2025Inventors: Scott J. Novick, Nikki Dellas, Vesna Mitchell, Da Duan, Jovana Nazor, Oscar Alvizo, Auric Anthony Sowell-Kantz, Jeffrey C. Moore, Mark A. Huffman, Agustina Rodriguez-Granillo, Deeptak Verma, Nicholas M. Marshall, Jay H. Russell, Keith A. Canada
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Publication number: 20240409916Abstract: The present invention provides engineered penicillin G acylase (PGA) enzymes, polynucleotides encoding the enzymes, compositions comprising the enzymes, and methods of using the engineered PGA enzymes.Type: ApplicationFiled: August 23, 2024Publication date: December 12, 2024Inventors: Oscar Alvizo, David Elgart, Robert Kevin Orr, James Nicholas Riggins, Anna Fryszkowska, Katrina W. Lexa, Xiang Yi, Da Duan, Courtney Dianne Moffett, Nikki Dellas, Vesna Mitchell
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Publication number: 20240409912Abstract: The present disclosure provides engineered protease polypeptides, recombinant polynucleotides encoding the engineered protease polypeptides, and uses of the engineered protease polypeptides in therapeutic applications.Type: ApplicationFiled: May 30, 2024Publication date: December 12, 2024Inventors: Chinping Chng, Ruth L. Cong, Da Duan, Brian Ferrer, Ravi David Garcia, Nikki D. Kruse, Hirdesh Kumar, Stephen Joshua Macaso Millet, Trica Windgassen, Liang Zhu
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Publication number: 20240384251Abstract: The present invention provides engineered amylase polypeptides and compositions thereof. The engineered amylase polypeptides have been optimized to provide improved thermostability, protease stability, and stability under a range of pH conditions, including acidic (pH<7) conditions. The invention also relates to the use of the compositions comprising the engineered amylase polypeptides for therapeutic and/or nutritional purposes. The present invention also provides polynucleotides encoding the engineered amylase polypeptides, as well as methods for making the engineered polynucleotides and amylase polypeptides.Type: ApplicationFiled: July 30, 2024Publication date: November 21, 2024Inventors: Chinping Chng, Nikki Dellas, Da Duan, Ravi David Garcia, Harvinder Chagger Maniar
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Patent number: 12110493Abstract: The present invention provides engineered purine nucleoside phosphorylase (PNP) enzymes, polypeptides having PNP activity, and polynucleotides encoding these enzymes, as well as vectors and host cells comprising these polynucleotides and polypeptides. Methods for producing PNP enzymes are also provided. The present invention further provides compositions comprising the PNP enzymes and methods of using the engineered PNP enzymes. The present invention finds particular use in the production of pharmaceutical compounds.Type: GrantFiled: September 30, 2021Date of Patent: October 8, 2024Assignee: Codexis, Inc.Inventors: Scott J. Novick, Nikki Dellas, Vesna Mitchell, Da Duan, Jovana Nazor, Oscar Alvizo, Auric Anthony Sowell-Kantz, Jeffrey C. Moore, Mark A. Huffman, Agustina Rodriguez-Granillo, Deeptak Verma, Nicholas M. Marshall, Jay H. Russell, Keith A. Canada
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Publication number: 20240301367Abstract: The present invention provides engineered peroxidase enzymes, polypeptides having peroxidase activity, and polynucleotides encoding these enzymes, as well as vectors and host cells comprising these polynucleotides and polypeptides. Methods for producing peroxidase enzymes are also provided. The present invention further provides compositions comprising the peroxidase enzymes and methods of using the engineered peroxidase enzymes. The present invention finds particular use in the production of pharmaceutical and other compounds.Type: ApplicationFiled: May 6, 2024Publication date: September 12, 2024Applicant: Codexis, Inc.Inventors: Da Duan, Auric Anthony Sowell-Kantz, Aksiniya Lyubenova Petkova, Jovana Nazor, Nandhitha Subramanian, Oscar Alvizo
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Patent number: 12084697Abstract: The present invention provides engineered penicillin G acylase (PGA) enzymes, polynucleotides encoding the enzymes, compositions comprising the enzymes, and methods of using the engineered PGA enzymes.Type: GrantFiled: January 23, 2023Date of Patent: September 10, 2024Assignee: Codexis, Inc.Inventors: Oscar Alvizo, David Elgart, Robert Kevin Orr, James Nicholas Riggins, Anna Fryszkowska, Katrina W. Lexa, Xiang Yi, Da Duan, Courtney Dianne Moffett, Nikki Dellas, Vesna Mitchell
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Patent number: 12071642Abstract: The present invention provides engineered amylase polypeptides and compositions thereof. The engineered amylase polypeptides have been optimized to provide improved thermostability, protease stability, and stability under a range of pH conditions, including acidic (pH<7) conditions. The invention also relates to the use of the compositions comprising the engineered amylase polypeptides for therapeutic and/or nutritional purposes. The present invention also provides polynucleotides encoding the engineered amylase polypeptides, as well as methods for making the engineered polynucleotides and amylase polypeptides.Type: GrantFiled: September 6, 2023Date of Patent: August 27, 2024Assignees: Codexis, Inc., Société des Produits Nestlé S.A.Inventors: Chinping Chng, Nikki Dellas, Da Duan, Ravi David Garcia, Harvinder Chagger Maniar
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Patent number: 12012620Abstract: The present invention provides engineered peroxidase enzymes, polypeptides having peroxidase activity, and polynucleotides encoding these enzymes, as well as vectors and host cells comprising these polynucleotides and polypeptides. Methods for producing peroxidase enzymes are also provided. The present invention further provides compositions comprising the peroxidase enzymes and methods of using the engineered peroxidase enzymes. The present invention finds particular use in the production of pharmaceutical and other compounds.Type: GrantFiled: September 3, 2020Date of Patent: June 18, 2024Assignee: Codexis, Inc.Inventors: Da Duan, Auric Anthony Sowell-Kantz, Aksiniya Lyubenova Petkova, Jovana Nazor, Nandhitha Subramanian, Oscar Alvizo
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Publication number: 20240158766Abstract: The present invention provides engineered adenylate kinase (AdK) enzymes, polypeptides having AdK activity, and polynucleotides encoding these enzymes, as well as vectors and host cells comprising these polynucleotides and polypeptides. Methods for producing AdK enzymes are also provided. The present invention further provides compositions comprising the AdK enzymes and methods of using the engineered AdK enzymes. The present invention finds particular use in the production of pharmaceutical compounds.Type: ApplicationFiled: January 16, 2024Publication date: May 16, 2024Inventors: Da Duan, Auric Anthony Sowell-Kantz, Aksiniya Lyubenova Petkova, Oscar Alvizo
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Publication number: 20240076647Abstract: The present invention provides engineered deoxyribose-phosphate aldolase polypeptides useful under industrial process conditions for the production of pharmaceutical and fine chemical compounds.Type: ApplicationFiled: November 7, 2023Publication date: March 7, 2024Inventors: Da Duan, Oscar Alvizo, Jovana Nazor, Harvinder Chagger Maniar, James Nicholas Riggins, Jonathan Vroom, Santhosh Sivaramakrishnan, Hao Yang, Anna Fryszkowska, Mark A. Huffman, Joshua N. Kolev, Iman Farasat, Agustina Rodriguez-Granillo, Deeptak Verma