Patents by Inventor Shengying Li

Shengying Li 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: 20210292733
    Abstract: The present invention relates to biocatalysts catalyzing the formation of ?-olefins. In particular, the invention provides polypeptides with improved decarboxylase activity on C10-C16 free fatty acids, more particularly on C10 or C12 free fatty acids, as compared to the P450 fatty acid decarboxylase isolated from the Staphylococcus massiliensis strain S46 (Sm46). The invention further provides recombinant nucleic acids and vectors comprising the coding sequences encoding these polypeptides, genetically engineered host cells expressing said polypeptides and methods for the production of C9-C15 ?-olefins, more particularly C9 or C11 ?-olefins, using said polypeptides or said host cells.
    Type: Application
    Filed: July 25, 2019
    Publication date: September 23, 2021
    Applicants: TOTAL RAFFINAGE CHIMIE, QINGDAO INSTITUTE OF BIOENERGY AND BIOPROCESS TECHNOLOGY (QIBEBT)
    Inventors: Shengying LI, Huifang XU, Linlin NING, Laurent FOURAGE
  • Patent number: 10407638
    Abstract: The present invention relates to the biosynthesis of ?-olefins. In particular, the invention provides methods for the production of medium-chain ?-olefins, more particularly C11 ?-olefins, using a polypeptide with decarboxylase activity on free fatty acids with 8 to 14 carbons, in particular on C8-C12 free fatty acids, more particularly on C12 free fatty acids, or a genetically engineered host cell expressing or overexpressing said polypeptide.
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: September 10, 2019
    Assignees: Total Raffinage Chimie, Qingdao Institute of Bioenergy and Bioprocess Technology
    Inventors: Laurent Fourage, Frédéric Laeuffer, Henri Strub, Yun Wang, Jian Xu, Huifang Xu, Shengying Li
  • Publication number: 20180171252
    Abstract: The present invention relates to the biosynthesis of ?-olefins. In particular, the invention provides methods for the production of medium-chain ?-olefins, more particularly C11 ?-olefins, using a polypeptide with decarboxylase activity on free fatty acids with 8 to 14 carbons, in particular on C8-C12 free fatty acids, more particularly on C12 free fatty acids, or a genetically engineered host cell expressing or overexpressing said polypeptide.
    Type: Application
    Filed: June 30, 2016
    Publication date: June 21, 2018
    Applicants: TOTAL RAFFINAGE CHIMIE, QINGDAO INSTITUTE OF BIOENERGY AND BIOPROCESS TECHNOLOGY (QIBEBT)
    Inventors: Laurent FOURAGE, Frédéric LAEUFFER, Henri STRUB, Yun WANG, Jian XU, Huifang HU, Shengying LI
  • Patent number: 9650656
    Abstract: The biosynthesis of fungal bicyclo[2.2.2]diazaoctane indole alkaloids with a wide spectrum of biological activities have attracted increasing interest. Their intriguing mode of assembly has long been proposed to feature a non-ribosomal peptide synthetase, a presumed intramolecular Diels-Alderase, a variant number of prenyltransferases, and a series of oxidases responsible for the diverse tailoring modifications of their cyclodipeptide-based structural core. Until recently, the details of these biosynthetic pathways have remained largely unknown due to lack of information on the fungal derived biosynthetic gene clusters. Herein, we report a comparative analysis of four natural product metabolic systems of a select group of bicyclo[2.2.2]diazaoctane indole alkaloids including (+)/(?)-notoamide, paraherquamide and malbrancheamide, in which we propose an enzyme for each step in the biosynthetic pathway based on deep annotation and on-going biochemical studies.
    Type: Grant
    Filed: April 3, 2013
    Date of Patent: May 16, 2017
    Assignees: THE REGENTS OF THE UNIVERSITY OF MICHIGAN, COLORADO STATE UNIVERSITY RESEARCH FOUNDATION
    Inventors: Shengying Li, Krithika Anand Srinivasan, Robert M. Williams, David H. Sherman
  • Publication number: 20150044735
    Abstract: The biosynthesis of fungal bicyclo[2.2.2]diazaoctane indole alkaloids with a wide spectrum of biological activities have attracted increasing interest. Their intriguing mode of assembly has long been proposed to feature a non-ribosomal peptide synthetase, a presumed intramolecular Diels-Alderase, a variant number of prenyltransferases, and a series of oxidases responsible for the diverse tailoring modifications of their cyclodipeptide-based structural core. Until recently, the details of these biosynthetic pathways have remained largely unknown due to lack of information on the fungal derived biosynthetic gene clusters. Herein, we report a comparative analysis of four natural product metabolic systems of a select group of bicyclo[2.2.2]diazaoctane indole alkaloids including (+)/(?)-notoamide, paraherquamide and malbrancheamide, in which we propose an enzyme for each step in the biosynthetic pathway based on deep annotation and on-going biochemical studies.
    Type: Application
    Filed: April 3, 2013
    Publication date: February 12, 2015
    Inventors: Shengying Li, Krithika Anand Srinivasan, Robert M. Williams, David H. Sherman
  • Publication number: 20120190635
    Abstract: The present invention provides regio- and stereoselective oxidation of unactivated C—H bonds using an engineered mutant cytochrome P450 monooxygenase and an engineered substrate.
    Type: Application
    Filed: September 27, 2010
    Publication date: July 26, 2012
    Applicant: THE REGENTS OF THE UNIVERSITY OF MICHIGAN
    Inventors: Shengying Li, David H. Sherman, John Montgomery, Mani R. Chaulagain, Allison R. Knauff
  • Publication number: 20090081758
    Abstract: The present invention provides chimeric cytochrome P450 enzymes fused to heterologous reductase domains to generate single-component, self-sufficient, more cost-effective and catalytically more active biosynthetic P450 monooxygenases.
    Type: Application
    Filed: September 22, 2008
    Publication date: March 26, 2009
    Applicant: THE REGENTS OF THE UNIVERSITY OF MICHIGAN
    Inventors: Shengying Li, David H. Sherman