Patents by Inventor Stephen K. Picataggio
Stephen K. Picataggio 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: 9133465Abstract: The present invention relates to methods for the production of ?-3 and/or ?-6 fatty acids in oleaginous yeast. Thus, desaturases and elongases able to catalyze the conversion of linoleic acid (LA) to ?-linolenic acid (GLA); ?-linoleic acid (ALA) to stearidonic acid (STA); GLA to dihomo-?-linoleic acid (DGLA); STA to eicosatetraenoic acid (ETA); DGLA to arachidonic acid (ARA); ETA to eicosapentaenoic acid (EPA); DGLA to ETA; EPA to docosapentaenoic acid (DPA); and ARA to EPA have been introduced into the genome of Yarrowia for synthesis of ARA and EPA.Type: GrantFiled: November 15, 2012Date of Patent: September 15, 2015Assignee: E. I. DU PONT DE NEMOURS AND COMPANYInventors: Stephen K Picataggio, Narendra S Yadav, Quinn Qun Zhu
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Publication number: 20150225743Abstract: Meythylotrophic cells and in particular methanotrophic bacterial cells are genetically engineered to produce isoprene from methane and/or methanol by expressing a heterologous isoprene synthase, and increasing activity of isopentenyl diphosphate isomerase. In addition, upstream DXP pathway enzymes may have increased activity, enzymes in pathways downstream of IPP and DMAPP may have decreased activity, and methane/methanol assimilation pathway enzymes may have increased activity.Type: ApplicationFiled: February 10, 2015Publication date: August 13, 2015Inventors: GAIL K. DONALDSON, Kerry Hollands, Stephen K. Picataggio
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Patent number: 8815566Abstract: Engineered strains of the oleaginous yeast Yarrowia lipolytica capable of producing greater than 25% eicosapentaenoic acid (EPA, an ?-3 polyunsaturated fatty acid) in the total oil fraction are described. These strains comprise various chimeric genes expressing heterologous desaturases, elongases and acyltransferases and optionally comprise various native desaturase and acyltransferase knockouts to enable synthesis and high accumulation of EPA. Production host cells are claimed, as are methods for producing EPA within said host cells.Type: GrantFiled: July 17, 2013Date of Patent: August 26, 2014Assignee: E I du Pont de Nemours and CompanyInventors: Howard Glenn Damude, Peter John Gillies, Daniel Joseph Macool, Stephen K Picataggio, Dana M. Walters Pollak, James John Ragghianti, Zhixiong Xue, Narendra S Yadav, Hongxiang Zhang, Quinn Qun Zhu
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Patent number: 8685682Abstract: An engineered strain of the oleaginous yeast Yarrowia lipolytica capable of producing greater than 5.6% docosahexaenoic acid acid (DHA, an w-3 polyunsaturated fatty acid) in the total oil fraction is described. This strain comprises various chimeric genes expressing heterologous desaturases, elongases and acyltransferases and optionally comprises various native desaturase and acyltransferase knockouts to enable synthesis and high accumulation of DHA. Production host cells are claimed, as are methods for producing DHA within said host cells.Type: GrantFiled: May 14, 2009Date of Patent: April 1, 2014Assignee: E I du Pont de Nemours and CompanyInventors: Howard Glenn Damude, Peter John Gillies, Daniel Joseph Macool, Stephen K Picataggio, James John Ragghianti, John E Seip, Zhixiong Xue, Narendra S Yadav, Hongxiang Zhang, Quinn Qun Zhu
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Patent number: 8685679Abstract: Methods to increase the percent of polyunsaturated fatty acids (PUFAs) within the total lipids and oils of PUFA-producing oleaginous organisms are provided herein, by regulating the activity of specific acyltransferases. Specifically, since oil biosynthesis is expected to compete with polyunsaturation during oleaginy, it is possible to reduce or inactivate the activity of an organism's DAG ATs (e.g., phospholipid:diacylglycerol acyltransferase (PDAT) and/or diacylglycerol acyltransferase 1 (DGAT1) and/or diacylglycerol acyltransferase 2 (DGAT2)) to thereby reduce the overall rate of oil biosynthesis while concomitantly increasing the percent of PUFAs that are incorporated into the lipid and oil fractions. The teachings herein will thereby enable one to engineer a wide variety of oleaginous organisms to produce oils with very specific fatty acid compositions.Type: GrantFiled: July 27, 2005Date of Patent: April 1, 2014Assignee: E I du Pont de Nemours and CompanyInventors: Stephen K. Picataggio, Narendra S. Yadav, Hongxiang Zhang
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Publication number: 20140030772Abstract: Engineered strains of the oleaginous yeast Yarrowia lipolytica capable of producing greater than 25% eicosapentaenoic acid (EPA, an ?-3 polyunsaturated fatty acid) in the total oil fraction are described. These strains comprise various chimeric genes expressing heterologous desaturases, elongases and acyltransferases and optionally comprise various native desaturase and acyltransferase knockouts to enable synthesis and high accumulation of EPA. Production host cells are claimed, as are methods for producing EPA within said host cells.Type: ApplicationFiled: July 17, 2013Publication date: January 30, 2014Applicant: E I DU PONT DE NEMOURS AND COMPANYInventors: Howard Glenn Damude, Peter John Gillies, Daniel Joseph Macool, Stephen K. Picataggio, Dana M. Walters Pollak, James John Ragghianti, Zhixiong Xue, Narendra S. Yadav, Hongxiang Zhang, Quinn Qun Zhu
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Patent number: 8518674Abstract: Engineered strains of the oleaginous yeast Yarrowia lipolytica capable of producing greater than 25% eicosapentaenoic acid (EPA, an ?-3 polyunsaturated fatty acid) in the total oil fraction are described. These strains comprise various chimeric genes expressing heterologous desaturases, elongases and acyltransferases and optionally comprise various native desaturase and acyltransferase knockouts to enable synthesis and high accumulation of EPA. Production host cells are claimed, as are methods for producing EPA within said host cells.Type: GrantFiled: September 29, 2010Date of Patent: August 27, 2013Assignee: E I du Pont de Nemours and CompanyInventors: Howard Glenn Damude, Peter John Gillies, Daniel Joseph Macool, Stephen K. Picataggio, Dana M. Walters Pollak, James John Ragghianti, Zhixiong Xue, Narendra S. Yadav, Hongxiang Zhang, Quinn Qun Zhu
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Patent number: 8399242Abstract: The present invention relates to methods for the production of ?-3 and/or ?-6 fatty acids in oleaginous yeast. Thus, desaturases and elongases able to catalyze the conversion of linoleic acid (LA) to ?-linolenic acid (GLA); ?-linoleic acid (ALA) to stearidonic acid (STA); GLA to dihomo-?-linoleic acid (DGLA); STA to eicosatetraenoic acid (ETA); DGLA to arachidonic acid (ARA); ETA to eicosapentaenoic acid (EPA); DGLA to ETA; EPA to docosapentaenoic acid (DPA); and ARA to EPA have been introduced into the genome of Yarrowia for synthesis of ARA and EPA.Type: GrantFiled: May 20, 2009Date of Patent: March 19, 2013Assignee: E I du Pont de Nemours and CompanyInventors: Stephen K. Picataggio, Narendra S. Yadav, Quinn Qun Zhu
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Patent number: 8192959Abstract: This invention provides a series of low-copy number plasmids comprising restriction endonuclease recognition sites useful for cloning at least three different genes or operons, each flanked by a terminator sequence, the plasmids containing variants of glucose isomerase promoters for varying levels of protein expression. The materials and methods are useful for genetic engineering in microorganisms, especially where multiple genetic insertions are sought.Type: GrantFiled: April 22, 2003Date of Patent: June 5, 2012Assignees: Genencor International Inc, E I du Pont de Nemours and CompanyInventors: Mark S. Payne, Stephen K. Picataggio, Amy K. Hsu, Ramesh V. Nair, Fernando Valle, Philippe Soucaille, Donald E. Trimbur
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Patent number: 8168608Abstract: This invention provides a series of low-copy number plasmids comprising restriction endonuclease recognition sites useful for cloning at least three different genes or operons, each flanked by a terminator sequence, the plasmids containing variants of glucose isomerase promoters for varying levels of protein expression. The materials and methods are useful for genetic engineering in microorganisms, especially where multiple genetic insertions are sought.Type: GrantFiled: November 5, 2010Date of Patent: May 1, 2012Assignee: E. I. du Pont de Nemours and CompanyInventors: Mark S. Payne, Stephen K. Picataggio, Amy Kuang-Hsu, Ramesh Velayudhan Nair, Fernando Valle, Philippe Soucaille, Donald Eugene Trimbur
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Patent number: 7932077Abstract: Engineered strains of the oleaginous yeast Yarrowia lipolytica capable of producing greater than 25% eicosapentaenoic acid (EPA, an ?-3 polyunsaturated fatty acid) in the total oil fraction are described. These strains comprise various chimeric genes expressing heterologous desaturases, elongases and acyltransferases and optionally comprise various native desaturase and acyltransferase knockouts to enable synthesis and high accumulation of EPA. Production host cells are claimed, as are methods for producing EPA within said host cells.Type: GrantFiled: November 2, 2005Date of Patent: April 26, 2011Assignee: E. I. du Pont de Nemours and CompanyInventors: Howard Glenn Damude, Peter John Gillies, Daniel Joseph Macool, Stephen K. Picataggio, Dana M. Walters Pollak, James John Ragghianti, Zhixiong Xue, Narendra S. Yadav, Hongxiang Zhang, Quinn Qun Zhu
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Publication number: 20110086919Abstract: Engineered strains of the oleaginous yeast Yarrowia lipolytica capable of producing greater than 25% eicosapentaenoic acid (EPA, an ?-3 polyunsaturated fatty acid) in the total oil fraction are described. These strains comprise various chimeric genes expressing heterologous desaturases, elongases and acyltransferases and optionally comprise various native desaturase and acyltransferase knockouts to enable synthesis and high accumulation of EPA. Production host cells are claimed, as are methods for producing EPA within said host cells.Type: ApplicationFiled: September 29, 2010Publication date: April 14, 2011Applicant: E. I. Du Pont De Nemours and CompanyInventors: Howard Glenn Damude, Peter John Gillies, Daniel Joseph Macool, Stephen K. Picataggio, Dana M. Walters Pollak, James John Ragghianti, Zhixiong Xue, Narendra S. Yadav, Hongxiang Zhang, Quinn Qun Zhu
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Publication number: 20110046014Abstract: This invention provides a series of low-copy number plasmids comprising restriction endonuclease recognition sites useful for cloning at least three different genes or operons, each flanked by a terminator sequence, the plasmids containing variants of glucose isomerase promoters for varying levels of protein expression. The materials and methods are useful for genetic engineering in microorganisms, especially where multiple genetic insertions are sought.Type: ApplicationFiled: November 5, 2010Publication date: February 24, 2011Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: MARK S. PAYNE, Stephen K. Picataggio, Amy Kuang-Hua Hsu, Ramesh V. Nair, Fernando Valle, Philippe Soucaille, Donald E. Trimbur
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Patent number: 7838651Abstract: The present invention relates to fatty acid desaturases and elongases able to catalyze the conversion of linoleic acid (LA) to ?-linolenic acid (GLA); ?-linoleic acid (ALA) to stearidonic acid (STA); GLA to dihomo-?-linoleic acid (DGLA); STA to eicosatetraenoic acid (ETA); DGLA to ETA; eicosapentaenoic acid (EPA) to docosapentaenoic acid (DPA); and arachidonic acid (ARA) to EPA. Nucleic acid sequences encoding codon-optimized desaturases and elongases, nucleic acid sequences which hybridize thereto, DNA constructs comprising the codon-optimized desaturase or elongases, and recombinant host microorganisms expressing increased levels of desaturase or elongase are described.Type: GrantFiled: January 23, 2008Date of Patent: November 23, 2010Assignee: E.I. du Pont de Nemours and CompanyInventors: Stephen K. Picataggio, Quinn Qun Zhu
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Publication number: 20100022647Abstract: Engineered strains of the oleaginous yeast Yarrowia lipolytica capable of producing greater than 10% arachidonic acid (ARA, an ?-6 polyunsaturated fatty acid) in the total oil fraction are described. These strains comprise various chimeric genes expressing heterologous desaturases, elongases and acyltransferases, and optionally comprise various native desaturase and acyltransferase knockouts to enable synthesis and high accumulation of ARA. Production host cells are claimed, as are methods for producing ARA within said host cells.Type: ApplicationFiled: July 30, 2009Publication date: January 28, 2010Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: Howard Glenn Damude, Peter John Gillies, Daniel Joseph Macool, Stephen K. Picataggio, Dana M. Walters Pollak, James John Ragghianti, Zhixiong Xue, Narendra S. Yadav, Hongxiang Zhang, Quinn Qun Zhu
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Publication number: 20090311380Abstract: An engineered strain of the oleaginous yeast Yarrowia lipolytica capable of producing greater than 5.6% docosahexaenoic acid acid (DHA, an w-3 polyunsaturated fatty acid) in the total oil fraction is described. This strain comprises various chimeric genes expressing heterologous desaturases, elongases and acyltransferases and optionally comprises various native desaturase and acyltransferase knockouts to enable synthesis and high accumulation of DHA. Production host cells are claimed, as are methods for producing DHA within said host cells.Type: ApplicationFiled: May 14, 2009Publication date: December 17, 2009Applicant: E.I. DU PONT DE NEMOURS AND COMPANYInventors: Howard Glenn Damude, Peter John Gillies, Daniel Joseph Macool, Stephen K. Picataggio, James John Ragghianti, John E. Seip, Zhixiong Xue, Narendra S. Yadav, Hongxiang Zhang, Quinn Qun Zhu
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Publication number: 20090233347Abstract: The present invention relates to methods for the production of ?-3 and/or ?-6 fatty acids in oleaginous yeast. Thus, desaturases and elongases able to catalyze the conversion of linoleic acid (LA) to ?-linolenic acid (GLA); ?-linoleic acid (ALA) to stearidonic acid (STA); GLA to dihomo-?-linoleic acid (DGLA); STA to eicosatetraenoic acid (ETA); DGLA to arachidonic acid (ARA); ETA to eicosapentaenoic acid (EPA); DGLA to ETA; EPA to docosapentaenoic acid (DPA); and ARA to EPA have been introduced into the genome of Yarrowia for synthesis of ARA and EPA.Type: ApplicationFiled: May 20, 2009Publication date: September 17, 2009Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: Stephen K. Picataggio, Narendra S. Yadav, Quinn Qun Zhu
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Publication number: 20090233346Abstract: The present invention relates to methods for the production of ?-3 and/or ?-6 fatty acids in oleaginous yeast. Thus, desaturases and elongases able to catalyze the conversion of linoleic acid (LA) to ?-linolenic acid (GLA); ?-linoleic acid (ALA) to stearidonic acid (STA); GLA to dihomo-?-linoleic acid (DGLA); STA to eicosatetraenoic acid (ETA); DGLA to arachidonic acid (ARA); ETA to eicosapentaenoic acid (EPA); DGLA to ETA; EPA to docosapentaenoic acid (DPA); and ARA to EPA have been introduced into the genome of Yarrowia for synthesis of ARA and EPA.Type: ApplicationFiled: May 20, 2009Publication date: September 17, 2009Applicant: E.I. DU PONT DE NEMOURS AND COMPANYInventors: Stephen K. Picataggio, Narendra S. Yadav, Quinn Qun Zhu
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Patent number: 7588931Abstract: Engineered strains of the oleaginous yeast Yarrowia lipolytica capable of producing greater than 10% arachidonic acid (ARA, an ?-6 polyunsaturated fatty acid) in the total oil fraction are described. These strains comprise various chimeric genes expressing heterologous desaturases, elongases and acyltransferases, and optionally comprise various native desaturase and acyltransferase knockouts to enable synthesis and high accumulation of ARA. Production host cells are claimed, as are methods for producing ARA within said host cells.Type: GrantFiled: November 1, 2005Date of Patent: September 15, 2009Assignee: E. I. du Pont de Nemours and CompanyInventors: Howard Glenn Damude, Peter John Gillies, Daniel Joseph Macool, Stephen K. Picataggio, Dana M. Walters Pollak, James John Ragghianti, Zhixiong Xue, Narendra S. Yadav, Hongxiang Zhang, Quinn Qun Zhu
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Patent number: 7553628Abstract: The present invention relates to methods for the production of ?-3 and/or ?-6 fatty acids in oleaginous yeast. Thus, desaturases and elongases able to catalyze the conversion of linoleic acid (LA) to ?-linolenic acid (GLA); ?-linoleic acid (ALA) to stearidonic acid (STA); GLA to dihomo-?-linoleic acid (DGLA); STA to eicosatetraenoic acid (ETA); DGLA to arachidonic acid (ARA); ETA to eicosapentaenoic acid (EPA); DGLA to ETA; EPA to docosapentaenoic acid (DPA); and ARA to EPA have been introduced into the genome of Yarrowia for synthesis of ARA and EPA.Type: GrantFiled: March 5, 2007Date of Patent: June 30, 2009Assignee: E.I. du Pont de Nemours and CompanyInventors: Stephen K. Picataggio, Narendra S. Yadav, Quinn Qun Zhu