Abstract: 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.

Abstract: Variant sucrose transporter polypeptides that enable bacterial growth over a wide range of gene expression levels and sucrose concentrations are described.

Abstract: Variant sucrose transporter polypeptides that enable bacterial growth over a wide range of gene expression levels and sucrose concentrations are described.

Abstract: Variant sucrose transporter polypeptides that enable bacterial growth over a wide range of gene expression levels and sucrose concentrations are described. Additionally, recombinant bacteria comprising these variant sucrose transporter polypeptides, and methods of utilizing the bacteria to produce products such as glycerol and glycerol-derived products are provided.

Abstract: Mutant delta-5 desaturases, having the ability to convert dihomo-gamma-linolenic acid [DGLA; 20:3 omega-6] to arachidonic acid [ARA; 20:4 omega-6] and/or eicosatetraenoic acid [ETA; 20:4 omega-3] to eicosapentaenoic acid [EPA; 20:5 omega-3] and possessing at least one mutation within the HPGG (SEQ ID NO:7) motif of the cytochome b5-like domain and at least one mutation within the HDASH (SEQ ID NO:8) motif are disclosed. Isolated nucleic acid fragments and recombinant constructs comprising such fragments encoding delta-5 desaturases, along with a method of making long chain polyunsaturated fatty acids [“PUFAs”], are also disclosed.

Abstract: 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.

Abstract: The present invention relates to mutant ?5 desaturases, which have the ability to convert dihomo-?-linolenic acid [DGLA; 20:3 ?-6] to arachidonic acid [ARA; 20:4 ?-6] and/or eicosatetraenoic acid [ETA; 20:4 ?-3] to eicosapentaenoic acid [EPA; 20:5 ?-3] and which possess at least one mutation within the HPGG motif of the cytochome b5-like domain. Isolated nucleic acid fragments and recombinant constructs comprising such fragments encoding ?5 desaturases, along with a method of making long chain polyunsaturated fatty acids [“PUFAs”] using these mutant ?5 desaturases in oleaginous yeast, are disclosed.

Abstract: Variant sucrose transporter polypeptides that enable bacterial growth over a wide range of gene expression levels and sucrose concentrations are described.

Abstract: 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.

Abstract: The present invention relates to mutant ?5 desaturases, which have the ability to convert dihomo-?-linolenic acid [DGLA; 20:3 ?-6] to arachidonic acid [ARA; 20:4 ?-6] and/or eicosatetraenoic acid [ETA; 20:4 ?-3] to eicosapentaenoic acid [EPA; 20:5 ?-3] and which possess at least one mutation within the HPGG motif of the cytochome b5-like domain. Isolated nucleic acid fragments and recombinant constructs comprising such fragments encoding ?5 desaturases, along with a method of making long chain polyunsaturated fatty acids [“PUFAs”] using these mutant ?5 desaturases in oleaginous yeast, are disclosed.

Abstract: The present invention relates to mutant ?5 desaturases, which have the ability to convert dihomo-?-linolenic acid [DGLA; 20:3 ?-6] to arachidonic acid [ARA; 20:4 ?-6] and/or eicosatetraenoic acid [ETA; 20:4 ?-3] to eicosapentaenoic acid [EPA; 20:5 ?-3] and which possess at least one mutation within the HPGG motif of the cytochome b5-like domain. Isolated nucleic acid fragments and recombinant constructs comprising such fragments encoding ?5 desaturases, along with a method of making long chain polyunsaturated fatty acids [“PUFAs”] using these mutant ?5 desaturases in oleaginous yeast, are disclosed.

Abstract: The present invention relates to mutant ?5 desaturases, which have the ability to convert dihomo-?-linolenic acid [DGLA; 20:3 ?-6] to arachidonic acid [ARA; 20:4 ?-6] and/or eicosatetraenoic acid [ETA; 20:4 ?-3] to eicosapentaenoic acid [EPA; 20:5 ?-3] and which possess at least one mutation within the HPGG motif of the cytochrome b5-like domain. Isolated nucleic acid fragments and recombinant constructs comprising such fragments encoding ?5 desaturases, along with a method of making long chain polyunsaturated fatty acids [“PUFAs”] using these mutant ?5 desaturases in oleaginous yeast, are disclosed.

Abstract: Mutant delta-5 desaturases, having the ability to convert dihomo-gamma-linolenic acid [DGLA; 20:3 omega-6] to arachidonic acid [ARA; 20:4 omega-6] and/or eicosatetraenoic acid [ETA; 20:4 omega-3] to eicosapentaenoic acid [EPA; 20:5 omega-3] and possessing at least one mutation within the HPGG (SEQ ID NO:7) motif of the cytochome b5-like domain and at least one mutation within the HDASH (SEQ ID NO:8) motif are disclosed. Isolated nucleic acid fragments and recombinant constructs comprising such fragments encoding delta-5 desaturases, along with a method of making long chain polyunsaturated fatty acids [“PUFAs”], are also disclosed.

Abstract: 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.

Abstract: 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.

Abstract: The present invention relates to a ?5 desaturase, which has the ability to convert dihomo-?-linolenic acid (DGLA; 20:3 ?-6) to arachidonic acid (ARA; 20:4 ?-6) and/or eicosatetraenoic acid (ETA; 20:4 ?-3) to eicosapentaenoic acid (EPA; 20:5 ?-3). Isolated nucleic acid fragments and recombinant constructs comprising such fragments encoding ?5 desaturase along with a method of making long chain polyunsaturated fatty acids (PUFAs) using this ?5 desaturase in oleaginous yeast are disclosed.

Abstract: The present invention relates to mutant ?5 desaturases, which have the ability to convert dihomo-?-linolenic acid [DGLA; 20:3 ?-6] to arachidonic acid [ARA; 20:4 ?-6] and/or eicosatetraenoic acid [ETA; 20:4 ?-3] to eicosapentaenoic acid [EPA; 20:5 ?-3] and which possess at least one mutation within the HPGG motif of the cytochrome b5-like domain. Isolated nucleic acid fragments and recombinant constructs comprising such fragments encoding ?5 desaturases, along with a method of making long chain polyunsaturated fatty acids [“PUFAs”] using these mutant ?5 desaturases in oleaginous yeast, are disclosed.

Abstract: The present invention relates to a ?5 desaturase, which has the ability to convert dihomo-?-linolenic acid (DGLA; 20:3 ?-6) to arachidonic acid (ARA; 20:4 ?-6) and/or eicosatetraenoic acid (ETA; 20:4 ?-3) to eicosapentaenoic acid (EPA; 20:5 ?-3). Isolated nucleic acid fragments and recombinant constructs comprising such fragments encoding ?5 desaturase along with a method of making long chain polyunsaturated fatty acids (PUFAs) using this ?5 desaturase in oleaginous yeast are disclosed.

Abstract: 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.

Abstract: 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.