Abstract: Provided is ?3 desaturase having high enzymatic activity even at normal temperature. A polypeptide which consists of an amino acid sequence having an identity of 80% or more with the amino acid sequence represented by SEQ ID NO: 2 and has ?3 desaturation activity on C20 fatty acid, and a gene thereof.

Abstract: The present invention aims to provide a promoter showing high expression activity in microorganisms belonging to the genus Mortierella. The present invention provides a polynucleotide which contains any one nucleotide sequence selected from the group consisting of SEQ ID NO: 1 to 28, or a variant thereof.

Abstract: The present invention aims to provide a promoter showing high expression activity in microorganisms belonging to the genus Mortierella. The present invention provides a polynucleotide which contains any one nucleotide sequence selected from the group consisting of SEQ ID NOs: 1 to 28, or a variant thereof.

Abstract: The present invention aims to provide a promoter showing high expression activity in microorganisms belonging to the genus Mortierella. The present invention provides a polynucleotide which contains any one nucleotide sequence selected from the group consisting of SEQ ID NOs: 1 to 28, or a variant thereof.

Abstract: The present invention aims to provide a promoter showing high expression activity in microorganisms belonging to the genus Mortierella. The present invention provides a polynucleotide which contains any one nucleotide sequence selected from the group consisting of SEQ ID NOs: 1 to 28, or a variant thereof.

Abstract: Provided is ?3 desaturase having high enzymatic activity even at normal temperature. A polypeptide which consists of an amino acid sequence having an identity of 80% or more with the amino acid sequence represented by SEQ ID NO: 2 and has ?3 desaturation activity on C20 fatty acid, and a gene thereof.

Abstract: The present invention aims to provide a promoter showing high expression activity in microorganisms belonging to the genus Mortierella. The present invention provides a polynucleotide which contains a nucleotide sequence selected from SEQ ID NOs: 1 to 28, or a variant thereof, as well as a non-human transformant containing such a polynucleotide.

Abstract: Provided is an ?3 desaturase having a high enzymatic activity even at normal temperature. A polypeptide consisting of an amino acid sequence having an identity of 80% or more with the amino acid sequence represented by SEQ ID NO: 2 and having ?3 desaturation activity, and a gene therefor.

Abstract: The present invention aims to provide a promoter showing high expression activity in microorganisms belonging to the genus Mortierella. The present invention provides a polynucleotide which contains any one nucleotide sequence selected from the group consisting of SEQ ID NOs: 1 to 28, or a variant thereof.

Abstract: The present invention provides a novel acetyl-CoA carboxylase. The object of the present invention is attained by the nucleotide sequence of SEQ ID NO: 1 and the amino acid sequence of SEQ ID NO: 2 of the present invention.

Abstract: The present invention provides a novel acetyl-CoA carboxylase. The object of the present invention is attained by the nucleotide sequence of SEQ ID NO: 1 and the amino acid sequence of SEQ ID NO: 2 of the present invention.

Abstract: The present invention provides a polypeptide having a wide substrate specificity and having a ?3 fatty acid desaturation activity, which makes efficiently unsaturated bond at ?3 position, and a polynucleotide coding for the same. By expressing the polypeptide in the organism, mass production of n-3 series PUFAs is enabled. Specifically, the polypeptide having a ?3 fatty acid desaturation activity and consisting of the amino acid sequence represented by SEQ ID NO: 1, a polynucleotide coding for a polypeptide having a ?3 fatty acid desaturation activity that consists of the base sequence represented by SEQ ID NO: 2 or SEQ ID NO: 3, and the like is useful for production of n-3 series fatty acids.

Abstract: In a process for the production of diacylglycerol-containing fat/oil where the ratio of diacylglycerol to the total neutral lipid is more than 20% by weight and a polyunsaturated fatty acid is a constituting fatty acid, a process which is characterized in that a microbe being able to produce said fat/oil is incubated and, if desired, said fat/oil is collected.

Abstract: The invention provides a process, for producing fats or oils in which the rate of triglycerides constituted by the same polyunsaturated fatty acids linking to the three hydroxyl groups of glycerol is 20% or more by weight for the total triglycerides, which comprises culturing a microorganism capable of producing said fats or oils and if required recovering said fats or oils; fats or oils produced by this process; and a process for producing said fats or oils.

Abstract: A method of breeding a lipid-producing strain belonging to the genus Mortierella. According to the method of breeding a lipid-producing strain which involves an expression-inhibiting step of inhibiting the expression of a specific gene in the lipid-producing strain as described above, a lipid-producing strain belonging to the genus Mortierella can be efficiently and effectively bred.

Abstract: The present invention provides a polypeptide having a wide substrate specificity and having a ?3 fatty acid desaturation activity, which makes efficiently unsaturated bond at ?3 position, and a polynucleotide coding for the same. By expressing the polypeptide in the organism, mass production of n-3 series PUFAs is enabled. Specifically, the polypeptide having a ?3 fatty acid desaturation activity and consisting of the amino acid sequence represented by SEQ ID NO: 1, a polynucleotide coding for a polypeptide having a ?3 fatty acid desaturation activity that consists of the base sequence represented by SEQ ID NO: 2 or SEQ ID NO: 3, and the like is useful for production of n-3 series fatty acids.