Elongase genes and uses thereof
First Claim
1. An isolated nucleic acid selected from the group consisting of:
- (a) a nucleic acid comprising the polynucleotide of SEQ ID NO;
5 and (5) a nucleic acid completely complementary to the polynucleotide of (a).
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Abstract
The subject invention relates to the identification of several genes involved in the elongation of polyunsaturated acids (i.e., “elongases”) and to uses thereof. At least two of these genes are also involved in the elongation of monounsaturated fatty acids. In particular, elongase is utilized in the conversion of gamma linolenic acid (GLA) to dihomogama linolenic acid (DGLA) and in the conversion of DGLA or 20:4n-3 to eicosapentaenoic acid (EPA). DGLA may be utilized in the production of polyunsaturated fatty acids, such as arachiodonic acid (AA), docosahexaenoic acid (DHA), EPA, adrenic acid, ω6-docosapentaenoic acid or ω3-docosapentaenoic acid which may be added to pharmaceutical compositions, nutritional compositions, animal feeds, as well as other products such as cosmetics.
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Citations
24 Claims
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1. An isolated nucleic acid selected from the group consisting of:
- (a) a nucleic acid comprising the polynucleotide of SEQ ID NO;
5 and (5) a nucleic acid completely complementary to the polynucleotide of (a). - View Dependent Claims (2, 3, 4)
- (a) a nucleic acid comprising the polynucleotide of SEQ ID NO;
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5. A method of producing an elongase enzyme comprising the steps of:
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a) isolating a polynucleotide comprising the nucleotide sequence of SEQ ID NO;
5 or SEQ ID NO;
6;
b) constructing a vector comprising said polynucleotide of step (a) operably linked to a promoter; and
c) introducing said vector into a host cell for a time and under conditions sufficient for expression of said elongase enzyme. - View Dependent Claims (6, 7, 8, 9, 10, 11)
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- 12. A vector comprising a polynucleotide operably linked to a promoter, wherein said polynucleotide comprises the nucleotide sequence of SEQ ID NO:
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22. An isolated nucleic acid selected from the group consisting of:
- (a) a nucleic acid comprising the polynucleotide of SEQ ID NO;
6 and (b) a nucleic acid completely complementary to the polynucleotide of (a).
- (a) a nucleic acid comprising the polynucleotide of SEQ ID NO;
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23. An isolated polynucleotide encoding a polypeptide, wherein said polypeptide has elongase activity and comprises an amino acid sequence which is at least 95% identical to the amino acid sequence set forth in SEQ ID NO:
- 63.
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24. An isolated polynucleotide encoding a polypeptide, wherein said polypeptide has elongase activity and comprises an amino acid sequence which is at least 95% identical to the amino acid sequence set forth in SEQ ID NO:
- 64.
Specification