Nucleic acids encoding sialyltransferases from C. jejuni
AssigneeNational Research Council of Canada
InventorsMichel Gilbert, Warren W. Wakarchuk
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Abstract
This invention provides prokaryotic glycosyltransferases, including a bifunctional sialyltransferase that has both an α2,3- and an α2,8-activity. A β1,4-GalNAc transferase and a β1,3-galactosyltransferase are also provided by the invention, as are other glycosyltransferases and enzymes involved in synthesis of lipooligosaccharide (LOS). The glycosyltransferases can be obtained from, for example, Campylobacter species, including C. jejuni. In additional embodiments, the invention provides nucleic acids that encode the glycosyltransferases, as well as expression vectors and host cells for expressing the glycosyltransferases.
Claims8
1-42. (Cancelled)
An isolated or recombinant nucleic acid molecule that comprises a sialyltransferase polynucleotide sequence that encodes a sialyltransferase polypeptide, wherein the sialyltransferase polypeptide has α-2,3-sialyltransferase activity, and wherein the sialyltransferase nucleotide sequence is amplified by PCR using a first primer comprising SEQ ID NO:46 and a second primer comprising SEQ ID NO:47.
Dependencies are inferred from the claim text.