Abstract
This paper reports for the first time the presence of the human Lewisa type determinant in glycoproteins secreted by plant cells. A single glycopeptide was identified in the tryptic hydrolysis of the peroxidase VMPxC1 from Vaccinium myrtillus L. by HPLC/ESI-MS. The oligosaccharide structures were elucidated by ESI-MS-MS and by methylation analysis before and after removal of fucose by mild acid hydrolysis. The major structure determined is of the biantennary plant complex type containing the outer chain motif Lewisa A corresponding fucosyltransferase activity catalyzing the formation of Lewisa type structures in vitro was identified in cellular extracts of the suspension cultures.
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