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4. α-Fucosidases with different substrate specificities from two species of Fusarium

Author

Paper, Janet M., Scott-Craig, John S., Cavalier, David, Faik, Ahmed, Wiemels, Richard E., Borrusch, Melissa S., Bongers, Mareike, and Walton, Jonathan D.

Subjects
food and beverages
Abstract

Two fungal-secreted α-fucosidases and their genes were characterized. FoFCO1 was purified from culture filtrates of Fusarium oxysporum strain 0685 grown on L-fucose and its encoding gene identified in the sequenced genome of strain 4287. FoFCO1 was active on p-nitrophenyl- α-fucoside (pNP-Fuc), but did not defucosylate a nonasaccharide (XXFG) fragment of pea xyloglucan. A putative α-fucosidase gene (FgFCO1) from Fusarium graminearum was expressed in Pichia pastoris. FgFCO1 was ∼1,800 times less active on pNP-Fuc than FoFCO1, but was able to defucosylate the XXFG nonasaccharide. Although FgFCO1 and FoFCO1 both belong to Glycosyl Hydrolase family 29, they share

Published
2012

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