US Patent 7094563 Isolation and composition of novel glycosidases

Substantially pure glycosidases capable for cleaving selected glycosidic bonds have been described including glycosidases isolated from Xanthomonas and recombinant glycosidases. Substrate specificity of isolated enzymes have been identified for GlcNacβ1-x, Galα1-3R, Galα1-6R, Galβ1-3R, Fucα-2R, Fucα1-3R, Fucα1-4R, Manα1-2R, Manα1-3R, Manα1-6R, Manβ1-4R, Xylβ1-2R, Glcβ1-4R, and Galβ1-4R providing improved capability for selectively cleaving a glycosidic linkage in a carbohydrate substrate and for forming modified carbohydrates.