[Endo beta-N-acetylglucosaminidase in human liver].
Endo beta-N-acetylglucosaminidase activity was found in a alpha-L-fucosidase preparation purified from human liver homogenates, using glycopeptides from human parotid glycoprotein as a substrate. An oligosaccharide was purified and after reduction N-acetylglucosaminitol was shown by paper chromatography. Thus, the specificity and the significance of this endoglycosidase in glycoprotein catabolism are discussed.
D000117:Acetylglucosamine / Q000378:metabolism; D000118:Acetylglucosaminidase / Q000302:isolation & purification*; D006023:Glycoproteins / Q000378:metabolism; D006596:Hexosaminidases / Q000302:isolation & purification*; D006601:Hexoses / Q000378:metabolism; D006801:Humans; D008099:Liver / Q000201:enzymology*; D013402:Sugar Alcohols / Q000378:metabolism; D005644:alpha-L-Fucosidase / Q000302:isolation & purification
D006023:Glycoproteins; D006601:Hexoses; D013402:Sugar Alcohols; D006596:Hexosaminidases; D005644:alpha-L-Fucosidase; D000118:Acetylglucosaminidase; D000117:Acetylglucosamine
Mise en évidence d'une activité d'endo bêta-N-acétylglucosaminidase dans le foie humain