Characterization and partial purification of beta-N-acetylgalactosaminyltransferase from urine of Sd(a+) individuals.

Abstract

Urine from Sd(a+) individuals was found to contain a beta-N-acetylgalactosaminyltransferase that transfers N-acetylgalactosamine (GalNAc) from UDP-GalNAc to 3'-sialyllactose and glycoproteins carrying the terminal NeuAc alpha-3Gal beta group. This enzyme has been purified 174-fold by affinity chromatography on Blue Sepharose and DEAE-Sephacel chromatography… (More)

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