alexa The asparagine-linked sugar chains of human follicle-stimulating hormone.
Bioinformatics & Systems Biology

Bioinformatics & Systems Biology

Journal of Glycomics & Lipidomics

Author(s): Renwick AG, Mizuochi T, Kochibe N, Kobata A

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Abstract The asparagine-linked sugar chains of human follicle-stimulating hormone (hFSH) were liberated as radioactive oligosaccharides from the polypeptide moiety by hydrazinolysis followed by N-acetylation and NaB3H4 reduction. Ninety-five percent of the oligosaccharides were acidic and all were converted to a mixture of neutral oligosaccharides on sialidase treatment. The mixture of neutral oligosaccharides was subjected to sequential immobilized lectin column chromatography on E-PHA-agarose, AAL-Sepharose, and Con A-Sepharose, and six fractions were obtained. The results of sequential exoglycosidase digestion of each oligosaccharide and methylation analysis led us to propose that the asparagine-linked sugar chains of hFSH are a mixture of complex-type bi-, tri-, and tetraantennary sialylated sugar chains with and without a fucose residue linked at the C-6 position of the proximal N-acetylglucosamine. Some of these sugar chains contain bisecting N-acetylglucosamine residue.
This article was published in J Biochem and referenced in Journal of Glycomics & Lipidomics

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