THE ASN-LINKED CARBOHYDRATE CHAINS OF HUMAN TAMM-HORSFALL GLYCOPROTEIN OF ONE MALE - NOVEL SULFATED AND NOVEL N-ACETYLGALACTOSAMINE-CONTAINING N-LINKED CARBOHYDRATE CHAINS

K HARD, G VAN ZADELHOFF, P MOONEN, Hans Kamerling, J Vliegenthart, Guus van Zadelhoff

    Research output: Contribution to journalArticleAcademicpeer-review

    Abstract

    Human Tamm-Horsfall glycoprotein has been purified from the urine of one male. The Asn-linked carbohydrate chains were enzymically released by peptide-N4-(N-acetyl-beta-glucosaminyl)asparagine amidase F, and separated from the remaining protein by gel-permeation chromatography on Bio-Gel P-100. Fractionation of the intact (sulfated) sialylated carbohydrate chains was achieved by a combination of three liquid-chromatographic techniques, namely, anion-exchange FPLC on Q-Sepharose, amine-adsorption HPLC on Lichrospher-NH2, and high-pH anion-exchange chromatography on CarboPac PA1. In total, more than 150 carbohydrate-containing fractions were obtained, some of which still contained mixtures of oligosaccharides. The primary structure of 30 N-glycans, including 10 novel oligosaccharides, were determined by one- and two-dimensional H-1-NMR spectroscopy at 500 MHz or 600 MHz. The types of compounds identified range from non-fucosylated, monosialylated, diantennary to fucosylated, tetrasialylated, tetraantennary carbohydrate chains, possessing the following terminal structural elements:

    [GRAPHICS]

    The largest GalNAc-containing compound has the following structure:(~)[GRAPHICS]

    Original languageEnglish
    Pages (from-to)895-915
    Number of pages21
    JournalEuropean Journal of Biochemistry
    Volume209
    Issue number3
    Publication statusPublished - 1 Nov 1992

    Keywords

    • PEPTIDE-N4-(N-ACETYL-BETA-GLUCOSAMINYL)ASPARAGINE AMIDASE-F
    • HAMSTER OVARY CELLS
    • STRUCTURAL-ANALYSIS
    • SIALIC-ACID
    • H-1-NMR SPECTROSCOPY
    • URINARY GLYCOPROTEIN
    • NMR-SPECTROSCOPY
    • OLIGOSACCHARIDES
    • IDENTIFICATION
    • UROMODULIN

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