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 language | English |
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Pages (from-to) | 895-915 |
Number of pages | 21 |
Journal | European Journal of Biochemistry |
Volume | 209 |
Issue number | 3 |
Publication status | Published - 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