Journal of Biological Chemistry 1989-01-15

Novel O-linked carbohydrate chains in the cellulase complex (cellulosome) of Clostridium thermocellum. 3-O-Methyl-N-acetylglucosamine as a constituent of a glycoprotein.

G J Gerwig, P de Waard, J P Kamerling, J F Vliegenthart, E Morgenstern, R Lamed, E A Bayer

Index: J. Biol. Chem. 264(2) , 1027-35, (1989)

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Abstract

Alkaline borohydride treatment of the cellulosome of Clostridium thermocellum yielded two major oligosaccharide-alditols, namely D-Galp-beta(1----4)-D-GalOH and (formula; see text) The compounds, isolated via gel permeation chromatography and high performance liquid chromatography, were analyzed by monosaccharide analysis, methylation analysis, gas-liquid chromatography/mass spectrometry, fast atom bombardment/mass spectrometry, and one- and two-dimensional 500-MHz (COSY, HOHAHA, ROESY) 1H NMR spectroscopy. Sodium dodecyl sulfate-polyacrylamide gel electrophoresis combined with blotting technology indicated that the tetrasaccharide is mainly associated with one of the cellulosome subunits.

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