HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Meikle, P. Articles by Yellowlees, D. Search for Related Content PubMed PubMed Citation Articles by Meikle, P. Articles by Yellowlees, D. Social Bookmarking                      What's this?

J. Biol. Chem., Vol. 262, Issue 35, 16941-16947, Dec, 1987

Structural determination of the oligosaccharide side chains from a glycoprotein isolated from the mucus of the coral Acropora formosa

P Meikle, GN Richards and D Yellowlees
Department of Chemistry and Biochemistry, James Cook University of North Queensland, Townsville, Australia.

An extracellular mucous glycoprotein has been isolated from the hard coral Acropora formosa. The glycoprotein contains sulfated oligosaccharide side chains attached through O-glycosidic linkages to serine and threonine, the principal amino acids (77%) in the polypeptide. The oligosaccharide side chains consist of D-arabinose, D- mannose, and N-acetyl-D-glucosamine with smaller amounts of D- galactose, L-fucose, and N-acetyl-D-galactosamine, but no sialic or uronic acids. Alkaline borohydride reductive cleavage resulted in a mixture of oligosaccharide alditols. Six oligosaccharides were purified by high performance liquid chromatography. The structures of these oligosaccharides, which do not resemble those of any other glycoprotein so far examined, were determined by a combination of gas chromatography/mass spectrometry analysis of methylation products and NMR spectroscopy. All oligosaccharides contain a reducing terminal mannitol residue with N-acetylglucosamine linked to carbon 2, 4, or 6 of the mannitol. There is no evidence for linkage of N- acetylglucosamine to any other glycoses in the glycoprotein. Galactose was detected in two oligosaccharides linked to the 4-position of mannitol. Arabinose (Ara) was found in only one oligosaccharide. This was probably due to hydrolysis of the labile arabino-furanoside linkages. Evidence is presented which indicates the arabinose occurs primarily at the terminal position of oligosaccharide side chains. The structures of the oligosaccharides isolated from the glycoprotein were: (Formula: see text).
CiteULike    Complore    Connotea    Del.icio.us    Digg    Reddit    Technorati    What's this?

This article has been cited by other articles:

				P. L. Clode and A. T. Marshall Low temperature X-ray microanalysis of calcium in a scleractinian coral: evidence of active transport mechanisms J. Exp. Biol., November 15, 2002; 205(22): 3543 - 3552. [Abstract] [Full Text] [PDF]