Structural Studies

Structure of Acidic O-Specific Polysaccharide from the Marine Bacterium Cellulophaga baltica

S. V. Tomshich1, N. A. Komandrova1, G. Widmalm2, O. I. Nedashkovskaya1, A. S. Shashkov3 and A. V. Perepelov2,3#

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1Pacific Institute of Bioorganic Chemistry, Far East Division, Russian Academy of Sciences, prosp. Stoletiya Vladivostoka 159, Vladivostok, 690041, Russia;
2Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, S-106 91 Stockholm, Sweden;
3Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninskii pr. 47, Moscow, 119991, Russia

Received: March 2, 2006; in final form: March 29, 2006

Abstract. The structure of an acidic O-specific polysaccharide from the marine bacterium Cellulophaga baltica was established by chemical methods and NMR spectroscopy. The polysaccharide was shown to consist of repeating tetrasaccharide units containing two mannose residues, one N-acetyl-D-glucosamine residue, and one D-glucuronic acid residue. An O-acetyl group was also found in the polysaccharide in nonstoichiometric amount. The polysaccharide had the following structure:

Key words: Cellulophaga baltica, marine bacteria, O-specific polysaccharide, structure, NMR spectroscopy

Russian Journal of Bioorganic Chemistry 2007, 33 (1): 83-87