| Literature DB >> 19945695 |
Crystal Sigulinsky1, Ponnusamy Babu, Xylophone V Victor, Balagurunathan Kuberan.
Abstract
We report the preparation of size-defined [(15)N]N-acetylheparosan oligosaccharides from Escherichia coli-derived (15)N-enriched N-acetylheparosan. Optimized growth conditions of E. coli in minimal media containing (15)NH(4)Cl yielded [(15)N]N-acetylheparosan on a preparative scale. Depolymerization of [(15)N]N-acetylheparosan by heparitinase I yielded resolvable, even-numbered oligosaccharides ranging from disaccharide to icosaccharide. Anion-exchange chromatography-assisted fractionation afforded size-defined [(15)N]N-acetylheparosan oligosaccharides identifiable by ESI-TOFMS. These isotopically labeled oligosaccharides will prove to be valuable research tools for the chemoenzymatic synthesis of heparin and heparan sulfate oligosaccharides and for the study of their structural biology. 2009 Elsevier Ltd. All rights reserved.Entities:
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Year: 2009 PMID: 19945695 PMCID: PMC2812664 DOI: 10.1016/j.carres.2009.10.024
Source DB: PubMed Journal: Carbohydr Res ISSN: 0008-6215 Impact factor: 2.104