Studies of Oligosaccharides. XII. Hydrophilization of Glycyrrhetinic Acid by Coupling to Gentio Oligosaccharides
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Structural studies on -carrageenan derived oligosaccharides
Oligosaccharides were prepared through mild hydrochloric acid hydrolysis of -carrageenan from Kappaphycus striatum carrageenan. Three oligosaccharides were purified by strong-anion exchange high-performance chromatography. Their structure was elucidated using mass spectral and NMR data. Negative-ion electrospray ionization (ESI) mass spectra at different fragmentor voltages provided the molecul...
متن کاملMass spectrometry of oligosaccharides.
Glycosylation is a common post-translational modification to cell surface and extracellular matrix (ECM) proteins as well as to lipids. As a result, cells carry a dense coat of carbohydrates on their surfaces that mediates a wide variety of cell-cell and cell-matrix interactions that are crucial to development and function. Because of the historical difficulties with the analysis of complex car...
متن کاملUtilization of Cellulose Oligosaccharides by Cellvibrio Gilvus.
Schafer, Marion L. (Virginia Polytechnic Institute, Blacksburg), and Kendall W. King. Utilization of cellulose oligosaccharides by Cellvibrio gilvus. J. Bacteriol. 89:113-116. 1965.-The hypothesis that oligosaccharides of the cellulose polymer series can be absorbed by cellulolytic bacteria, prior to hydrolysis to the level of glucose or cellobiose, has been tested. Resting-cell suspensions of ...
متن کاملCytosolic-free oligosaccharides are predominantly generated by the degradation of dolichol-linked oligosaccharides in mammalian cells.
During asparagine (N)-linked protein glycosylation, eukaryotic cells generate considerable amounts of free oligosaccharides (fOSs) in the cytosol. It is generally assumed that such fOSs are produced by the deglycosylation of misfolded N-glycoproteins that are destined for proteasomal degradation or as the result of the degradation of dolichol-linked oligosaccharides (DLOs), which serve as glyca...
متن کاملEnzymatic synthesis of oligosaccharides
The biological interest of oligosaccharides is growing very rapidly, and necessitates the development of efficient synthesis reactions. The stereoand regio-selectivity of enzyme catalysis is a key advantage in this field, as a complementary tool to the chemical approach. Two types of enzymes can be applied to the obtention of oligosaccharides: Hydrolytic enzymes, which can catalyze either rever...
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ژورنال
عنوان ژورنال: Chemical and Pharmaceutical Bulletin
سال: 1974
ISSN: 0009-2363,1347-5223
DOI: 10.1248/cpb.22.1618