Related Experiment Videos
Structural studies on phosphorylated oligosaccharides derived from yeast mannan by 1H(31P) relayed spin-echo
P de Waard1, J F Vliegenthart, Y Kozutsumi
1Department of Bio-organic Chemistry, Utrecht University, The Netherlands.
The Journal of Biological Chemistry
|July 25, 1989
Summary
Researchers analyzed yeast mannan oligosaccharides using 1H NMR and Relayed Spin-Echo Difference Spectroscopy (RESED). RESED successfully identified phosphate attachment sites on phosphorylated yeast mannan structures.
Area of Science:
- Carbohydrate Chemistry
- Analytical Chemistry
- Biochemistry
Background:
- Yeast mannan is a complex polysaccharide with potential biological roles.
- Understanding the structure of phosphorylated oligosaccharides is crucial for elucidating their function.
Purpose of the Study:
- To characterize phosphorylated and nonphosphorylated tri- and tetrasaccharides from yeast mannan.
- To determine the attachment position of phosphate groups in these oligosaccharides.
- To evaluate the utility of Relayed Spin-Echo Difference Spectroscopy (RESED) for analyzing phosphorylated oligosaccharides.
Main Methods:
- Isolation and purification of oligosaccharides from yeast mannan.
- Analysis using 500-MHz 1H Nuclear Magnetic Resonance (NMR) spectroscopy.
- Application of Relayed Spin-Echo Difference Spectroscopy (RESED) to identify phosphorylated residues.
Main Results:
- The structures of two phosphorylated compounds were determined.
- RESED spectroscopy enabled the differentiation of subspectra for phosphorylated residues.
- The attachment position of the phosphate group was successfully established using RESED.
Conclusions:
- RESED is a valuable technique for analyzing low quantities of phosphorylated oligosaccharides.
- The study provides structural insights into phosphorylated yeast mannan components.
- This methodology can be applied to similar complex carbohydrate structures.