ERIC Number: EJ921612
Record Type: Journal
Publication Date: 2011-Jan
Pages: 3
Abstractor: As Provided
ISBN: N/A
ISSN: ISSN-0021-9584
EISSN: N/A
Available Date: N/A
Kinetics of Neuraminidase Action on Glycoproteins by One- and Two-Dimensional NMR
Barb, Adam W.; Glushka, John N.; Prestegard, James H.
Journal of Chemical Education, v88 n1 p95-97 Jan 2011
The surfaces of mammalian cells are coated with complex carbohydrates, many terminated with a negatively charged "N"-acetylneuraminic acid residue. This motif is specifically targeted by pathogens, including influenza viruses and many pathogenic bacteria, to gain entry into the cell. A necessary step in the influenza virus life cycle is the release of viral particles from the cell surface; this is achieved by cleaving "N"-acetylneuraminic acid from cell surface glycans with a virally produced neuraminidase. We present a laboratory exercise to model this process using a glycoprotein as a glycan carrier and using real-time nuclear magnetic resonance spectroscopy to monitor "N"-acetylneuraminic acid release as catalyzed by neuraminidase. A time-resolved two-dimensional data-processing technique, statistical total correlation spectroscopy, enhances the resolution of the complicated one-dimensional glycoprotein spectrum and isolates characteristic peaks corresponding to substrates and products. This exercise is relatively straightforward and leads students through a wide range of biologically and chemically relevant procedures, including use of NMR spectroscopy, enzymology, and data-processing techniques. (Contains 5 figures.)
Descriptors: Spectroscopy, Science Instruction, Molecular Structure, Science Laboratories, Chemistry, Diseases, Science Experiments, College Science, Undergraduate Study
Division of Chemical Education, Inc and ACS Publications Division of the American Chemical Society. 1155 Sixteenth Street NW, Washington, DC 20036. Tel: 800-227-5558; Tel: 202-872-4600; e-mail: eic@jce.acs.org; Web site: http://pubs.acs.org/jchemeduc
Publication Type: Journal Articles; Reports - Descriptive
Education Level: Higher Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A
Author Affiliations: N/A