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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Belcourt, Pascal J. F. Hodgson, Derek J. Sauvé, Simon Brochu, Denis Gilbert, Michel Aubin, Yves Ghasriani, Houman |
| Description | Author Affiliation: Ghasriani H ( Centre for Vaccine Evaluation, Biologics and Genetic Therapies Directorate, Health Canada, Ottawa, Ontario K1A 0K9, Canada.) |
| Abstract | Enzymatic addition of GalNAc to isotopically labeled IFN 2a produced in Escherichia coli yielded the O-linked glycoprotein GalNAc -[(13)C,(15)N]IFN 2a. The three-dimensional structure of GalNAc -IFN 2a has been determined in solution by NMR spectroscopy at high resolution. Proton-nitrogen heteronuclear Overhauser enhancement measurements revealed that the addition of a single monosaccharide unit at Thr-106 significantly slowed motions of the glycosylation loop on the nanosecond time scale. Subsequent addition of a Gal unit produced Gal(ß1,3)GalNAc -[(13)C,(15)N]IFN 2a. This extension resulted in a further decrease in the dynamics of this loop. The methodology used here allowed the first such description of the structure and dynamics of an O-glycoprotein and opens the way to the study of this class of proteins. |
| ISSN | 00219258 |
| e-ISSN | 1083351X |
| Journal | Journal of Biological Chemistry |
| Issue Number | 1 |
| Volume Number | 288 |
| Language | English |
| Publisher | American Society for Biochemistry and Molecular Biology (United States) |
| Publisher Date | 2013-01-04 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Acetylgalactosamine Chemistry Interferon-alpha Metabolism Polysaccharides Threonine Genetics Computational Biology Disulfides Escherichia Coli Glycoproteins Glycosylation Interferons Magnetic Resonance Spectroscopy Models, Molecular Molecular Conformation Peptides Protein Conformation Recombinant Proteins Research Support, Non-U.S. Gov't Biochemistry Molecular Biology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Cell Biology Biochemistry Molecular Biology |
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