Serine versus Threonine Glycosylation: The Methyl Group Causes a Drastic Alteration on the Carbohydrate Orientation and on the Surrounding Water Shell
- Corzana, F. 2
- Busto, J.H. 2
- Jiménez-Osés, G. 2
- De Luis, M.G. 2
- Asensio, J.L. 3
- Jiménez-Barbero, J. 1
- Peregrina, J.M. 2
- Avenoza, A. 2
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1
Centro de Investigaciones Biológicas
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2
Universidad de La Rioja
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3
Instituto de Química Orgánica General
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ISSN: 0002-7863
Any de publicació: 2007
Volum: 129
Número: 30
Pàgines: 9458-9467
Tipus: Article
Altres publicacions en: Journal of the American Chemical Society
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Resum
Different behavior has been observed for the ψ torsion angle of the glycosidic linkages of D-GalNAc-Ser and D-GalNAc-Thr motifs, allowing the carbohydrate moiety to adopt a completely different orientation. In addition, the fact that the water pockets found in α-D-GalNAc-Thr differ from those obtained for its serine analogue could be related to the different capability that the two model glycopeptides have to structure the surrounding water. This fact could have important biological inferences (i.e., antifreeze activity). © 2007 American Chemical Society.