Reaktivität von Aminosäure-Seitenkettengruppen, II. N-Acetyl-methylamide von Threonin und Hydroxyprolin
作者:HELMUT ZAHN、GERHARD REINERT
DOI:10.1515/bchm2.1968.349.1.608
日期:1968.1
Ammonium<i>N</i>-acetyl-<scp>L</scp>-threoninate and methylammonium<i>N</i>-acetyl-<scp>L</scp>-threoninate
作者:Raffaella Puliti、Carlo Andrea Mattia
DOI:10.1107/s0108270100001268
日期:2000.4.15
Serine versus Threonine Glycosylation: The Methyl Group Causes a Drastic Alteration on the Carbohydrate Orientation and on the Surrounding Water Shell
作者:Francisco Corzana、Jesús H. Busto、Gonzalo Jiménez-Osés、Marisa García de Luis、Juan L. Asensio、Jesús Jiménez-Barbero、Jesús M. Peregrina、Alberto Avenoza
DOI:10.1021/ja072181b
日期:2007.8.1
Different behavior has been observed for the psi 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 alpha-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).