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CST-II's recognition domain for acceptor substrates in α-(2→8)-sialylations
Wenling Li1, Ping Zhang, Amir J Zuccolo
1Department of Chemistry, University of Calgary, Alberta Ingenuity Centre for Carbohydrate Science, Calgary, Canada.
Abstract:
CST-II is a bacterial sialyltransferase known for its ability to perform α-(2→8)-sialylations using GM(3) related trisaccharide substrates. Previously, we probed the enzyme's substrate specificity and developed an efficient synthesis for α-(2→8)-oligosialosides, and we suggested that CST-II could have a very small substrate recognition domain. Here we report our full studies on CST-II's recognition feature for acceptor substrates. The current study further demonstrates the versatility of CST-II in preparing complex oligosaccharides that contain α-(2→8)-oligosialyl moieties.
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