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Nature’s Dendrimer: Characterizing Amylopectin as a Multivalent Host


  • We thank Dr. Sebastian Meier and Dr. Michael Pittelkow for helpful discussions. We acknowledge the Danish Instrument Center for NMR Spectroscopy of Biological Macromolecules at the Carlsberg Laboratory, where the 800 MHz spectra were recorded.


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Hang on to those branches! Amylopectin, the major polysaccharide of starch, is a predominantly α(1,4)-linked glucan whose properties are defined by its size and the number, distribution, and length of its α(1,6)-linked branches. The amphiphilic probe HPTS-C16H33 binds to terminal helical branches longer than 12 glucose units (green), which allows for a detailed quantitative characterization of polysaccharide branching by 1H NMR spectroscopy.

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