Quantifying the fraction of glycine and alanine in beta-sheet and helical conformations in spider dragline silk using solid-state NMR |
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| Authors: | Holland Gregory P Jenkins Janelle E Creager Melinda S Lewis Randolph V Yarger Jeffery L |
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| Affiliation: | Department of Chemistry and Biochemistry, Arizona State University, Tempe, AZ 85287, USA. greg.holland@asu.edu |
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| Abstract: | Solid-state two-dimensional refocused INADEQUATE MAS NMR experiments resolve distinct helical and beta-sheet conformational environments for both alanine and glycine in Nephila clavipes dragline silk fibers; the fraction of alanine and glycine in beta-sheet structures is determined to be 82% +/- 4% and 28% +/- 5%, respectively. |
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