Molecular Orientation and Two-Component Nature of the Crystalline Fraction of Spider Dragline Silk
@article{Simmons1996MolecularOA, title={Molecular Orientation and Two-Component Nature of the Crystalline Fraction of Spider Dragline Silk}, author={A. H. Simmons and C. Michal and L. Jelinski}, journal={Science}, year={1996}, volume={271}, pages={84 - 87} }
The molecular origin of the exceptional mechanical properties of spider silk is unclear. This paper presents solid-state 2H nuclear magnetic resonance data from unoriented, oriented, and supercontracted fibers, indicating that the crystalline fraction of dragline silk consists of two types of alanine-rich regions, one that is highly oriented and one that is poorly oriented and less densely packed. A new model for the molecular-level structure of individual silk molecules and their arrangement… CONTINUE READING
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