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Descripción
The extraordinary mechanical performance of spider dragline silk is explained by its highly ordered microstructure and results from the sequences of its constituent proteins. This optimized microstructural organization simultaneously achieves high tensile strength and strain at breaking by taking advantage of weak molecular interactions. However, elucidating how the original design evolved over the 400 million year history of spider silk, and identifying the basic relationships between microstructural details and performance have proven difficult tasks. Here we show that the analysis of maximum supercontracted single spider silk fibers using X ray diffraction shows a complex picture of silk evolution where some key microstructural features are conserved phylogenetically while others show substantial variation even among closely related species. This new understanding helps elucidate which microstructural features need to be copied in order to produce the next generation of biomimetic silk fibers.
Internacional	Si
JCR del ISI	Si
Título de la revista	Scientific Reports
ISSN	2045-2322
Factor de impacto JCR	5,078
Información de impacto	Datos JCR del año 2013
Volumen	5
DOI	10.1038/srep14820
Número de revista
Desde la página	-
Hasta la página	-
Mes	OCTUBRE
Ranking

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• Creador: Departamento: Ciencia de Materiales