Memorias de investigación
Artículos en revistas:
Material properties of evolutionary diverse spider silks described by variation in a single structural parameter
Año:2016
Áreas de investigación
  • Biomateriales,
  • Propiedades mecanicas,
  • Seda
Datos
Descripción
Spider major ampullate gland silks (MAS) vary greatly in material properties among species but, this variation is shown here to be confined to evolutionary shifts along a single universal performance trajectory. This reveals an underlying design principle that is maintained across large changes in both spider ecology and silk chemistry. Persistence of this design principle becomes apparent after the material properties are defined relative to the true alignment parameter, which describes the orientation and stretching of the protein chains in the silk fiber. Our results show that the mechanical behavior of all Entelegynae major ampullate silk fibers, under any conditions, are described by this single parameter that connects the sequential action of three deformation micromechanisms during stretching: stressing of protein-protein hydrogen bonds, rotation of the ?-nanocrystals and growth of the ordered fraction. Conservation of these traits for over 230 million years is an indication of the optimal design of the material and gives valuable clues for the production of biomimetic counterparts based on major ampullate spider silk.
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
DOI
10.1038/srep18991
Número de revista
6
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  • Creador: Departamento: Ciencia de Materiales