Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Material properties of evolutionary diverse spider silks described by variation in a single structural parameter
Year:2016
Research Areas
  • Biomaterials,
  • Mechanical properties,
  • Silk
Information
Abstract
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.
International
Si
JCR
Si
Title
Scientific Reports
ISBN
2045-2322
Impact factor JCR
5,078
Impact info
Datos JCR del año 2013
Volume
10.1038/srep18991
Journal number
6
From page
-
To page
-
Month
ENERO
Ranking
Participants
  • Autor: Rodrigo Madurga Lacalle (UPM)
  • Autor: Gustavo Ramon Plaza Baonza (UPM)
  • Autor: Todd A. Blackledge
  • Autor: Gustavo Victor Guinea Tortuero (UPM)
  • Autor: Manuel Elices Calafat (UPM)
  • Autor: Jose Perez Rigueiro (UPM)
Research Group, Departaments and Institutes related
  • Creador: Departamento: Ciencia de Materiales
S2i 2019 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)