Persistence and variation in microstructural design during the evolution of spider silk

Madurga, Rodrigo and Blackledge, Todd A and Perea, B. and Plaza Baonza, Gustavo Ramón and Riekel, Christian and Burghammer, Manfred and Elices, Margarita L. and Guinea Tortuero, Gustavo V. and Pérez Rigueiro, José (2015). Persistence and variation in microstructural design during the evolution of spider silk. "Scientific Reports", v. 5 (n. 14820); pp. 1-11. ISSN 2045-2322. https://doi.org/10.1038/srep14820.

Description

Title: Persistence and variation in microstructural design during the evolution of spider silk
Author/s:
  • Madurga, Rodrigo
  • Blackledge, Todd A
  • Perea, B.
  • Plaza Baonza, Gustavo Ramón
  • Riekel, Christian
  • Burghammer, Manfred
  • Elices, Margarita L.
  • Guinea Tortuero, Gustavo V.
  • Pérez Rigueiro, José
Item Type: Article
Título de Revista/Publicación: Scientific Reports
Date: 6 October 2015
ISSN: 2045-2322
Volume: 5
Subjects:
Faculty: Centro de Tecnología Biomédica (CTB) (UPM)
Department: Ciencia de los Materiales
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

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.

Funding Projects

TypeCodeAcronymLeaderTitle
Government of Spainproject MAT2012-38412-C02-01UnspecifiedUnspecifiedUnspecified
Madrid Regional GovernmentGrant S2011/BMD-2460UnspecifiedUnspecifiedUnspecified

More information

Item ID: 38208
DC Identifier: http://oa.upm.es/38208/
OAI Identifier: oai:oa.upm.es:38208
DOI: 10.1038/srep14820
Official URL: http://www.nature.com/articles/srep14820
Deposited by: Memoria Investigacion
Deposited on: 22 Apr 2017 08:18
Last Modified: 22 Apr 2017 08:18
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