Material properties of evolutionary diverse spider silks described by variation in a single structural parameter

Madurga, Rodrigo, Plaza Baonza, Gustavo Ramón ORCID: https://orcid.org/0000-0002-5555-5498, Blackledge, Todd A, Guinea Tortuero, Gustavo Víctor ORCID: https://orcid.org/0000-0002-4326-3746, Elices Calafat, Manuel and Pérez Rigueiro, José ORCID: https://orcid.org/0000-0001-8298-8398 (2016). Material properties of evolutionary diverse spider silks described by variation in a single structural parameter. "Scientific Reports", v. 6 (n. 18991); pp. 1-8. ISSN 2045-2322. https://doi.org/10.1038/srep18991.

Description

Title: Material properties of evolutionary diverse spider silks described by variation in a single structural parameter
Author/s:
Item Type: Article
Título de Revista/Publicación: Scientific Reports
Date: 12 January 2016
ISSN: 2045-2322
Volume: 6
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

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.

Funding Projects

Type
Code
Acronym
Leader
Title
Government of Spain
MAT2012-38412-C02-01
Unspecified
Unspecified
Desarrollo de biomateriales basados en la seda para aplicaciones en medicina regenerativa e ingeniería de tejidos
Madrid Regional Government
S2011/BMD-2460
Unspecified
Unspecified
Unspecified

More information

Item ID: 39208
DC Identifier: https://oa.upm.es/39208/
OAI Identifier: oai:oa.upm.es:39208
DOI: 10.1038/srep18991
Official URL: http://www.nature.com/articles/srep18991
Deposited by: Memoria Investigacion
Deposited on: 06 May 2017 10:36
Last Modified: 30 Nov 2022 09:00
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