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Biomimetic polymers of plant cutin: an approach from molecular modeling

  • Miguel A. San-Miguel
  • Jaime Oviedo
  • Jose Alejandro Heredia-Guerrero
  • Antonio Heredia
  • Jose Jesus Benitez
Original Paper
Part of the following topical collections:
  1. Topical Collection QUITEL 2013

Abstract

Biomimetics of materials is based on adopting and reproducing a model in nature with a well-defined functionality optimized through evolution. An example is barrier polymers that protect living tissues from the environment. The protecting layer of fruits, leaves, and non-lignified stems is the plant cuticle. The cuticle is a complex system in which the cutin is the main component. Cutin is a biopolyester made of polyhydroxylated carboxylic acids of 16 and 18 carbon atoms. The biosynthesis of cutin in plants is not well understood yet, but a direct chemical route involving the self-assembly of either molecules or molecular aggregates has been proposed. In this work, we present a combined study using experimental and simulation techniques on self-assembled layers of monomers selectively functionalized with hydroxyl groups. Our results demonstrate that the number and position of the hydroxyl groups are critical for the interaction between single molecules and the further rearrangement. Also, the presence of lateral hydroxyl groups reinforces lateral interactions and favors the bi-dimensional growth (2D), while terminal hydroxyl groups facilitate the formation of a second layer caused by head–tail interactions. The balance of 2D/3D growth is fundamental for the plant to create a protecting layer both large enough in 2D and thick enough in 3D.

Keywords

Cutin Biopolyesters Atomic force microscopy Molecular dynamics simulations 

Notes

Acknowledgments

Funding for this work was provided by the Spanish Ministerio de Economía y Competitividad under project CTQ2011-24299 and by Junta de Andalucía grant TEP-7418 under the Motriz Program.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • Miguel A. San-Miguel
    • 1
  • Jaime Oviedo
    • 1
  • Jose Alejandro Heredia-Guerrero
    • 2
  • Antonio Heredia
    • 3
  • Jose Jesus Benitez
    • 2
  1. 1.Departamento de Química FísicaUniversidad de SevillaSevillaSpain
  2. 2.Instituto de Ciencia de Materiales de Sevilla (ICMS), CSIC-US, Consejo Superior de Investigaciones Científicas (CSIC)SevillaSpain
  3. 3.Departamento de Biología Molecular y Bioquímica, IHSM La Mayora UMA-CSICUniversidad de MálagaMálagaSpain

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