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PEDS Advance Access published online on January 11, 2007
Protein Engineering Design and Selection, doi:10.1093/protein/gzl050
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© The Author 2007. Published by Oxford University Press. All rights reserved. For Permissions, please e-mail: journals.permissions@oxfordjournals.org

Design and facile production of recombinant resilin-like polypeptides: gene construction and a rapid protein purification method

Russell E. Lyons1,4, Emmanuelle Lesieur1, Misook Kim1, Darren C.C. Wong1, Mickey G. Huson2, Kate M. Nairn3, Alan G. Brownlee1, Roger D. Pearson1, Christopher M. Elvin1 and Ashutosh Chilkoti

1 CSIRO Livestock Industries, Queensland Bioscience Precinct, St Lucia, QLD 4072, Australia 2 CSIRO Textiles and Fibre Technology, Geelong, Victoria 3216, Australia 3 CSIRO Manufacturing and Infrastructure Technology, Clayton, Victoria 3168, Australia

4 To whom correspondence should be addressed. E-mail: Russell.Lyons{at}csiro.au

Resilin is an elastic protein found in specialized regions of the cuticle of insects, which displays unique resilience and fatigue lifetime properties. As is the case with many elastomeric proteins, including elastin, gliadin and spider silks, resilin contains distinct repetitive domains that appear to confer elastic properties to the protein. Recent work within our laboratory has demonstrated that cloning and expression of exon 1 of the Drosophila melanogaster CG15920 gene, encoding a putative resilin-like protein, results in a recombinant protein that can be photochemically crosslinked to form a highly resilient, elastic biomaterial (Rec1 resilin). The current study describes a recursive cloning strategy for generating synthetic genes encoding multiple copies of consensus polypeptides, based on the repetitive domains within resilin-like genes from D. melanogaster and Anopheles gambiae. A simple non-chromatographic purification method that can be applied to these synthetic proteins and Rec1 is also reported. These methods for the design and purification of resilin-like periodic polypeptides will facilitate the future investigation of structural and functional properties of resilin, and the development of novel highly resilient biomaterials.

Keywords: expression/purification/repetitive polypeptides/resilin/synthetic genes

Received April 6, 2006; revised November 15, 2006; accepted November 20, 2006.


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