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Science. 2007 Dec 21;318(5858):1900-3.

Role of intermolecular forces in defining material properties of protein nanofibrils.

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  • 1Nanoscience Centre, University of Cambridge, J. J. Thomson Avenue, Cambridge CB3 0FF, UK.

Abstract

Protein molecules have the ability to form a rich variety of natural and artificial structures and materials. We show that amyloid fibrils, ordered supramolecular nanostructures that are self-assembled from a wide range of polypeptide molecules, have rigidities varying over four orders of magnitude, and constitute a class of high-performance biomaterials. We elucidate the molecular origin of fibril material properties and show that the major contribution to their rigidity stems from a generic interbackbone hydrogen-bonding network that is modulated by variable side-chain interactions.

PMID:
18096801
[PubMed - indexed for MEDLINE]
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