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Int J Biol Macromol. 1999 Mar-Apr;24(2-3):211-7.

Spider (Araneus diadematus) cocoon silk: a case of non-periodic lattice crystals with a twist?

Author information

1
University of Oxford, Department of Materials, UK.

Abstract

Transmission electron microscopy was used to investigate the supramolecular structure of Araneus diadematus (garden spider) cocoon silk. Electron diffraction patterns contain features which are consistent with the presence of non-periodic lattice crystals, i.e. highly frustrated crystalline regions as identified previously in the major ampullate silk (MAS, dragline) of Nephila clavipes spiders. The diffraction patterns further suggest that crystals in A. diadematus cocoon silk may be twisted parallel to the chain direction, offering a potential explanation for the lower tensile stiffness of this fibre relative to MAS.

PMID:
10342767
DOI:
10.1016/s0141-8130(99)00007-0
[Indexed for MEDLINE]

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