Abstract
Evidence from X-ray diffraction, laser-Raman spectroscopy, secondary structure prediction, freeze-fracturing, conventional electron microscopy and Fourier analysis suggests that the helicoidal structure of the silkmoth eggshell (chorion) is created by protein molecules, most probably in a twisted β-pleated sheet conformation. It is proposed that this conformation also dictates the formation of the helicoidal architecture of other proteinaceous eggshells; apparently, it may also play an important role in the formation of the helicoidal architecture in other biological systems with protein components.
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More From: International Journal of Biological Macromolecules
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