Cuticular proteins: The neglected component

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Abstract
This paper emphasizes the importance of the protein component of cuticles. Correlation of electrophoretic charge distribution of individual cuticular proteins and physical properties of the cuticles from which they were extracted, as well as interpopulation and interspecies conservation of electrophoretic patterns, are used to argue that individual proteins play precise roles in the cuticle. Glycosylation of cuticular proteins is described, but no function for these modifications is yet known. Analogy is drawn to analyses of chorion proteins and the case is made that analysis of amino acid sequence data is likely to provide insights into how cuticular proteins and chitin interact to construct the diverse types of cuticles.

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