Letter | Published:

Isolation of a Cystine Derivative from Silk

Nature volume 192, pages 11851186 (23 December 1961) | Download Citation



CONSIDERABLE doubt exists as to whether silk fibroin (Bombyx mori) contains a small amount of cystine or whether this amino-acid is entirely absent. Apart from any biological significance, even a very small quantity of cystine, depending on its mode of incorporation, could have a considerable influence on the molecular weight of fibroin.

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  1. Department of Textile Industries, Institute of Technology, Bradford.

    • C. EARLAND
    •  & D. J. RAVEN


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