Abstract
WHEN sheep wool is heated with β-naphthol at a temperature of 140–150°, it dissolves; and when after cooling the β-naphthol is removed with ether, an amorphous yellowish substance is obtained in a yield of about 80 per cent of the weight of the wool. This product is readily hydrolysed by a glycerol extract of pancreatin, purified pancreatic proteinase (free of peptidases and protaminase), pepsin, and taka-diastase. Yeast polypeptidase does not affect the product but causes additional hydrolysis after a prior treatment of the product with pepsin.
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cf."Annual Review of Biochemistry", 9, 47 (1940).
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LICHTENSTEIN, N. Cleavability of Keratins Treated with Hot β-Naphthol by Proteinases. Nature 152, 249 (1943). https://doi.org/10.1038/152249b0
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DOI: https://doi.org/10.1038/152249b0
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