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Journal of Lipid Research, Vol 28, 446-449, Copyright © 1987 by Lipid Research, Inc.

ARTICLES

Glucosylsterol and acylglucosylsterol of snake epidermis: structure determination

W Abraham, PW Wertz, RR Burken and DT Downing

The structures of two classes of glycolipids, acylglucosylsterol and glucosylsterol, from snake epidermis have been determined by chemical, spectroscopic, and gas-liquid chromatographic methods. The acylglucosylsterol consists of a glucose molecule attached to cholesterol and an ester-linked fatty acid on carbon 6 of the sugar. The major ester-linked fatty acids are palmitic, stearic, and oleic. The glucosylsterol consists of glucose attached to cholesterol. These unusual glycolipids may play a role in epidermal barrier function in snakes and it is concluded that these sterol glycosides may remain in the reptiles as a vestige of a more primitive barrier-forming mechanism.
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