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  • Title: Nectrisine is a potent inhibitor of alpha-glucosidases, demonstrating activities similarly at enzyme and cellular levels.
    Author: Tsujii E, Muroi M, Shiragami N, Takatsuki A.
    Journal: Biochem Biophys Res Commun; 1996 Mar 18; 220(2):459-66. PubMed ID: 8645327.
    Abstract:
    Nectrisine, discovered as an immunomodulator, was found to inhibit alpha-glucosidase, alpha- and beta-mannosidases, beta-glucosidase and beta-N-acetylglucosaminidase, in that order of inhibition strength. Beta-Galactosidase, alpha-fucosidase, and neuraminidase were insensitive to this antibiotic. Also sensitive was the trimming glucosidase I which participates in the first step of modifying N-glycosidic oligosaccharide. Nectrisine demonstrated an inhibitory effect at the cellular level as strong as expected based on its action at enzyme levels; castanospermine and 1-deoxynojirimycin did not. Nectrisine and castanospermine suppressed syncytium formation and hemolytic activity in Newcastle disease virus (NDV)-infected BHK cells, without blocking the synthesis and cell-surface expression of HANA glycoprotein of NDV.
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