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  • Title: Characterization of human salivary beta-N-acetyl-D-glucosaminidase (NAGase).
    Author: Fouda NE, Söder PO, Olsson ML.
    Journal: Scand J Dent Res; 1988 Jun; 96(3):275-8. PubMed ID: 3164911.
    Abstract:
    NAGase activity was studied in mixed whole, parotid, and submandibular saliva. The maximum activity of NAGase was found to be at pH 5.0. NAGase activity varied considerably among the subjects. The data indicated that a large portion of NAGase activity originates from oral microorganisms. NAGase activity was greatly reduced after heating for 45 min at 50 degrees C. The residual activity after storage at -20 degrees C was higher than the original activity. The enzyme activity was markedly diminished after the addition of Sn++ and Ag+ ions, while no activity was detected after the addition of Hg+ ion.
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