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  • Title: Isolation of two endo-beta-N-acetylglucosaminidases from fig latex.
    Author: Li SC, Asakawa M, Hirabayashi Y, Li Y.
    Journal: Biochim Biophys Acta; 1981 Aug 13; 660(2):278-83. PubMed ID: 6793075.
    Abstract:
    Two endo-beta-N-acetylglucosaminidases (mannosyl-glycoprotein 1,4-N-acetamidodeoxy-beta-D-glycohydrolase, EC 3.2.1.96) (type F-I and type F-II) have been isolated from fig latex. At pH 7.0, type F-1 was retained by the DEAE-Sephadex A-50 column, whereas type F-II was not adsorbed by the column. The optimum pH of type F-I was found to be pH 5.9 and type F-II, pH 5.4. Type F-I enzyme hydrolyzes the tri-mannosyl derivatives di-N-acetylglucosaminylasparagine faster than the penta- or hexa-mannosyl compounds. Type F-II hydrolyzes the penta- and hexa-mannosyl derivatives, but not the tri-mannosyl compound.
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