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  • Title: Isolation and physicochemical properties of human chorionic gonadotropin of hydatidiform mole.
    Author: Imamura S.
    Journal: Nihon Sanka Fujinka Gakkai Zasshi; 1980 Oct; 32(10):1631-6. PubMed ID: 7240828.
    Abstract:
    HCG of chorionic tissues of hydatidiform mole was purified using ammonium sulfate fractionation, ion exchange chromatography and gel filtration. The purified hCG has a molecular weight of 1.5x10(5). Three subunits of molecular weights 11,000, 17,000 and 31,000 were obtained after treatment with sodium dodecyl sulfate and beta-mercaptoethanol. Amino acid analysis indicates a high content of Asp. and Glu., but a low content of Pro. Carbohydrate content is only 15.2%, and the amount of amino sugars and sialic acid are also comparatively low. The biologic activity of the purified hCG's of chorionic tissues is much lower than that from urine.
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