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  • Title: Patterns of action of glucoamylase isozymes from Aspergillus species on glycogen.
    Author: Gasdorf HJ, Atthasampunna P, Dan V, Hensley DE, Smiley KL.
    Journal: Carbohydr Res; 1975 Jun; 42(1):147-56. PubMed ID: 237628.
    Abstract:
    Glucoamylase isozymes from black Aspergillus species have been freed of all traces of alpha-amylase by chromatography on Bio-Gel P-100, as evidenced by limited hydrolysis of oxidized amylose. Glucoamylase I retains its ability to hydrolyze rabbit-liver glycogen rapidly. By contrast, glucoamylase II hydrolyzes glycogen slowly, and addition of alpha-amylase to glucoamylase II does not enhance its activity toward glycogen. These results indicate that alpha-amylase is not involved in hydrolysis of glycogen by glucoamylase.
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