Gel entrapped L-asparaginase: kinetic behavior and antitumor activity.


L-Asparaginase from Escherichia coli was immobilized by entrapment in a gel based on poly(2-hydroxyethyl methacrylate) with an activity as high as 730 I.U./g of dry gel. The apparent Michaelis constant for these gels was similar to that of the free enzyme. At 37 degrees C the immobilized enzyme had a half-life of more than 40 days, in vitro. The gel was… (More)


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