The enzyme which is used as an anticancer drug -: (A) L-asparginase, (B) Cytosine arabinoside, (C) Methotrexate, (D) Vincristine
Answer is A. Ans. is 'a' i.e., L-asparginase o Leukemia cells are deficient in L-Asparagine synthase and depend on the supply of L-asparagine from medium. The enzyme L-asparaginase degrades L-asparagine to L-aspaic acid, depriving leukemic cells of essential metabolite-may cause cell death.