<prompt> Mechanism of action of Temozolomide is :Alkylation of DNAInhibition of topoisomeraseMicrotubule inhibitionProteasome inhibition  <response>: Temozolomide is an alkylating agent . It is the drug of choice for brain tumors.Other alkylating agents are: If: Ifosfamide Bus: Busulfan Not: Nitrosoureas Present: Procarbazine Take: Temozolamide My: Mephalan, Mechlorethamaide Cycle: CyclophosphamideTopoisomerase inhibitor is Etoposide.Microtubule inhibitors are Vincristin, Vinblastin.Proteosome inhibitors are Boezomib. 