O-6-methylguanine-DNA methyltransferase (MGMT) is an enzyme that repairs O-6-methylguanine, a mutagenic DNA base damaged by endogenous and environmental alkylating agents and is involved in the cellular defense against the biological effects of O-6-methylguanine in DNA. MGMT repairs alkylated guanine in DNA by stoichiometrically transferring the alkyl group at the O-6 position to a cysteine residue in the enzyme. There are few reports that abnormal MGMT expression correlates with the prognosis in human solid cancers. Recombinant MGMT, fused to His-tag at N-terminus, was expressed in E.coli and was purified by conventional chromatography techniques. Synonyms: O-6-methylguanine-DNA methyltransferase, MGMT, EC 2.1.1.63, O-6-methylguanine-DNA-alkyltransferase, O-6-methylguanine-DNA methyltransferase 6 O methylguanine DNA methyltransferase, Agat, AGT, AI267024, MGC107020, Methylated DNA protein cysteine methyltransferase, Methylguanine DNA methyltransferase, O 6 methylguanine DNA alkyltransferase. NCBI no.: NP_002403
分子量
23.8 kDa (227 aa), confirmed by MALDI-TOF. (Molecular weight on SDS-PAGE will appear higher)