O(6)-Methylguanine-DNA Methyltransferase

DNA Repair Methyltransferase I; DNA Repair Methyltransferase II; Guanine-O(6)-Alkyltransferase; O(6)-Alkylguanine-DNA Alkyltransferase; O(6)-MeG-DNA Methyltransferase; O(6)-Methylguanine DNA Transmethylase
An enzyme that transfers methyl groups from O(6)-methylguanine, and other methylated moieties of DNA, to a cysteine residue in itself, thus repairing alkylated DNA in a single-step reaction. EC 2.1.1.63.