Phenazine O-methyltransferase PhzM

UniProtKB accession:  A0A172J1V3

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UniProtKB description:  Involved in the biosynthesis of phenazine natural products including myxin, an N(5),N(10)-dioxide phenazine antiobiotic, which has antimicrobial activity. O-methyltransferase, which converts iodinin (1,6-dihydroxyphenazine N(5),N(10)-dioxide) to myxin (1-hydroxy-6-methoxyphenazine N(5),N(10)-dioxide). Catalyzes both monomethoxy and dimethoxy formation of phenazine natural compounds. Acts on a wide variety of substrates, catalyzing O-methylation of phenazines with non-, mono- or di-N-oxide. Highest activity with 1,6-dihydroxyphenazine (DHP) as substrate. Less active with monohydroxy-containing and monohydroxy-monomethoxy-containing phenazines. Least active with non-phenazine substrates, such as 8-hydroxyquinoline and 6-hydroxyquinoline. Is not able to convert 1-hydroxyphenazine to 1-hydroxy-N5-methylphenazine (pyocyanine), hence does not function as an N-methyltransferase.