ID 1.14.13.243 DE toluene 2-monooxygenase. AN toluene ortho-monooxygenase. CA (1) toluene + NADH + O2 + H(+) = 2-hydroxytoluene + NAD(+) + H2O. CA (2) 2-hydroxytoluene + NADH + O2 + H(+) = 3-methylcatechol + NAD(+) + CA H2O. CC -!- The enzyme, characterized from the bacterium Burkholderia cepacia, CC belongs to a class of nonheme, oxygen-dependent diiron enzymes. CC -!- It contains a hydroxylase component with two binuclear iron centers, CC an NADH-oxidoreductase component containing FAD and a [2Fe-2S] iron- CC sulfur cluster, and a third component involved in electron transfer CC between the hydroxylase and the reductase. CC -!- The enzyme dihydroxylates its substrate in two sequential CC hydroxylations, initially forming 2-methylphenol, which is CC hydroxylated to 3-methylcatechol. //