Oxidoreductases;
Acting on paired donors, with incorporation or reduction of molecular oxygen;
With reduced iron-sulfur protein as one donor, and incorporation of one atom of oxygen into the other donor
The enzyme, found in members of the Sphingobium genus, initiates the degradation of N,N-dimethyl-phenylurea herbicides by mono-N-demethylation. The catalytic unit contains a Rieske [2Fe-2S] iron-sulfur cluster, and catalyses the monooxygenation of a methyl group. The resulting N-methoxyl group is unstable and decomposes spontaneously to form formaldehyde. The enzyme associates with additional proteins (a reductase and a [3Fe-4S] type ferredoxin) that are involved in the transfer of electrons from NAD(P)H to the active site.
