benzene + H(+) + NADH + O2 = cis-1,2-dihydrobenzene-1,2-diol + NAD(+) Binds 1 [2Fe-2S] cluster. Binds 1 Fe cation. Aromatic compound metabolism; benzene degradation; catechol from benzene: step 1/2. This dioxygenase system consists of four proteins: the two subunits of the hydroxylase component (BedC1 and BedC2), a ferredoxin (BedB) and a ferredoxin reductase (BedA). Belongs to the bacterial ring-hydroxylating dioxygenase alpha subunit family.