This protein seems to be a 2Fe-2S ferredoxin. Xenobiotic degradation; toluene degradation. This dioxygenase system consists of four proteins: the two subunits of the hydroxylase component (todC1 and todC2), a ferredoxin (todB) and a ferredoxin reductase (todA). Belongs to the bacterial ring-hydroxylating dioxygenase ferredoxin component family.