The MopB_Phenylacetyl-CoA-OR CD contains the phenylacetyl-CoA:acceptor oxidoreductase, large subunit (PadB2), and other related proteins. The phenylacetyl-CoA:acceptor oxidoreductase has been characterized as a membrane-bound molybdenum-iron-sulfur enzyme involved in anaerobic metabolism of phenylalanine in the denitrifying bacterium Thauera aromatica. Members of this CD belong to the molybdopterin_binding (MopB) superfamily of proteins.