 EBDH is synthesized exclusively in cells grown anaerobically on ethylbenzene and has been identified as a soluble periplasmic protein.As of late 2007, only one structure has been solved for this class of enzymes, with the PDB accession code .EBDH consists of three subunits of 96, 43, and 23 kDa, and contains a molybdenum cofactor and a heme b559 cofactor linked by a linear row of five iron-sulfur clusters.