Dimethylsulfoxide
Reductase
Dimethylsulfoxide reductase is a molybdenum-containing enzyme that catalyzes the conversion of dimethyl sulfoniopropionate (DMSP), produced by marine algae as an osmotic stabilizer and methylating agent, to dimethyl sulfide (DMS) (Figure 20.6). DMS is subsequently oxidized to dimethylsulfoxide (DMSO). Dimethylsulfoxide reductase contains two molecules of bound molybdopterin covalently linked to a serine residue in the enzyme.