CoB-CoM heterodisulfide reductase

In enzymology, a CoB---CoM heterodisulfide reductase is an enzyme that catalyzes the chemical reaction


 * coenzyme B + coenzyme M + methanophenazine $$\rightleftharpoons$$ N-{7-[(2-sulfoethyl)dithio]heptanoyl}-O3-phospho-L-threonine + dihydromethanophenazine

The 3 substrates of this enzyme are coenzyme B, coenzyme M, and methanophenazine, whereas its two products are N-{7-[(2-sulfoethyl)dithio]heptanoyl}-O3-phospho-L-threonine and dihydromethanophenazine.

This enzyme belongs to the family of oxidoreductases, specifically those acting on a sulfur group of donors with other, known, acceptors. The systematic name of this enzyme class is coenzyme B:coenzyme M:methanophenazine oxidoreductase. Other names in common use include heterodisulfide reductase, and soluble heterodisulfide reductase. This enzyme participates in folate biosynthesis.